Top Activity and Monitored SQL Executions
Hi,
We have some issues with our batch jobs and I bumped into an issue I've seen before.
I can see in Top Activity that there is a job running in my database and I can see the SQL through Top Activity page in GC. When I try to monitor the SQL "live" with Monitored SQL Executions I can't see any executions at all in the database.
If I go to the session browser in TOAD I can see the process (SID) as active and I can see the current statment (the same as in Top Activity)
So to summarize:
Why can't I see the SQL in Monitored SQL Executions?
Btw We run Oracle 11.2.0.2
Regards
Morten
Please log an SR provide SQL Monitor Active Report for your SQL. Thanks.
-Mughees
Similar Messages
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OEM 11g - Monitored SQL Executions, click SQL ID, shows blank screen??
I am trying to investigate my execution plans against my DB; and was informed i can check current status of SQL scripts using:
Performance tab > SQL Monitoring > Monitored SQL Executions
I click on SQL ID i want to investigate and comes back with blank screen instead of the overview tab.
See Oracle URL below for screenshot
Figure 6-8 Monitored SQL Execution Details Page
http://download.oracle.com/docs/cd/E11857_01/em.111/e11982/database_management.htm
Kind Regards,
PaulPlease log an SR provide SQL Monitor Active Report for your SQL. Thanks.
-Mughees -
SQL execution error, ORA-01843: not a valid month
Im using ASP/VBScript and its my first time starting to use Oracle as a DB provider.
Just having an issue with a statement that I have.
Heres my statement:
SELECT T592_NOON.SHIP_CODE, T592_NOON.REPORT_DATE, T592_NOON.L_B, T592_NOON.AVERAGE_SPEED, T592_NOON.SEASTATE, T592_NOON.DISTANCE, T592_NOON.WIND_DIRECTION, T592_NOON.IFO_MAIN, T592_NOON.IFO_BOILER, T592_NOON.IFO_AUXENGINE FROM T592_NOON WHERE (((SHIP_CODE)='S271') AND (REPORT_DATE BETWEEN to_date('08/02/2004 13:00:00', 'DD-MON-YYYY HH24:MI') and to_date('28/02/2004 18:15:00', 'DD-MON-YYYY HH24:MI')))
Whenever I run it it errors and returns:
SQL execution error, ORA-01843: not a valid month
Can anyone tell why this wouldnt work?
REPORT_DATE type is DATE
REPORT_DATE Sample data: 2003-04-28-12.00.00.000000Changing the format of the date seemed to fix it.
Incorrect: '08/02/2004 13:00:00'
Correct: '08-FEB-2004 13:00' -
This SQL statement always in Top Activity, with PX Deq Credit: send blkd
Hi gurus,
The following SQL statement is always among the Top Activity. I can see the details in Enerprise manager that it suffers from PX Deq Credit: send blkd
This is the statement:
SELECT S.Product, S.WH_CODE, S.RACK, S.BATCH, S.EXP_DATE, FLOOR(Qty_Beg) QtyBeg_B,
ROUND(f_convert_qty(S.PRODUCT, Qty_Beg-FLOOR(Qty_Beg), P.UOM_K ), 0) QtyBeg_K,
FLOOR(Qty_In) QtyIn_B, ROUND(f_convert_qty(S.PRODUCT, Qty_In-FLOOR(Qty_In), P.UOM_K), 0) QtyIn_K,
FLOOR(Qty_Out) QtyOut_B, ROUND(f_convert_qty(S.PRODUCT, Qty_Out-FLOOR(Qty_Out), P.UOM_K ), 0) QtyOut_K,
FLOOR(Qty_Adj) QtyAdj_B, ROUND(f_convert_qty(S.PRODUCT, Qty_Adj-FLOOR(Qty_Adj), P.UOM_K ), 0) QtyAdj_K,
FLOOR(Qty_End) QtyEnd_B, ROUND(f_convert_qty(S.PRODUCT, Qty_End-FLOOR(Qty_End), P.UOM_K ), 0) QtyEnd_K,
S.LOC_CODE
FROM V_STOCK_DETAIL S
JOIN PRODUCTS P ON P.PRODUCT = S.PRODUCT
WHERE S.Product = :pProduct AND S.WH_CODE = :pWhCode AND S.LOC_CODE = :pLocCode;The statement is invoked by our front end (web based app) for a browse table displayed on a web page. The result can be 10 to 8000. It is used to display the current stock availability for a particular product in a particular warehouse. The stock availability it self is kept in a View : V_Stock_Detail
These are the parameters relevant to the optimizer:
SQL> show parameter user_dump_dest
user_dump_dest string /u01/app/oracle/admin/ITTDB/udump
SQL> show parameter optimizer
_optimizer_cost_based_transformation string OFF
optimizer_dynamic_sampling integer 2
optimizer_features_enable string 10.2.0.3
optimizer_index_caching integer 0
optimizer_index_cost_adj integer 100
optimizer_mode string ALL_ROWS
optimizer_secure_view_merging boolean TRUE
SQL> show parameter db_file_multi
db_file_multiblock_read_count integer 16
SQL> show parameter db_block_size column sname format a20 column pname format a20
db_block_size integer 8192Here is the output of EXPLAIN PLAN:
SQL> explain plan for
SELECT S.Product, S.WH_CODE, S.RACK, S.BATCH, S.EXP_DATE, FLOOR(Qty_Beg) QtyBeg_B,
ROUND(f_convert_qty(S.PRODUCT, Qty_Beg-FLOOR(Qty_Beg), P.UOM_K ), 0) QtyBeg_K,
FLOOR(Qty_In) QtyIn_B, ROUND(f_convert_qty(S.PRODUCT, Qty_In-FLOOR(Qty_In), P.UOM_K), 0) QtyIn_K,
FLOOR(Qty_Out) QtyOut_B, ROUND(f_convert_qty(S.PRODUCT, Qty_Out-FLOOR(Qty_Out), P.UOM_K ), 0) QtyOut_K,
FLOOR(Qty_Adj) QtyAdj_B, ROUND(f_convert_qty(S.PRODUCT, Qty_Adj-FLOOR(Qty_Adj), P.UOM_K ), 0) QtyAdj_K,
FLOOR(Qty_End) QtyEnd_B, ROUND(f_convert_qty(S.PRODUCT, Qty_End-FLOOR(Qty_End), P.UOM_K ), 0) QtyEnd_K,
S.LOC_CODE
FROM V_STOCK_DETAIL S
JOIN PRODUCTS P ON P.PRODUCT = S.PRODUCT
WHERE S.Product = :pProduct AND S.WH_CODE = :pWhCode AND S.LOC_CODE = :pLocCode
Explain complete.
Elapsed: 00:00:00:31
SQL> select * from table(dbms_xplan.display)
PLAN_TABLE_OUTPUT
Plan hash value: 3252950027
| Id | Operation | Name | Rows | Bytes | Cost (%CPU)| Time | TQ |IN-OUT| PQ
Distrib |
| 0 | SELECT STATEMENT | | 1 | 169 | 6 (17)| 00:00:01 | | |
|
| 1 | PX COORDINATOR | | | | | | | |
|
| 2 | PX SEND QC (RANDOM) | :TQ10003 | 1 | 169 | 6 (17)| 00:00:01 | Q1,03 | P->S | QC
(RAND) |
| 3 | HASH GROUP BY | | 1 | 169 | 6 (17)| 00:00:01 | Q1,03 | PCWP |
|
| 4 | PX RECEIVE | | 1 | 169 | 6 (17)| 00:00:01 | Q1,03 | PCWP |
|
| 5 | PX SEND HASH | :TQ10002 | 1 | 169 | 6 (17)| 00:00:01 | Q1,02 | P->P | HA
SH |
| 6 | HASH GROUP BY | | 1 | 169 | 6 (17)| 00:00:01 | Q1,02 | PCWP |
|
| 7 | NESTED LOOPS OUTER | | 1 | 169 | 5 (0)| 00:00:01 | Q1,02 | PCWP |
|
| 8 | MERGE JOIN CARTESIAN | | 1 | 119 | 4 (0)| 00:00:01 | Q1,02 | PCWP |
|
| 9 | SORT JOIN | | | | | | Q1,02 | PCWP |
|
| 10 | NESTED LOOPS | | 1 | 49 | 4 (0)| 00:00:01 | Q1,02 | PCWP |
|
| 11 | BUFFER SORT | | | | | | Q1,02 | PCWC |
|
| 12 | PX RECEIVE | | | | | | Q1,02 | PCWP |
|
| 13 | PX SEND BROADCAST | :TQ10000 | | | | | | S->P | BR
OADCAST |
|* 14 | INDEX RANGE SCAN | PRODUCTS_IDX2 | 1 | 25 | 2 (0)| 00:00:01 | | |
|
| 15 | PX BLOCK ITERATOR | | 1 | 24 | 2 (0)| 00:00:01 | Q1,02 | PCWC |
|
|* 16 | MAT_VIEW ACCESS FULL | MV_CONVERT_UOM | 1 | 24 | 2 (0)| 00:00:01 | Q1,02 | PCWP |
|
| 17 | BUFFER SORT | | 1 | 70 | 2 (0)| 00:00:01 | Q1,02 | PCWP |
|
| 18 | BUFFER SORT | | | | | | Q1,02 | PCWC |
|
| 19 | PX RECEIVE | | 1 | 70 | 4 (0)| 00:00:01 | Q1,02 | PCWP |
|
| 20 | PX SEND BROADCAST | :TQ10001 | 1 | 70 | 4 (0)| 00:00:01 | | S->P | BR
OADCAST |
|* 21 | TABLE ACCESS BY INDEX ROWID| STOCK | 1 | 70 | 4 (0)| 00:00:01 | | |
|
|* 22 | INDEX RANGE SCAN | STOCK_PK | 1 | | 2 (0)| 00:00:01 | | |
|
|* 23 | TABLE ACCESS BY INDEX ROWID | MV_TRANS_STOCK | 1 | 50 | 3 (0)| 00:00:01 | Q1,02 | PCWP |
|
|* 24 | INDEX RANGE SCAN | MV_TRANS_STOCK_IDX1 | 1 | | 2 (0)| 00:00:01 | Q1,02 | PCWP |
|
Predicate Information (identified by operation id):
14 - access("P"."PRODUCT"=:PPRODUCT)
16 - filter("CON"."PRODUCT"=:PPRODUCT)
21 - filter("STOCK"."LOC_CODE"=:PLOCCODE)
22 - access("STOCK"."PRODUCT"=:PPRODUCT AND "STOCK"."WH_CODE"=:PWHCODE)
23 - filter("STS"(+)='N')
24 - access("PRODUCT"(+)=:PPRODUCT AND "WH_CODE"(+)=:PWHCODE AND "LOC_CODE"(+)=:PLOCCODE AND "RACK"(+)="STOCK"."RACK" AND
"BATCH"(+)="STOCK"."BATCH" AND "EXP_DATE"(+)="STOCK"."EXP_DATE")
42 rows selected.
Elapsed: 00:00:00:06Here is the output of SQL*Plus AUTOTRACE including the TIMING information:
SQL> SELECT S.Product, S.WH_CODE, S.RACK, S.BATCH, S.EXP_DATE, FLOOR(Qty_Beg) QtyBeg_B,
ROUND(f_convert_qty(S.PRODUCT, Qty_Beg-FLOOR(Qty_Beg), P.UOM_K ), 0) QtyBeg_K,
FLOOR(Qty_In) QtyIn_B, ROUND(f_convert_qty(S.PRODUCT, Qty_In-FLOOR(Qty_In), P.UOM_K), 0) QtyIn_K,
FLOOR(Qty_Out) QtyOut_B, ROUND(f_convert_qty(S.PRODUCT, Qty_Out-FLOOR(Qty_Out), P.UOM_K ), 0) QtyOut_K,
FLOOR(Qty_Adj) QtyAdj_B, ROUND(f_convert_qty(S.PRODUCT, Qty_Adj-FLOOR(Qty_Adj), P.UOM_K ), 0) QtyAdj_K,
FLOOR(Qty_End) QtyEnd_B, ROUND(f_convert_qty(S.PRODUCT, Qty_End-FLOOR(Qty_End), P.UOM_K ), 0) QtyEnd_K,
S.LOC_CODE
FROM V_STOCK_DETAIL S
JOIN PRODUCTS P ON P.PRODUCT = S.PRODUCT
WHERE S.Product = :pProduct AND S.WH_CODE = :pWhCode AND S.LOC_CODE = :pLocCode
Execution Plan
0 SELECT STATEMENT Optimizer Mode=ALL_ROWS 1 169 6
1 0 PX COORDINATOR
2 1 PX SEND QC (RANDOM) SYS.:TQ10003 1 169 6 :Q1003 P->S QC (RANDOM)
3 2 HASH GROUP BY 1 169 6 :Q1003 PCWP
4 3 PX RECEIVE 1 169 6 :Q1003 PCWP
5 4 PX SEND HASH SYS.:TQ10002 1 169 6 :Q1002 P->P HASH
6 5 HASH GROUP BY 1 169 6 :Q1002 PCWP
7 6 NESTED LOOPS OUTER 1 169 5 :Q1002 PCWP
8 7 MERGE JOIN CARTESIAN 1 119 4 :Q1002 PCWP
9 8 SORT JOIN :Q1002 PCWP
10 9 NESTED LOOPS 1 49 4 :Q1002 PCWP
11 10 BUFFER SORT :Q1002 PCWC
12 11 PX RECEIVE :Q1002 PCWP
13 12 PX SEND BROADCAST SYS.:TQ10000 S->P BROADCAST
14 13 INDEX RANGE SCAN ITT_NEW.PRODUCTS_IDX2 1 25 2
15 10 PX BLOCK ITERATOR 1 24 2 :Q1002 PCWC
16 15 MAT_VIEW ACCESS FULL ITT_NEW.MV_CONVERT_UOM 1 24 2 :Q1002 PCWP
17 8 BUFFER SORT 1 70 2 :Q1002 PCWP
18 17 BUFFER SORT :Q1002 PCWC
19 18 PX RECEIVE 1 70 4 :Q1002 PCWP
20 19 PX SEND BROADCAST SYS.:TQ10001 1 70 4 S->P BROADCAST
21 20 TABLE ACCESS BY INDEX ROWID ITT_NEW.STOCK 1 70 4
22 21 INDEX RANGE SCAN ITT_NEW.STOCK_PK 1 2
23 7 TABLE ACCESS BY INDEX ROWID ITT_NEW.MV_TRANS_STOCK 1 50 3 :Q1002 PCWP
24 23 INDEX RANGE SCAN ITT_NEW.MV_TRANS_STOCK_IDX1 1 2 :Q1002 PCWP
Statistics
570 recursive calls
0 physical write total IO requests
0 physical write total multi block requests
0 physical write total bytes
0 physical writes direct temporary tablespace
0 java session heap live size max
0 java session heap object count
0 java session heap object count max
0 java session heap collected count
0 java session heap collected bytes
83 rows processed
Elapsed: 00:00:03:24
SQL> disconnect
Commit complete
Disconnected from Oracle Database 10g Enterprise Edition Release 10.2.0.3.0 - 64bit Production
With the Partitioning, OLAP and Data Mining optionsThe TKPROF output for this statement looks like the following:
TKPROF: Release 10.2.0.3.0 - Production on Thu Apr 23 12:39:29 2009
Copyright (c) 1982, 2005, Oracle. All rights reserved.
Trace file: ittdb_ora_9566_mytrace1.trc
Sort options: default
count = number of times OCI procedure was executed
cpu = cpu time in seconds executing
elapsed = elapsed time in seconds executing
disk = number of physical reads of buffers from disk
query = number of buffers gotten for consistent read
current = number of buffers gotten in current mode (usually for update)
rows = number of rows processed by the fetch or execute call
SELECT S.Product, S.WH_CODE, S.RACK, S.BATCH, S.EXP_DATE, FLOOR(Qty_Beg) QtyBeg_B,
ROUND(f_convert_qty(S.PRODUCT, Qty_Beg-FLOOR(Qty_Beg), P.UOM_K ), 0) QtyBeg_K,
FLOOR(Qty_In) QtyIn_B, ROUND(f_convert_qty(S.PRODUCT, Qty_In-FLOOR(Qty_In), P.UOM_K), 0) QtyIn_K,
FLOOR(Qty_Out) QtyOut_B, ROUND(f_convert_qty(S.PRODUCT, Qty_Out-FLOOR(Qty_Out), P.UOM_K ), 0) QtyOut_K,
FLOOR(Qty_Adj) QtyAdj_B, ROUND(f_convert_qty(S.PRODUCT, Qty_Adj-FLOOR(Qty_Adj), P.UOM_K ), 0) QtyAdj_K,
FLOOR(Qty_End) QtyEnd_B, ROUND(f_convert_qty(S.PRODUCT, Qty_End-FLOOR(Qty_End), P.UOM_K ), 0) QtyEnd_K,
S.LOC_CODE
FROM V_STOCK_DETAIL S
JOIN PRODUCTS P ON P.PRODUCT = S.PRODUCT
WHERE S.Product = :pProduct AND S.WH_CODE = :pWhCode AND S.LOC_CODE = :pLocCode
call count cpu elapsed disk query current rows
Parse 1 0.00 0.00 0 0 0 0
Execute 1 0.04 0.12 0 10 4 0
Fetch 43 0.05 2.02 0 73 0 83
total 45 0.10 2.15 0 83 4 83
Misses in library cache during parse: 1
Misses in library cache during execute: 1
Optimizer mode: ALL_ROWS
Parsing user id: 164
Rows Row Source Operation
83 PX COORDINATOR (cr=83 pr=0 pw=0 time=2086576 us)
0 PX SEND QC (RANDOM) :TQ10003 (cr=0 pr=0 pw=0 time=0 us)
0 HASH GROUP BY (cr=0 pr=0 pw=0 time=0 us)
0 PX RECEIVE (cr=0 pr=0 pw=0 time=0 us)
0 PX SEND HASH :TQ10002 (cr=0 pr=0 pw=0 time=0 us)
0 HASH GROUP BY (cr=0 pr=0 pw=0 time=0 us)
0 NESTED LOOPS OUTER (cr=0 pr=0 pw=0 time=0 us)
0 MERGE JOIN CARTESIAN (cr=0 pr=0 pw=0 time=0 us)
0 SORT JOIN (cr=0 pr=0 pw=0 time=0 us)
0 NESTED LOOPS (cr=0 pr=0 pw=0 time=0 us)
0 BUFFER SORT (cr=0 pr=0 pw=0 time=0 us)
0 PX RECEIVE (cr=0 pr=0 pw=0 time=0 us)
0 PX SEND BROADCAST :TQ10000 (cr=0 pr=0 pw=0 time=0 us)
1 INDEX RANGE SCAN PRODUCTS_IDX2 (cr=2 pr=0 pw=0 time=62 us)(object id 135097)
0 PX BLOCK ITERATOR (cr=0 pr=0 pw=0 time=0 us)
0 MAT_VIEW ACCESS FULL MV_CONVERT_UOM (cr=0 pr=0 pw=0 time=0 us)
0 BUFFER SORT (cr=0 pr=0 pw=0 time=0 us)
0 BUFFER SORT (cr=0 pr=0 pw=0 time=0 us)
0 PX RECEIVE (cr=0 pr=0 pw=0 time=0 us)
0 PX SEND BROADCAST :TQ10001 (cr=0 pr=0 pw=0 time=0 us)
83 TABLE ACCESS BY INDEX ROWID STOCK (cr=78 pr=0 pw=0 time=1635 us)
83 INDEX RANGE SCAN STOCK_PK (cr=4 pr=0 pw=0 time=458 us)(object id 135252)
0 TABLE ACCESS BY INDEX ROWID MV_TRANS_STOCK (cr=0 pr=0 pw=0 time=0 us)
0 INDEX RANGE SCAN MV_TRANS_STOCK_IDX1 (cr=0 pr=0 pw=0 time=0 us)(object id 143537)
Elapsed times include waiting on following events:
Event waited on Times Max. Wait Total Waited
---------------------------------------- Waited ---------- ------------
PX Deq: Join ACK 17 0.00 0.00
PX qref latch 2 0.00 0.00
PX Deq Credit: send blkd 72 1.95 2.00
PX Deq: Parse Reply 26 0.01 0.01
SQL*Net message to client 43 0.00 0.00
PX Deq: Execute Reply 19 0.00 0.01
SQL*Net message from client 43 0.00 0.04
PX Deq: Signal ACK 12 0.00 0.00
enq: PS - contention 1 0.00 0.00
********************************************************************************The DBMS_XPLAN.DISPLAY_CURSOR output:
SQL> select * from table(dbms_xplan.display_cursor(null, null, 'ALLSTATS LAST'))
PLAN_TABLE_OUTPUT
SQL_ID 402b8st7vt6ku, child number 2
SELECT /*+ gather_plan_statistics */ S.Product, S.WH_CODE, S.RACK, S.BATCH, S.EXP_DATE, FLOOR(Qty_Beg) QtyBeg_B,
ROUND(f_convert_qty(S.PRODUCT, Qty_Beg-FLOOR(Qty_Beg), P.UOM_K ), 0) QtyBeg_K, FLOOR(Qty_In) QtyIn_B, ROUND(f_convert_qty(S.P
RODUCT,
Qty_In-FLOOR(Qty_In), P.UOM_K), 0) QtyIn_K, FLOOR(Qty_Out) QtyOut_B, ROUND(f_convert_qty(S.PRODUCT, Qty_Out-FLOOR(Qty_Out), P
.UOM_K ),
0) QtyOut_K, FLOOR(Qty_Adj) QtyAdj_B, ROUND(f_convert_qty(S.PRODUCT, Qty_Adj-FLOOR(Qty_Adj), P.UOM_K ), 0) QtyAdj_K,
FLOOR(Qty_End) QtyEnd_B, ROUND(f_convert_qty(S.PRODUCT, Qty_End-FLOOR(Qty_End), P.UOM_K ), 0) QtyEnd_K, S.LOC_CODE FROM
V_STOCK_DETAIL S JOIN PRODUCTS P ON P.PRODUCT = S.PRODUCT WHERE S.Product = :pProduct AND S.WH_CODE = :pWhCode AND S.LOC
_CODE =
:pLocCode
Plan hash value: 3252950027
| Id | Operation | Name | Starts | E-Rows | A-Rows | A-Time | Buffers | OMem |
1Mem | Used-Mem |
| 1 | PX COORDINATOR | | 1 | | 83 |00:00:02.25 | 83 | |
| |
| 2 | PX SEND QC (RANDOM) | :TQ10003 | 0 | 21 | 0 |00:00:00.01 | 0 | |
| |
| 3 | HASH GROUP BY | | 0 | 21 | 0 |00:00:00.01 | 0 | |
| |
| 4 | PX RECEIVE | | 0 | 21 | 0 |00:00:00.01 | 0 | |
| |
| 5 | PX SEND HASH | :TQ10002 | 0 | 21 | 0 |00:00:00.01 | 0 | |
| |
| 6 | HASH GROUP BY | | 0 | 21 | 0 |00:00:00.01 | 0 | |
| |
| 7 | NESTED LOOPS OUTER | | 0 | 21 | 0 |00:00:00.01 | 0 | |
| |
| 8 | MERGE JOIN CARTESIAN | | 0 | 21 | 0 |00:00:00.01 | 0 | |
| |
| 9 | SORT JOIN | | 0 | | 0 |00:00:00.01 | 0 | 73728 |
73728 | |
| 10 | NESTED LOOPS | | 0 | 1 | 0 |00:00:00.01 | 0 | |
| |
| 11 | BUFFER SORT | | 0 | | 0 |00:00:00.01 | 0 | 73728 |
73728 | |
| 12 | PX RECEIVE | | 0 | | 0 |00:00:00.01 | 0 | |
| |
| 13 | PX SEND BROADCAST | :TQ10000 | 0 | | 0 |00:00:00.01 | 0 | |
| |
|* 14 | INDEX RANGE SCAN | PRODUCTS_IDX2 | 1 | 1 | 1 |00:00:00.01 | 2 | |
| |
| 15 | PX BLOCK ITERATOR | | 0 | 1 | 0 |00:00:00.01 | 0 | |
| |
|* 16 | MAT_VIEW ACCESS FULL | MV_CONVERT_UOM | 0 | 1 | 0 |00:00:00.01 | 0 | |
| |
| 17 | BUFFER SORT | | 0 | 21 | 0 |00:00:00.01 | 0 | 73728 |
73728 | |
| 18 | BUFFER SORT | | 0 | | 0 |00:00:00.01 | 0 | 73728 |
73728 | |
| 19 | PX RECEIVE | | 0 | 21 | 0 |00:00:00.01 | 0 | |
| |
| 20 | PX SEND BROADCAST | :TQ10001 | 0 | 21 | 0 |00:00:00.01 | 0 | |
| |
|* 21 | TABLE ACCESS BY INDEX ROWID| STOCK | 1 | 21 | 83 |00:00:00.01 | 78 | |
| |
|* 22 | INDEX RANGE SCAN | STOCK_PK | 1 | 91 | 83 |00:00:00.01 | 4 | |
| |
|* 23 | TABLE ACCESS BY INDEX ROWID | MV_TRANS_STOCK | 0 | 1 | 0 |00:00:00.01 | 0 | |
| |
|* 24 | INDEX RANGE SCAN | MV_TRANS_STOCK_IDX1 | 0 | 1 | 0 |00:00:00.01 | 0 | |
| |
Predicate Information (identified by operation id):
14 - access("P"."PRODUCT"=:PPRODUCT)
16 - access(:Z>=:Z AND :Z<=:Z)
filter("CON"."PRODUCT"=:PPRODUCT)
21 - filter("STOCK"."LOC_CODE"=:PLOCCODE)
22 - access("STOCK"."PRODUCT"=:PPRODUCT AND "STOCK"."WH_CODE"=:PWHCODE)
23 - filter("STS"='N')
24 - access("PRODUCT"=:PPRODUCT AND "WH_CODE"=:PWHCODE AND "LOC_CODE"=:PLOCCODE AND "RACK"="STOCK"."RACK" AND "BATCH"="STOCK"."B
ATCH" AND
"EXP_DATE"="STOCK"."EXP_DATE")
53 rows selected.
Elapsed: 00:00:00:12I'm looking forward for suggestions how to improve the performance of this statement.
Thank you very much,
xtantoxtanto wrote:
Hi sir,
How to prevent the query from doing parallel query ?
Because as you see actually I am not issuing any Parallel hints in the query.
Thank you,
xtantoKristanto,
there are a couple of points to consider:
1. Your SQL*Plus version seems to be outdated. Please use a SQL*Plus version that corresponds to your database version. E.g. the AUTOTRACE output is odd.
2. I would suggest to repeat your exercise using serial execution (the plan, the autotrace, the tracing). You can disable parallel queries by issuing this in your session:
ALTER SESSION DISABLE PARALLEL QUERY;
This way the output of the tools is much more meaningful, however you might get a different execution plan, therefore the results might not be representative for your parallel execution.
3. The function calls might pose a problem. If they are, one possible damage limitation has been provided by hoek. Even better would be then to replace the PL/SQL function with equivalent plain SQL. However since you say that it generates not too many rows it might not harm here too much. You can check the impact of the functions by running a similar query but omitting the function calls.
4. The parallel execution plan contains a MERGE JOIN CARTESIAN operation which could be an issue if the estimates of the optimizer are incorrect. If the serial execution still uses this operation the TKPROF and DBMS_XPLAN.DISPLAY_CURSOR output will reveal whether this is a problem or not.
5. The execution of the statement seems to take on 2-3 seconds in your tests. Is this in the right ballpark? If yes, why should this statement then be problematic? How often does it get executed?
6. The statement uses bind variables, so you might have executions that use different execution plans depending on the bind values passed when the statement got optimized. You can use DBMS_XPLAN.DISPLAY_CURSOR using NULL as "child_number" parameter or DBMS_XPLAN.DISPLAY_AWR (if you have a AWR license) to check if you have multiple execution plans for the statement. Please note that older versions might have already been aged out of the shared pool, so the AWR repository might be a more reliable source (but only if the statement has been sampled).
7. You have disabled cost based transformations: "_optimizer_cost_based_transformation" = OFF. Why?
Regards,
Randolf
Oracle related stuff blog:
http://oracle-randolf.blogspot.com/
SQLTools++ for Oracle (Open source Oracle GUI for Windows):
http://www.sqltools-plusplus.org:7676/
http://sourceforge.net/projects/sqlt-pp/ -
Monitoring pl/sql execution from Enterprise Manager
I need to implement monitoring of PL/SQL code from within Oracle Enterprise
Manger 10g. OEM has Custom user defined metrics (UDM) that allow one to issue
queries against a database and decide whether the output from the query is a
warning or a critical alert based on some threshold.
In my case, my pl/sql will write to a database table that OEM will monitoring by
querying periodically.
My question is how does OEM know not to report on the same error about the same
session multiple times. Once OEM has detected that my PL/SQL routine generated
an exception during one of its execution, how will know not to alert on the same
exception from the same pl/sql execution, the next time it's querying the
database?
It almost sound like the SQL query OEM will be executing needs to know what it
reported on before.
Any clarity on this would be appreciated.ok ..thanx .. can i view all historical SQL Text that is executed by a perticuler User say SCOTT.??? In the same page within SQL DETAIL you can find task owner also,
-
Hi, I upgraded my iphone 4 (4.3.3) to iso 5 beta 6, but now it shows "No Service" at top left, and unable to complete your activation. Also tells that "this device is not registered as part of the iphone developer programme." How could I fix this problem? Please help me...,
I had a similar occurrence with my just activated iPhone 4.
I had been using the phone for three days when an odd occurrence with voice mail caused me to call tech support. After some discussion they decided to push the activation to my phone (even though I had been using it for three days). When I went to power it back up again I repeatedly got the "no service" notification. I got tech support on a land line and we tried hard reboots and so on. No joy. They told me to take it in to the point of sale and either the SIM card or the phone needed (or both) needed replacing.
I tried one last hard reboot after dinner and the phone came up with service, but I took it in to the point of sale in the morning and they swapped the SIM card out and I went to a Genius Bar appointment to get the phone checked out. It is supposedly OK, but I am still having some problems when syncing it so I will have to visit the Genius Bar again tomorrow about that. At least I have not experienced the "no service" problem in the roughly 24 hours since the SIM card was replaced. (Fingers crossed) -
have a problem with my MacBook Pro.5,3 and monitor. Intermittently, the desk top screen becomes broken up into vertical sections, which appear in the wrong order, creating a haphazard picture.
The Apple icon, usually at top left corner, appears in top right corner in a strip including all that left hand. When the computer is restarted, the screen goes back to normal. But I have to move the mouse to the far left of the screen and then up until it reappears on the far right hand side of the screen so that I can hit shut down button.
It seems to happen randomly though always on desk top and sometimes when I move mouse and computer switches on from rest mode. My large flat screen is relatively new.
The video card on this computer, which is approximately two years old, is Nvidia FeForce 9400M.
Any help would be welcome as my usual source of assistance is not available and I am not well versed in workings of the Mac although I have used one for many years.That sounds like a Hardware problem.
You may be able to confirm that with Apple Hardware Test, or make an appointmenst for a free Genius Bar evaluation. -
I have Mozilla Firefox as my web browser. However I have just lost my Firefox "button" on the top of my monitor screen and can't get it back. How do I do that?
Hello andytuveson, right-click on an empty section of the Tab Strip and uncheck Menu Bar in the pop-up menu.
see : [https://support.mozilla.org/en-US/kb/display-firefox-button-menu-instead-menu-toolbar Display the Firefox button menu instead of the menu toolbar]
thank you -
Backtrace of ABAP and SQL execution
Hello everyone!
Does anybody know how to see logs of ABAP and SQL execution. I saw SLG1 but didn't found this information.
I'm not interested in writing to SLG, I want to have opportunity to see the User, who deleted some entries from tables or launched ABAP code, for example.Do you mean transcation SCU3 for viewing table changes?
Yes
About ABAP-SQL execution... I can't foresee which program will be executed and which table will be effected, so I need some report that shows for particular table which statement was executed, and report about list of programs run by user. Do you know this?
You can see which transaction is executed by a user on given period of time by using transaction ST03
But which table accessed or which sql executed, in a scenrio in which you cannot forsee then its not possible.
a® -
Lync Standard Edition Server pairing -- Archiving and monitoring collocated but Single SQL backend
Hi,
I have a scenario where in ---we have Two Standard Edition Servers ( SE1 and SE2) with 1K users each ( Total 2K in one Site) paired to enable High Availability. The Standard Edition Server has archiving and monitoring and mediation server collocated.
For archiving + monitoring database we have a Seperate SQL enterprise edition server.
Quetions:
1. Can we use single SQL Enterprise Edition as backend for (archiving and monitoring ) for both SE1 and SE2 ?
2. If yes, do we need two seperate instances?
3. If not, could you please suggest the best possible solution in such an environment ?
Regards,
Archana RaoHi ArchanaVR,
Agree with Michael, and add some more details.
By default, the SQL Server Express back-end database is collocated on the Standard Edition server. You cannot move it to a separate computer. With one exception, you cannot collocate other databases on the Standard Edition server. If you choose to deploy
Persistent Chat Server on a Standard Edition server, you can collocate the Persistent chat database and the Persistent Chat Compliance database on the same Standard Edition server.
You can collocate each of the following databases on a single database server:
Monitoring database
Archiving database
A back-end database for an Enterprise Edition Front End pool
You can collocate any or any or all of these databases in a single SQL instance or use a separate SQL instances for each, with the following limitations:
Each SQL instance can contain only a single back-end database (for an Enterprise Edition Front End pool), single Monitoring database, single Archiving database, single persistent chat database, and single persistent chat compliance database.
The database server cannot support more than one Enterprise Edition Front End pool, one server running Archiving, one server running Monitoring, single Persistent Chat database, and single Persistent Chat compliance database, but it can support one of each,
regardless of whether the databases use the same instance of SQL Server or separate instances of SQL Server.
http://technet.microsoft.com/en-us/library/gg398131.aspx
Best regards,
Eric -
ODI: remote monitoring and control of execution
Hi. I'm interested in is there any way to monitor execution of packages, interfaces with some web interface ot something else?
(maybe something like in OWB web interface)
Thanks in advance.Hi Vovanenok,
Yes that is possible. You can use Metadata Navigator component of ODI to monitor your execution from remote.
Please check the ODI Setup document for deploying/installing MN.
Thanks,
G -
Top activity chart on Enterprise manager
Hi,
The Top activity chart is not empty on the Enterprise manager of a 2 node 11gR2 RAC DB,
the statistics_level is set to "typical".
NAME TYPE VALUE
optimizer_use_pending_statistics boolean FALSE
statistics_level string TYPICAL
timed_os_statistics integer 0
timed_statistics boolean TRUE
$emctl status dbconsole
Oracle Enterprise Manager 11g Database Control Release 11.2.0.3.0
Copyright (c) 1996, 2011 Oracle Corporation. All rights reserved.
https://xx.xx.xx:1158/em/console/aboutApplication
Oracle Enterprise Manager 11g is running.
Logs are generated in directory /u01/app/oracle/product/11.2.0/db_1/xxx01_orcl/sysman/log
$emctl status agent
Oracle Enterprise Manager 11g Database Control Release 11.2.0.3.0
Copyright (c) 1996, 2011 Oracle Corporation. All rights reserved.
Agent Version : 10.2.0.4.4
OMS Version : 10.2.0.4.4
Protocol Version : 10.2.0.4.4
Agent Home : /u01/app/oracle/product/11.2.0/db_1/xxx01_orcl
Agent binaries : /u01/app/oracle/product/11.2.0/db_1
Agent Process ID : 815
Parent Process ID : 801
Agent URL : https://xxx.xx.xx:3938/emd/main
Repository URL : https://xx.xx.xx:1158/em/upload/
Started at : 2013-09-20 06:39:57
Started by user : oracle
Last Reload : 2013-12-09 19:37:51
Last successful upload : 2013-12-26 09:47:31
Total Megabytes of XML files uploaded so far : 3257.08
Number of XML files pending upload : 0
Size of XML files pending upload(MB) : 0.00
Available disk space on upload filesystem : 54.07%
Data channel upload directory : /u01/app/oracle/product/11.2.0/db_1/xxxx01_orcl/sysman/recv
Last successful heartbeat to OMS : 2013-12-26 09:49:41
Agent is Running and Ready
How can I enable the Top Activity chart on the Enterprise manager console.
Thanks in advance.There is no pending upload in the EM Agent,
STATISTICS_NAME ACTIVATION_LEV SYSTEM_STATUS STATISTICS_VIEW_NAME SESSIO
Buffer Cache Advice TYPICAL ENABLED V$DB_CACHE_ADVICE NO
MTTR Advice TYPICAL ENABLED V$MTTR_TARGET_ADVICE NO
Timed Statistics TYPICAL ENABLED YES
Timed OS Statistics ALL DISABLED YES
Segment Level Statistics TYPICAL ENABLED V$SEGSTAT NO
PGA Advice TYPICAL ENABLED V$PGA_TARGET_ADVICE NO
Plan Execution Statistics ALL DISABLED V$SQL_PLAN_STATISTICS YES
Shared Pool Advice TYPICAL ENABLED V$SHARED_POOL_ADVICE NO
Modification Monitoring TYPICAL ENABLED NO
Longops Statistics TYPICAL ENABLED V$SESSION_LONGOPS NO
Bind Data Capture TYPICAL ENABLED V$SQL_BIND_CAPTURE NO
Ultrafast Latch Statistics TYPICAL ENABLED NO
Threshold-based Alerts TYPICAL ENABLED NO
Global Cache Statistics TYPICAL ENABLED NO
Active Session History TYPICAL ENABLED V$ACTIVE_SESSION_HISTORY NO
Undo Advisor, Alerts and Fast TYPICAL ENABLED V$UNDOSTAT NO
Ramp up
Streams Pool Advice TYPICAL ENABLED V$STREAMS_POOL_ADVICE NO
Time Model Events TYPICAL ENABLED V$SESS_TIME_MODEL YES
Plan Execution Sampling TYPICAL ENABLED V$ACTIVE_SESSION_HISTORY YES
Automated Maintenance Tasks TYPICAL ENABLED NO
SQL Monitoring TYPICAL ENABLED V$SQL_MONITORING YES
Adaptive Thresholds Enabled TYPICAL ENABLED NO
V$IOSTAT_* statistics TYPICAL ENABLED NO
23 rows selected. -
Oracle SQL and PL/SQL interview questions.
Can anyone forward me all Oracle SQL and PL/SQL Interview questions and answers asap.
Many Thanks.
BbaDear Pal
I not sure all the all answers are correct. I got one mail couple yrs back. I am just sharing mail contents. Kindly keep question and compare answers.
1 Which is more faster - IN or EXISTS?
EXISTS is more faster than IN because EXISTS returns a Boolean value whereas IN returns a value.
2 Which datatype is used for storing graphics and images?
LONG RAW data type is used for storing BLOB's (binary large objects).
3 When do you use WHERE clause and when do you use HAVING clause?
HAVING clause is used when you want to specify a condition for a group function and it is written after GROUP BY clause. The WHERE clause is used when you want to specify a condition for columns, single row functions except group functions and it is written before GROUP BY clause if it is used.
4 What WHERE CURRENT OF clause does in a cursor?
LOOPSELECT num_credits INTO v_numcredits FROM classesWHERE dept=123 and course=101;UPDATE studentsSET current_credits=current_credits+v_numcreditsWHERE CURRENT OF X;END LOOPCOMMIT;END;
5 What should be the return type for a cursor variable.Can we use a scalar data type as return type?
The return type for a cursor must be a record type.It can be declared explicitly as a user-defined or %ROWTYPE can be used. eg TYPE t_studentsref IS REF CURSOR RETURN students%ROWTYPE
6 What is use of a cursor variable? How it is defined?
A cursor variable is associated with different statements at run time, which can hold different values at run time. Static cursors can only be associated with one run time query. A cursor variable is reference type (like a pointer in C).Declaring a cursor variable:TYPE type_name IS REF CURSOR RETURN return_type type_name is the name of the reference type,return_type is a record type indicating the types of the select list that will eventually be returned by the cursor variable.
7 What is the purpose of a cluster?
Oracle does not allow a user to specifically locate tables, since that is a part of the function of the RDBMS. However, for the purpose of increasing performance, oracle allows a developer to create a CLUSTER. A CLUSTER provides a means for storing data from different tables together for faster retrieval than if the table placement were left to the RDBMS.
8 What is the maximum buffer size that can be specified using the DBMS_OUTPUT.ENABLE function?
1,000,00
9 What is syntax for dropping a procedure and a function .Are these operations possible?
Drop Procedure procedure_nameDrop Function function_name
10 What is OCI. What are its uses?
Oracle Call Interface is a method of accesing database from a 3GL program. Uses--No precompiler is required,PL/SQL blocks are executed like other DML statements. The OCI library provides· -functions to parse SQL statemets· -bind input variables· -bind output variables· -execute statements· -fetch the results
11 What is difference between UNIQUE and PRIMARY KEY constraints?
A table can have only one PRIMARY KEY whereas there can be any number of UNIQUE keys. The columns that compose PK are automatically define NOT NULL, whereas a column that compose a UNIQUE is not automatically defined to be mandatory must also specify the column is NOT NULL.
12 What is difference between SUBSTR and INSTR?
SUBSTR returns a specified portion of a string eg SUBSTR('BCDEF',4) output BCDEINSTR provides character position in which a pattern is found in a string. eg INSTR('ABC-DC-F','-',2) output 7 (2nd occurence of '-')
13 What is difference between SQL and SQL*PLUS?
SQL*PLUS is a command line tool where as SQL and PL/SQL language interface and reporting tool. Its a command line tool that allows user to type SQL commands to be executed directly against an Oracle database. SQL is a language used to query the relational database(DML,DCL,DDL). SQL*PLUS commands are used to format query result, Set options, Edit SQL commands and PL/SQL.
14 What is difference between Rename and Alias?
Rename is a permanent name given to a table or column whereas Alias is a temporary name given to a table or column which do not exist once the SQL statement is executed.
15 What is difference between a formal and an actual parameter?
The variables declared in the procedure and which are passed, as arguments are called actual, the parameters in the procedure declaration. Actual parameters contain the values that are passed to a procedure and receive results. Formal parameters are the placeholders for the values of actual parameters
16 What is an UTL_FILE.What are different procedures and functions associated with it?
UTL_FILE is a package that adds the ability to read and write to operating system files. Procedures associated with it are FCLOSE, FCLOSE_ALL and 5 procedures to output data to a file PUT, PUT_LINE, NEW_LINE, PUTF, FFLUSH.PUT, FFLUSH.PUT_LINE,FFLUSH.NEW_LINE. Functions associated with it are FOPEN, ISOPEN.
17 What is a view ?
A view is stored procedure based on one or more tables, its a virtual table.
18 What is a pseudo column. Give some examples?
It is a column that is not an actual column in the table.eg USER, UID, SYSDATE, ROWNUM, ROWID, NULL, AND LEVEL.
19 What is a OUTER JOIN?
Outer Join--Its a join condition used where you can query all the rows of one of the tables in the join condition even though they dont satisfy the join condition.
20 What is a cursor?
Oracle uses work area to execute SQL statements and store processing information PL/SQL construct called a cursor lets you name a work area and access its stored information A cursor is a mechanism used to fetch more than one row in a Pl/SQl block.
21 What is a cursor for loop?
Cursor For Loop is a loop where oracle implicitly declares a loop variable, the loop index that of the same record type as the cursor's record.
22 What are various privileges that a user can grant to another user?
· SELECT· CONNECT· RESOURCES
23 What are various constraints used in SQL?
· NULL· NOT NULL· CHECK· DEFAULT
24 What are ORACLE PRECOMPILERS?
Using ORACLE PRECOMPILERS, SQL statements and PL/SQL blocks can be contained inside 3GL programs written in C,C++,COBOL,PASCAL, FORTRAN,PL/1 AND ADA.The Precompilers are known as Pro*C,Pro*Cobol,...This form of PL/SQL is known as embedded pl/sql,the language in which pl/sql is embedded is known as the host language. The prcompiler translates the embedded SQL and pl/sql ststements into calls to the precompiler runtime library.The output must be compiled and linked with this library to creater an executable.
25 What are different Oracle database objects?
· TABLES· VIEWS· INDEXES· SYNONYMS· SEQUENCES· TABLESPACES etc
26 What are different modes of parameters used in functions and procedures?
· IN· OUT· INOUT
27 What are cursor attributes?
· %ROWCOUNT· %NOTFOUND· %FOUND· %ISOPEN
28 What a SELECT FOR UPDATE cursor represent. [ANSWER]SELECT......FROM......FOR......UPDATE[OF column-reference][NOWAIT] The processing done in a fetch loop modifies the rows that have been retrieved by the cursor. A convenient way of modifying the rows is done by a method with two parts: the FOR UPDATE clause in the cursor declaration, WHERE CURRENT OF CLAUSE in an UPDATE or declaration statement.
29 There is a string 120000 12 0 .125 , how you will find the position of the decimal place?
INSTR('120000 12 0 .125',1,'.')output 13
30 There is a % sign in one field of a column. What will be the query to find it?
'' Should be used before '%'.
31 Suppose a customer table is having different columns like customer no, payments.What will be the query to select top three max payments?
SELECT customer_no, payments from customer C1
WHERE 3<=(SELECT COUNT(*) from customer C2
WHERE C1.payment <= C2.payment)
32 minvalue.sql Select the Nth lowest value from a table
select level, min('col_name') from my_table where level = '&n' connect by prior ('col_name') <
'col_name')
group by level;
Example:
Given a table called emp with the following columns:
-- id number
-- name varchar2(20)
-- sal number
-- For the second lowest salary:
-- select level, min(sal) from emp
-- where level=2
-- connect by prior sal < sal
-- group by level
33 maxvalue.sql Select the Nth Highest value from a table
select level, max('col_name') from my_table where level = '&n' connect by prior ('col_name') >
'col_name')
group by level;
Example:
Given a table called emp with the following columns:
-- id number
-- name varchar2(20)
-- sal number
-- For the second highest salary:
-- select level, max(sal) from emp
-- where level=2
-- connect by prior sal > sal
-- group by level
34 How you will avoid your query from using indexes?
SELECT * FROM emp
Where emp_no+' '=12345;
i.e you have to concatenate the column name with space within codes in the where condition.
SELECT /*+ FULL(a) */ ename, emp_no from emp
where emp_no=1234;
i.e using HINTS
35 How you will avoid duplicating records in a query?
By using DISTINCT
36 How you were passing cursor variables in PL/SQL 2.2?
In PL/SQL 2.2 cursor variables cannot be declared in a package.This is because the storage for a cursor variable has to be allocated using Pro*C or OCI with version 2.2, the only means of passing a cursor variable to a PL/SQL block is via bind variable or a procedure parameter.
37 How you open and close a cursor variable.Why it is required?
OPEN cursor variable FOR SELECT...Statement
CLOSE cursor variable In order to associate a cursor variable with a particular SELECT statement OPEN syntax is used. In order to free the resources used for the query CLOSE statement is used.
38 How will you delete duplicating rows from a base table?
delete from table_name where rowid not in (select max(rowid) from table group by duplicate_values_field_name); or
delete duplicate_values_field_name dv from table_name ta where rowid <(select min(rowid) from table_name tb where ta.dv=tb.dv);
39 How do you find the numbert of rows in a Table ?
A bad answer is count them (SELECT COUNT(*) FROM table_name)
A good answer is :-
'By generating SQL to ANALYZE TABLE table_name COUNT STATISTICS by querying Oracle System Catalogues (e.g. USER_TABLES or ALL_TABLES).
The best answer is to refer to the utility which Oracle released which makes it unnecessary to do ANALYZE TABLE for each Table individually.
40 Find out nth highest salary from emp table
SELECT DISTINCT (a.sal) FROM EMP A WHERE &N = (SELECT COUNT (DISTINCT (b.sal)) FROM EMP B WHERE a.sal<=b.sal);
For Eg:-
Enter value for n: 2
SAL
3700
41 Display the records between two range?
select rownum, empno, ename from emp where rowid in (select rowid from emp where rownum <=&upto minus select rowid from emp where rownum<&Start);
42 Display the number value in Words?
SQL> select sal, (to_char(to_date(sal,'j'), 'jsp'))
from emp;
the output like,
SAL (TO_CHAR(TO_DATE(SAL,'J'),'JSP'))
800 eight hundred
1600 one thousand six hundred
1250 one thousand two hundred fifty
If you want to add some text like, Rs. Three Thousand only.
SQL> select sal "Salary ",
(' Rs. '|| (to_char(to_date(sal,'j'), 'Jsp'))|| ' only.'))
"Sal in Words" from emp
Salary Sal in Words
800 Rs. Eight Hundred only.
1600 Rs. One Thousand Six Hundred only.
1250 Rs. One Thousand Two Hundred Fifty only.
43 Display Odd/ Even number of records
Odd number of records:
select * from emp where (rowid,1) in (select rowid, mod(rownum,2) from emp);
Output:-
1
3
5
Even number of records:
select * from emp where (rowid,0) in (select rowid, mod(rownum,2) from emp)
Output:-
2
4
6
44 Difference between procedure and function.
Functions are named PL/SQL blocks that return a value and can be called with arguments procedure a named block that can be called with parameter. A procedure all is a PL/SQL statement by itself, while a Function call is called as part of an expression.
45 Difference between NO DATA FOUND and %NOTFOUND
NO DATA FOUND is an exception raised only for the SELECT....INTO statements when the where clause of the querydoes not match any rows. When the where clause of the explicit cursor does not match any rows the %NOTFOUND attribute is set to TRUE instead.
46 Difference between database triggers and form triggers?
Data base trigger(DBT) fires when a DML operation is performed on a data base table. Form trigger(FT) Fires when user presses a key or navigates between fields on the screen
Can be row level or statement level No distinction between row level and statement level.
Can manipulate data stored in Oracle tables via SQL Can manipulate data in Oracle tables as well as variables in forms.
Can be fired from any session executing the triggering DML statements. Can be fired only from the form that define the trigger.
Can cause other database triggers to fire.Can cause other database triggers to fire, but not other form triggers.
47 Difference between an implicit & an explicit cursor.
PL/SQL declares a cursor implicitly for all SQL data manipulation statements, including quries that return only one row. However,queries that return more than one row you must declare an explicit cursor or use a cursor FOR loop.
Explicit cursor is a cursor in which the cursor name is explicitly assigned to a SELECT statement via the CURSOR...IS statement. An implicit cursor is used for all SQL statements Declare, Open, Fetch, Close. An explicit cursors are used to process multirow SELECT statements An implicit cursor is used to process INSERT, UPDATE, DELETE and single row SELECT. .INTO statements.
48 Can you use a commit statement within a database trigger?
No.
49 Can the default values be assigned to actual parameters?
Yes
50 Can cursor variables be stored in PL/SQL tables.If yes how. If not why?
No, a cursor variable points a row which cannot be stored in a two-dimensional PL/SQL table.
51 Can a primary key contain more than one columns?
Yes
52 Can a function take OUT parameters. If not why?
No. A function has to return a value,an OUT parameter cannot return a value.
53 What are various joins used while writing SUBQUERIES?
Self join-Its a join foreign key of a table references the same table. Outer Join--Its a join condition used where One can query all the rows of one of the tables in the join condition even though they don't satisfy the join condition.
Equi-join--Its a join condition that retrieves rows from one or more tables in which one or more columns in one table are equal to one or more columns in the second table.
54 Differentiate between TRUNCATE and DELETE
TRUNCATE deletes much faster than DELETE
TRUNCATE
DELETE
It is a DDL statement It is a DML statement
It is a one way trip,cannot ROLLBACK One can Rollback
Doesn't have selective features (where clause) Has
Doesn't fire database triggers Does
It requires disabling of referential constraints. Does not require
1 What is PL/SQL ?
PL/SQL is a procedural language that has both interactive SQL and procedural programming language constructs such as iteration, conditional branching.
2 Write the order of precedence for validation of a column in a table ?
I. done using Database triggers.
ii. done using Integarity Constraints.
I & ii.
Exception :
3 Where the Pre_defined_exceptions are stored ?
In the standard package.
Procedures, Functions & Packages ;
4 What are % TYPE and % ROWTYPE ? What are the advantages of using these over datatypes?
% TYPE provides the data type of a variable or a database column to that variable.
% ROWTYPE provides the record type that represents a entire row of a table or view or columns selected in the cursor.
The advantages are : I. Need not know about variable's data type
ii. If the database definition of a column in a table changes, the data type of a variable changes accordingly.
5 What will happen after commit statement ?
Cursor C1 is
Select empno,
ename from emp;
Begin
open C1; loop
Fetch C1 into
eno.ename;
Exit When
C1 %notfound;-----
commit;
end loop;
end;
The cursor having query as SELECT .... FOR UPDATE gets closed after COMMIT/ROLLBACK.
The cursor having query as SELECT.... does not get closed even after COMMIT/ROLLBACK.
6 What is the basic structure of PL/SQL ?
PL/SQL uses block structure as its basic structure. Anonymous blocks or nested blocks can be used in PL/SQL.
7 What is Raise_application_error ?
Raise_application_error is a procedure of package DBMS_STANDARD which allows to issue an user_defined error messages from stored sub-program or database trigger.
8 What is Pragma EXECPTION_INIT ? Explain the usage ?
The PRAGMA EXECPTION_INIT tells the complier to associate an exception with an oracle error. To get an error message of a specific oracle error.
e.g. PRAGMA EXCEPTION_INIT (exception name, oracle error number)
9 What is PL/SQL table ?
Objects of type TABLE are called "PL/SQL tables", which are modeled as (but not the same as) database tables, PL/SQL tables use a primary PL/SQL tables can have one column and a primary key.
Cursors
10 What is Overloading of procedures ?
The Same procedure name is repeated with parameters of different datatypes and parameters in different positions, varying number of parameters is called overloading of procedures.
e.g. DBMS_OUTPUT put_line
What is a package ? What are the advantages of packages ?
11 What is difference between a PROCEDURE & FUNCTION ?
A FUNCTION is always returns a value using the return statement.
A PROCEDURE may return one or more values through parameters or may not return at all.
12 What is difference between a Cursor declared in a procedure and Cursor declared in a package specification ?
A cursor declared in a package specification is global and can be accessed by other procedures or procedures in a package.
A cursor declared in a procedure is local to the procedure that can not be accessed by other procedures.
13 What is difference between % ROWTYPE and TYPE RECORD ?
% ROWTYPE is to be used whenever query returns a entire row of a table or view.
TYPE rec RECORD is to be used whenever query returns columns of different
table or views and variables.
E.g. TYPE r_emp is RECORD (eno emp.empno% type,ename emp ename %type
e_rec emp% ROWTYPE
cursor c1 is select empno,deptno from emp;
e_rec c1 %ROWTYPE.
14 What is an Exception ? What are types of Exception ?
Exception is the error handling part of PL/SQL block. The types are Predefined and user defined. Some of Predefined exceptions are.
CURSOR_ALREADY_OPEN
DUP_VAL_ON_INDEX
NO_DATA_FOUND
TOO_MANY_ROWS
INVALID_CURSOR
INVALID_NUMBER
LOGON_DENIED
NOT_LOGGED_ON
PROGRAM-ERROR
STORAGE_ERROR
TIMEOUT_ON_RESOURCE
VALUE_ERROR
ZERO_DIVIDE
OTHERS.
15 What is a stored procedure ?
A stored procedure is a sequence of statements that perform specific function.
16 What is a database trigger ? Name some usages of database trigger ?
Database trigger is stored PL/SQL program unit associated with a specific database table. Usages are Audit data modifications, Log events transparently, Enforce complex business rules Derive column values automatically, Implement complex security authorizations. Maintain replicate tables.
17 What is a cursor for loop ?
Cursor for loop implicitly declares %ROWTYPE as loop index,opens a cursor, fetches rows of values from active set into fields in the record and closes
when all the records have been processed.
eg. FOR emp_rec IN C1 LOOP
salary_total := salary_total +emp_rec sal;
END LOOP;
18 What is a cursor ? Why Cursor is required ?
Cursor is a named private SQL area from where information can be accessed. Cursors are required to process rows individually for queries returning multiple rows.
19 What happens if a procedure that updates a column of table X is called in a database trigger of the same table ?
Mutation of table occurs.
20 What are two virtual tables available during database trigger execution ?
The table columns are referred as OLD.column_name and NEW.column_name.
For triggers related to INSERT only NEW.column_name values only available.
For triggers related to UPDATE only OLD.column_name NEW.column_name values only available.
For triggers related to DELETE only OLD.column_name values only available.
21 What are two parts of package ?
The two parts of package are PACKAGE SPECIFICATION & PACKAGE BODY.
Package Specification contains declarations that are global to the packages and local to the schema.
Package Body contains actual procedures and local declaration of the procedures and cursor declarations.
22 What are the two parts of a procedure ?
Procedure Specification and Procedure Body.
23 What are the return values of functions SQLCODE and SQLERRM ?
SQLCODE returns the latest code of the error that has occurred.
SQLERRM returns the relevant error message of the SQLCODE.
24 What are the PL/SQL Statements used in cursor processing ?
DECLARE CURSOR cursor name, OPEN cursor name, FETCH cursor name INTO or Record types, CLOSE cursor name.
25 What are the modes of parameters that can be passed to a procedure ?
IN,OUT,IN-OUT parameters.
26 What are the datatypes a available in PL/SQL ?
Some scalar data types such as NUMBER, VARCHAR2, DATE, CHAR, LONG, BOOLEAN.
Some composite data types such as RECORD & TABLE.
27 What are the cursor attributes used in PL/SQL ?
%ISOPEN - to check whether cursor is open or not
% ROWCOUNT - number of rows fetched/updated/deleted.
% FOUND - to check whether cursor has fetched any row. True if rows are fetched.
% NOT FOUND - to check whether cursor has fetched any row. True if no rows are featched.
These attributes are proceeded with SQL for Implicit Cursors and with Cursor name for Explicit Cursors.
28 What are the components of a PL/SQL Block ?
Declarative part, Executable part and Exception part.
Datatypes PL/SQL
29 What are the components of a PL/SQL block ?
A set of related declarations and procedural statements is called block.
30 What are advantages fo Stored Procedures /
Extensibility,Modularity, Reusability, Maintainability and one time compilation.
1 What is PL/SQL ?
PL/SQL is a procedural language that has both interactive SQL and procedural programming language constructs such as iteration, conditional branching.
2 Write the order of precedence for validation of a column in a table ?
I. done using Database triggers.
ii. done using Integarity Constraints.
I & ii.
Exception :
3 Where the Pre_defined_exceptions are stored ?
In the standard package.
Procedures, Functions & Packages ;
4 What are % TYPE and % ROWTYPE ? What are the advantages of using these over datatypes?
% TYPE provides the data type of a variable or a database column to that variable.
% ROWTYPE provides the record type that represents a entire row of a table or view or columns selected in the cursor.
The advantages are : I. Need not know about variable's data type
ii. If the database definition of a column in a table changes, the data type of a variable changes accordingly.
5 What will happen after commit statement ?
Cursor C1 is
Select empno,
ename from emp;
Begin
open C1; loop
Fetch C1 into
eno.ename;
Exit When
C1 %notfound;-----
commit;
end loop;
end;
The cursor having query as SELECT .... FOR UPDATE gets closed after COMMIT/ROLLBACK.
The cursor having query as SELECT.... does not get closed even after COMMIT/ROLLBACK.
6 What is the basic structure of PL/SQL ?
PL/SQL uses block structure as its basic structure. Anonymous blocks or nested blocks can be used in PL/SQL.
7 What is Raise_application_error ?
Raise_application_error is a procedure of package DBMS_STANDARD which allows to issue an user_defined error messages from stored sub-program or database trigger.
8 What is Pragma EXECPTION_INIT ? Explain the usage ?
The PRAGMA EXECPTION_INIT tells the complier to associate an exception with an oracle error. To get an error message of a specific oracle error.
e.g. PRAGMA EXCEPTION_INIT (exception name, oracle error number)
9 What is PL/SQL table ?
Objects of type TABLE are called "PL/SQL tables", which are modeled as (but not the same as) database tables, PL/SQL tables use a primary PL/SQL tables can have one column and a primary key.
Cursors
10 What is Overloading of procedures ?
The Same procedure name is repeated with parameters of different datatypes and parameters in different positions, varying number of parameters is called overloading of procedures.
e.g. DBMS_OUTPUT put_line
What is a package ? What are the advantages of packages ?
11 What is difference between a PROCEDURE & FUNCTION ?
A FUNCTION is always returns a value using the return statement.
A PROCEDURE may return one or more values through parameters or may not return at all.
12 What is difference between a Cursor declared in a procedure and Cursor declared in a package specification ?
A cursor declared in a package specification is global and can be accessed by other procedures or procedures in a package.
A cursor declared in a procedure is local to the procedure that can not be accessed by other procedures.
13 What is difference between % ROWTYPE and TYPE RECORD ?
% ROWTYPE is to be used whenever query returns a entire row of a table or view.
TYPE rec RECORD is to be used whenever query returns columns of different
table or views and variables.
E.g. TYPE r_emp is RECORD (eno emp.empno% type,ename emp ename %type
e_rec emp% ROWTYPE
cursor c1 is select empno,deptno from emp;
e_rec c1 %ROWTYPE.
14 What is an Exception ? What are types of Exception ?
Exception is the error handling part of PL/SQL block. The types are Predefined and user defined. Some of Predefined exceptions are.
CURSOR_ALREADY_OPEN
DUP_VAL_ON_INDEX
NO_DATA_FOUND
TOO_MANY_ROWS
INVALID_CURSOR
INVALID_NUMBER
LOGON_DENIED
NOT_LOGGED_ON
PROGRAM-ERROR
STORAGE_ERROR
TIMEOUT_ON_RESOURCE
VALUE_ERROR
ZERO_DIVIDE
OTHERS.
15 What is a stored procedure ?
A stored procedure is a sequence of statements that perform specific function.
16 What is a database trigger ? Name some usages of database trigger ?
Database trigger is stored PL/SQL program unit associated with a specific database table. Usages are Audit data modifications, Log events transparently, Enforce complex business rules Derive column values automatically, Implement complex security authorizations. Maintain replicate tables.
17 What is a cursor for loop ?
Cursor for loop implicitly declares %ROWTYPE as loop index,opens a cursor, fetches rows of values from active set into fields in the record and closes
when all the records have been processed.
eg. FOR emp_rec IN C1 LOOP
salary_total := salary_total +emp_rec sal;
END LOOP;
18 What is a cursor ? Why Cursor is required ?
Cursor is a named private SQL area from where information can be accessed. Cursors are required to process rows individually for queries returning multiple rows.
19 What happens if a procedure that updates a column of table X is called in a database trigger of the same table ?
Mutation of table occurs.
20 What are two virtual tables available during database trigger execution ?
The table columns are referred as OLD.column_name and NEW.column_name.
For triggers related to INSERT only NEW.column_name values only available.
For triggers related to UPDATE only OLD.column_name NEW.column_name values only available.
For triggers related to DELETE only OLD.column_name values only available.
21 What are two parts of package ?
The two parts of package are PACKAGE SPECIFICATION & PACKAGE BODY.
Package Specification contains declarations that are global to the packages and local to the schema.
Package Body contains actual procedures and local declaration of the procedures and cursor declarations.
22 What are the two parts of a procedure ?
Procedure Specification and Procedure Body.
23 What are the return values of functions SQLCODE and SQLERRM ?
SQLCODE returns the latest code of the error that has occurred.
SQLERRM returns the relevant error message of the SQLCODE.
24 What are the PL/SQL Statements used in cursor processing ?
DECLARE CURSOR cursor name, OPEN cursor name, FETCH cursor name INTO or Record types, CLOSE cursor name.
25 What are the modes of parameters that can be passed to a procedure ?
IN,OUT,IN-OUT parameters.
26 What are the datatypes a available in PL/SQL ?
Some scalar data types such as NUMBER, VARCHAR2, DATE, CHAR, LONG, BOOLEAN.
Some composite data types such as RECORD & TABLE.
27 What are the cursor attributes used in PL/SQL ?
%ISOPEN - to check whether cursor is open or not
% ROWCOUNT - number of rows fetched/updated/deleted.
% FOUND - to check whether cursor has fetched any row. True if rows are fetched.
% NOT FOUND - to check whether cursor has fetched any row. True if no rows are featched.
These attributes are proceeded with SQL for Implicit Cursors and with Cursor name for Explicit Cursors.
28 What are the components of a PL/SQL Block ?
Declarative part, Executable part and Exception part.
Datatypes PL/SQL
29 What are the components of a PL/SQL block ?
A set of related declarations and procedural statements is called block.
30 What are advantages fo Stored Procedures /
Extensibility,Modularity, Reusability, Maintainability and one time compilation.
31 Name the tables where characteristics of Package, procedure and functions are stored ?
User_objects, User_Source and User_error.
32 Is it possible to use Transaction control Statements such a ROLLBACK or COMMIT in Database Trigger ? Why ?
It is not possible. As triggers are defined for each table, if you use COMMIT of ROLLBACK in a trigger, it affects logical transaction processing.
33 How packaged procedures and functions are called from the following?
a. Stored procedure or anonymous block
b. an application program such a PRC C, PRO COBOL
c. SQL *PLUS
a. PACKAGE NAME.PROCEDURE NAME (parameters);
variable := PACKAGE NAME.FUNCTION NAME (arguments);
EXEC SQL EXECUTE
b.
BEGIN
PACKAGE NAME.PROCEDURE NAME (parameters)
variable := PACKAGE NAME.FUNCTION NAME (arguments);
END;
END EXEC;
c. EXECUTE PACKAGE NAME.PROCEDURE if the procedures does not have any
out/in-out parameters. A function can not be called.
34 How many types of database triggers can be specified on a table ? What are they ?
Insert Update Delete
Before Row o.k. o.k. o.k.
After Row o.k. o.k. o.k.
Before Statement o.k. o.k. o.k.
After Statement o.k. o.k. o.k.
If FOR EACH ROW clause is specified, then the trigger for each Row affected by the statement.
If WHEN clause is specified, the trigger fires according to the returned Boolean value.
35 Give the structure of the procedure ?
PROCEDURE name (parameter list.....)
is
local variable declarations
BEGIN
Executable statements.
Exception.
exception handlers
end;
36 Give the structure of the function ?
FUNCTION name (argument list .....) Return datatype is
local variable declarations
Begin
executable statements
Exception
execution handlers
End;
37 Explain the usage of WHERE CURRENT OF clause in cursors ?
WHERE CURRENT OF clause in an UPDATE,DELETE statement refers to the latest row fetched from a cursor.
Database Triggers
38 Explain the two type of Cursors ?
There are two types of cursors, Implicit Cursor and Explicit Cursor.
PL/SQL uses Implicit Cursors for queries.
User defined cursors are called Explicit Cursors. They can be declared and used.
39 Explain how procedures and functions are called in a PL/SQL block ?
Function is called as part of an expression.
sal := calculate_sal ('a822');
procedure is called as a PL/SQL statement
calculate_bonus ('A822');
Programmatic Constructs
Last Update: September 06, 2004
1 What are the different types of PL/SQL program units that can be defined and stored in ORACLE database ?
Procedures and Functions,Packages and Database Triggers.
2 What are the differences between Database Trigger and Integrity constraints ?
A declarative integrity constraint is a statement about the database that is always true. A constraint applies to existing data in the table and any statement that manipulates the table.
A trigger does not apply to data loaded before the definition of the trigger, therefore, it does not guarantee all data in a table conforms to the rules established by an associated trigger.
A trigger can be used to enforce transitional constraints where as a declarative integrity constraint cannot be used.
3 What is difference between Procedures and Functions ?
A Function returns a value to the caller where as a Procedure does not.
4 What is Database Trigger ?
A Database Trigger is procedure (set of SQL and PL/SQL statements) that is automatically executed as a result of an insert in,update to, or delete from a table.
5 What is a Procedure ?
A Procedure consist of a set of SQL and PL/SQL statements that are grouped together as a unit to solve a specific problem or perform a set of related tasks.
6 What is a Package ?
A Package is a collection of related procedures, functions, variables and other package constructs together as a unit in the database.
7 What are the uses of Database Trigger ?
Database triggers can be used to automatic data generation, audit data modifications, enforce complex Integrity constraints, and customize complex security authorizations.
8 What are the advantages of having a Package ?
Increased functionality (for example,global package variables can be declared and used by any proecdure in the package) and performance (for example all objects of the package are parsed compiled, and loaded into memory once)
1 With which function of summary item is the compute at options required?
percentage of total functions.
2 Why is it preferable to create a fewer no. of queries in the data model?
Because for each query, report has to open a separate cursor and has to rebind, execute and fetch data.
3 Why is a Where clause faster than a group filter or a format trigger?
Because, in a where clause the condition is applied during data retrieval than after retrieving the data.
4 Which parameter can be used to set read level consistency across multiple queries?
Read only.
5 Which of the two views should objects according to possession?
view by structure.
6 Which of the above methods is the faster method?
performing the calculation in the query is faster.
7 Where is the external query executed at the client or the server?
At the server.
8 Where is a procedure return in an external pl/sql library executed at the client or at the server?
At the client.
9 When do you use data parameter type?
When the value of a data parameter being passed to a called product is always the name of the record group defined in the current form. Data parameters are used to pass data to produts invoked with the run_product built-in subprogram.
10 When a form is invoked with call_form, Does oracle forms issues a save point?
Yes
11 What are the important difference between property clause and visual attributes?
Named visual attributes differ only font, color & pattern attributes, property clauses can contain this and any other properties. You can change the appearance of objects at run time by changing the named visual attributes programmatically , property clause assignments cannot be changed programmatically. When an object is inheriting from both a property clause and named visual attribute, the named visual attribute settings take precedence, and any visual attribute properties in the class are ignored.
12 What use of command line parameter cmd file?
It is a command line argument that allows you to specify a file that contain a set of arguments for r20run.
13 What is WHEN-Database-record trigger?
Fires when oracle forms first marks a record as an insert or an update. The trigger fires as soon as oracle forms determines through validation that the record should be processed by the next post or commit as an insert or update. c generally occurs only when the operators modifies the first item in the record, and after the operator attempts to navigate out of the item.
14 What is use of term?
The term file which key is correspond to which oracle report functions.
15 What is trigger associated with the timer?
When-timer-expired.
16 What is the use of transactional triggers?
Using transactional triggers we can control or modify the default functionality of the oracle forms.
17 What is the use of place holder column?
A placeholder column is used to hold calculated values at a specified place rather than allowing is to appear in the actual row where it has to appear.
18 What is the use of image_zoom built-in?
To manipulate images in image items.
19 What is the use of hidden column?
A hidden column is used to when a column has to embed into boilerplate text.
20 What is the use of break group?
A break group is used to display one record for one group ones. While multiple related records in other group can be displayed.
21 What is the remove on exit property?
For a modelless window, it determines whether oracle forms hides the window automatically when the operators navigates to an item in the another window.
22 What is the purpose of the product order option in the column property sheet?
To specify the order of individual group evaluation in a cross products.
23 What is the maximum no of chars the parameter can store?
The maximum no of chars the parameter can store is only valid for char parameters, which can be upto 64K. No parameters default to 23Bytes and Date parameter default to 7Bytes.
24 What is the main diff. bet. Reports 2.0 & Reports 2.5?
Report 2.5 is object oriented.
25 What is the frame & repeating frame?
A frame is a holder for a group of fields. A repeating frame is used to display a set of records when the no. of records that are to displayed is not known before.
26 What is the difference between OLE Server & Ole Container?
An Ole server application creates ole Objects that are embedded or linked in ole Containers ex. Ole servers are ms_word & ms_excel. OLE containers provide a place to store, display and manipulate objects that are created by ole server applications. Ex. oracle forms is an example of an ole Container.
27 What is the difference between object embedding & linking in Oracle forms?
In Oracle forms, Embedded objects become part of the form module, and linked objects are references from a form module to a linked source file.
28 What is the difference between boiler plat images and image items?
Boiler plate Images are static images (Either vector or bit map) that you import from the file system or database to use a graphical elements in your form, such as company logos and maps. Image items are special types of interface controls that store and display either vector or bitmap images. Like other items that store values, image items can be either base table items(items that relate directly to database columns) or control items. The definition of an image item is stored as part of the form module FMB and FMX files, but no image file is actually associated with an image item until the item is populate at run time.
29 What is the difference between $$DATE$$ & $$DBDATE$$ $$DBDATE$$ retrieves the current database date $$date$$ retrieves the current operating system date.
30 What is the diff. when Flex mode is mode on and when it is off?
When flex mode is on, reports automatically resizes the parent when the child is resized.
31 What is the diff. when confine mode is on and when it is off?
When confine mode is on, an object cannot be moved outside its parent in the layout.
32 What is the diff. bet. setting up of parameters in reports 2.0 reports 2.5?
LOVs can be attached to parameters in the reports 2.5 parameter form.
33 What is the advantage of the library?
Libraries provide a convenient means of storing client-side program units and sharing them among multiple applications. Once you create a library, you can attach it to any other form, menu, or library modules. When you can call library program units from triggers menu items commands and user named routine, you write in the modules to which you have attach the library. When a library attaches another library, program units in the first library can reference program units in the attached library. Library support dynamic loading-that is library program units are loaded into an application only when needed. This can significantly reduce the run-time memory requirements of applications.
34 What is term?
The term is terminal definition file that describes the terminal form which you are using r20run.
35 What is system.coordination_operation?
It represents the coordination causing event that occur on the master block in master-detail relation.
36 What is synchronize?
It is a terminal screen with the internal state of the form. It updates the screen display to reflect the information that oracle forms has in its internal representation of the screen.
37 What is strip sources generate options?
Removes the source code from the library file and generates a library files that contains only pcode. The resulting file can be used for final deployment, but can not be subsequently edited in the designer. ex. f45gen module=old_lib.pll userid=scott/tiger strip_source YES output_file
38 What is relation between the window and canvas views?
Canvas views are the back ground objects on which you place the interface items (Text items), check boxes, radio groups etc.,) and boilerplate objects (boxes, lines, images etc.,) that operators interact with us they run your form . Each canvas views displayed in a window.
39 What is pop list?
The pop list style list item appears initially as a single field (similar to a text item field). When the operator selects the list icon, a list of available choices appears.
40 What is new_form built-in?
When one form invokes another form by executing new_form oracle form exits the first form and releases its memory before loading the new form calling new form completely replace the first with the second. If there are changes pending in the first form, the operator will be prompted to save them before the new form is loaded.
41 What is lexical reference? How can it be created?
Lexical reference is place_holder for text that can be embedded in a sql statements. A lexical reference can be created using & before the column or parameter name.
42 What is forms_DDL?
Issues dynamic Sql statements at run time, including server side pl/SQl and DDL
43 What is difference between open_form and call_form?
when one form invokes another form by executing open_form the first form remains displayed, and operators can navigate between the forms as desired. when one form invokes another form by executing call_form, the called form is modal with respect to the calling form. That is, any windows that belong to the calling form are disabled, and operators cannot navigate to them until they first exit the called form.
44 What is bind reference and how can it be created?
Bind reference are used to replace the single value in sql, pl/sql statements a bind reference can be created using a (:) before a column or a parameter name.
45 What is an user exit used for?
A way in which to pass control (and possibly arguments ) form Oracle report to another Oracle products of 3 GL and then return control ( and ) back to Oracle reports.
46 What is an OLE?
Object Linking & Embedding provides you with the capability to integrate objects from many Ms-Windows applications into a single compound document creating integrated applications enables you to use the features form .
47 What is an object group?
An object group is a container for a group of objects; you define an object group when you want to package related objects, so that you copy or reference them in other modules.
48 What is an anchoring object & what is its use?
An anchoring object is a print condition object which used to explicitly or implicitly anchor other objects to itself.
49 What is a User_exit?
Calls the user exit named in the user_exit_string. Invokes a 3Gl program by name which has been properly linked into your current oracle forms executable.
50 What is a timer?
Timer is an "internal time clock" that you can programmatically create to perform an action each time the timer expires.
51 What is a Text_io Package?
It allows you to read and write information to a file in the file system.
52 What is a text list?
The text list style list item appears as a rectangular box which displays the fixed number of values. When the text list contains values that can not be displayed, a vertical scroll bar appears, allowing the operator to view and select undisplayed values.
53 What is a property clause?
A property clause is a named object that contains a list of properties and their settings. Once you create a property clause you can base other object on it. An object based on a property can inherit the setting of any property in the clause that makes sense for that object.
54 What is a physical page ? & What is a logical page ?
A physical page is a size of a page. That is output by the printer. The logical page is the size of one page of the actual report as seen in the Previewer.
55 What is a library?
A library is a collection of subprograms including user named procedures, functions and packages.
56 What is a difference between pre-select and pre-query?
Fires during the execute query and count query processing after oracle forms constructs the select statement to be issued, but before the statement is actually issued. The pre-query trigger fires just before oracle forms issues the select statement to the database after the operator as define the example records by entering the query criteria in enter query mode. Pre-query trigger fires before pre-select trigger.
57 What is a combo box?
A combo box style list item combines the features found in list and text item. Unlike the pop list or the text list style list items, the combo box style list item will both display fixed values and accept one operator entered value.
58 What does the term panel refer to with regard to pages?
A panel is the no. of physical pages needed to print one logical page.
59 What are visual attributes?
Visual attributes are the font, color, pattern proprieties that you set for form and menu objects that appear in your application interface.
60 What are three panes that appear in the run time pl/sql interpreter?
1.Source pane. 2. interpreter pane. 3. Navigator pane.
Regards
B RANGARAJAN -
OnPlus Top 10 and Roadmap - What do you think?
Thank you all so much for your great feedback! During the past few months, we’ve met and talked to quite a bit of you on shows, events and here on our Support Community, and listened to your comments and requests.
Following these discussions and the feedback given on our previous announcement on our Top 10 list of features (here), we internally got together to think of ways on how to address those in our roadmap, so we’re happy to share our plan with you here.
And as always – comment away! You’re feedback is most valuable.
Coming soon…
Here are the features we have planned for the next few months out…
More supported platforms – as you requested, we’re looking into adding support for more Cisco products. Mainly we are looking at adding support for the following:
Catalyst 2K and 3K Switches
Additional ISR G2 platforms
Co-Branded OnPlus – many of have told us how cool it would be if you could demonstrate your managed services to your existing or prospective customer, with your logo on it, so you can create more of an identity for your company. In the next few months, we’ll be working on a Co-Branded service. You will be able to upload your logo to OnPlus, and we will populate that on the portal and in OnPlus reports.
Telnet/SSH – this feature was on our previous Top 10 list, and we kept it here, not only because many of you asked for it, but also since we’ll be adding more Cisco devices with a CLI.This feature will enable you to create, through OnPlus a Telnet or SSH tunnel directly into the device you’d like to manage, with the same experience as you could connect to a device’s GUI.
Customer Access to OnPlus – soon you’ll be able to invite your customers to (only) view their accounts on OnPlus, so they can stay up-to-date with your service.
Multi-site/network management – many of you have customers with multiple sites, but now, each is represented as a separate site.
We’ll be working on a more consolidated view, where you’ll be able to manage customers with multiple networks in an intuitive manner. More to come on this in the future…
Wireless Practice – reports dedicated to the wireless network in your customer networks will be coming as part of an offering linked to new Cisco Access Points coming in the spring.
Device Credentials Test – when you enter credentials for a device in its window in OnPlus – we’ll test them for you and let you know if they’re correct or not.
Turn off monitors on selected devices – Since many of you use an RMM, we’ve heard this request quite a bit – can you turn off the monitors on only a selected number of devices or category? This feature will offer you the ability to configure which devices will, or will not be monitored.
More on PSA integration – we’re looking at a deeper integration both with Autotask and Connectwise, mainly in the ticketing system:
Upload device configuration into the ticket – for a failed device, we will upload the last device configuration to the ticket, for your convenience.
Embed a device window link in a ticket – in any ticket that’s opened, a link to the failing device’s window wll be provided so you can open it directly through your PSA.
ISP Speed test – here you will quickly be able to gauge how your service provider is doing, as more means to troubleshoot from afar.
Other features coming in the pipeline:
Here are some more features we will be looking into in the upcoming months, but will be noticeable only later on. Some have remained from our original list, and others have been added following your feedback.
Network Assessments - placing the ON100 network agent at a potential customer site and running a network assessment can give you enough information about that site, in order to give your prospective customer a proposal. This could be especially useful when using a tablet at that customer’s site, and showing the results on the fly.
Network Health dashboard – a dedicated health tab will provide you with details regarding your customer network, as well as some more troubleshooting tools you can utilize for further investigation
OnPlus recommendations - receive recommendations from OnPlus that pertain to the devices on the networks you manage – from notifications on configuration adjustments to promotions and suggestions. This could be a great way to initiate a discussion with your customer on additions, changes, replacements and much more.
RMM Integration - we are looking closely at integrating functionality with the some Remote Management and Monitoring tools, mainly Level Platforms and Kaseya. More on that to follow…
IPv6 – for networks that have already adopted, or are beginning to adopt IPv6 - OnPlus would discover, assess, manage and advise you, same as you know it today.
Managing different subnets and VLANs – we are looking at ways to discover other subnets and VLANs other than the one that the network agent is on.
Access privileges to agents - when adding a sub-agent in your account on the OnPlus portal, you'd be able to assign different privileges for each agent, per customer. Meaning, if agent 'John' supports customers A, B and C, and agent 'Jane' support customers X, Y and Z; John would have Read-Write access to only A, B and C but Read-Only access to X, Y and Z and vice versa for Jane. It would be up to the master agent to determine this privilege allocation
More integration with Cisco Services – through OnPlus you’d be able to see your active Service Requests and RMAs and their history, and also file for an RMA through OnPlus.
Extension of Service contracts and Warranty – we’re looking at ways for you to extend your service contracts and warranties through OnPlus, without the need to call Cisco or your distributor.
As always, please don’t hesitate to let us know your comments, thoughts and wishes. We listen to everything!
Thanks,
The OnPlus TeamAs a T&M and managed services provider for the small business market (average business customer has 1 to 5 locations and anywhere between 2 and 50 total devices, including computers and printers, per location), we are looking for a drop-in one-box does-it-all type of management and monitoring device. With this said for perspective, here is the my reaction to the proposed Top 10 list.
"More supported platforms – " The full line of Cisco "Built for Small Business" Routers/Firewalls, Switches, Unified Communications, and Wireless Access Points should be supported fully by OnPlus. These devices should be able to store their configuration files and firmware on the device. Support for these devices should take precedence over supporting Cisco Enterprise Grade hardware because the OnPlus device is billed as a small business network management product.
"Co-Branded OnPlus –" This is a good idea, but additional reporting capabilities and full line of Cisco "Built for Small Business" product support should take priority over Co-Branding.
Telnet/SSH – I'm not sure I understand this is a new feature. We are currently able to use the generic connection capability to connect to Telnet and SSH.
Customer Access to OnPlus – We should be able to provide customers with either read-only or full-control access to their network as our contracts stipulate. We have some customers in both categories.
Multi-site/network management – This feature will be very helpful to our customers that have some on-staff IT support.
We’ll be working on a more consolidated view, where you’ll be able to manage customers with multiple networks in an intuitive manner. More to come on this in the future… -- Waiting to see the details
Wireless Practice – Good to know.
Device Credentials Test – We are looking forward to receiving instant feedback about whether a device has proper credentials (please include snmp in the credentials test) or not.
Turn off monitors on selected devices – Yeah!!
More on PSA integration – I'd like to see integration with Spiceworks in addition to the items below.
Upload device configuration into the ticket – for a failed device, we will upload the last device configuration to the ticket, for your convenience.
Embed a device window link in a ticket – in any ticket that’s opened, a link to the failing device’s window wll be provided so you can open it directly through your PSA.
ISP Speed test – here you will quickly be able to gauge how your service provider is doing, as more means to troubleshoot from afar.
There are some things that are important to our customers that aren't on the top 10 list. Here are some of those items.
A. More network health reporting options and graphs. It would be nice to be able to run a report that prints out the network Latency and Jitter and Packet Loss metrics that show up on the OnPlus' Wan Monitor Tab. It would also be nice to include an accurate WAN speed graph in the same report. It would also be nice to run reports on supported switches that show packet errors, Spanning Tree misconfiguration, etc.
B. Configure the OnPlus Device to act as a syslog server
C. Im in agreement with some of the thoughts above about being able to capture more WMI data and/or event log/syslog data for Windows/Linux/MAC devices and provide some reporting options for that data. Our clients have a limited budget, so anything we can provide for them in a single drop-in appliance in the realm of network and device management is appreciated.
D. Voicemail backup mentioned above is a great idea
E. Support for Spiceworks Ticketing/Reporting Integration
F. Additional support for non Cisco Devices -- Most of our cleints have heterogenous networks, so being able to support devices from multiple vendors is important. Being able to back up the network config of any SNMP capable network device could be very beneficial.
G. Selective VLAN listening scope from the OnPlus. Reduces the amount of switch configuration needed to deploy the OnPlus in environments where we only need to monitor devices on some VLANS.
H. Selective global enablling or disabling of remote device connectivity for a customer's site or sites.
I. Ability to connect to multiple remote management sessions concurrently from the OnPlus. This and #H could work together to enable a range of remote connectivity options between maybe 0 and 5 concurrent sessions and could possibly be a factor in service level pricing to the customer. And, a report could be created that showed the customer the times when someone accessed their devices remotely through the OnPlus.
As for general direction for the OnPlus --- I hope it doesn't go down the road of only or primarily being a management device for Cisco Enterprise IOS based products. There appear to already be specialized Cisco Management products available for the Enterprise IOS based line of products. I want to see OnPlus continue to support Service Providers who have clients on the smaller side of the SMB market. In the part of the country where we work, the SMB clients, simply don't have resources for Cisco Enterprise IOS products, so it is great be able to offer a low cost drop-in appliance that fulfills general network and device monitoring and management needs. -
Why am I having less free memory? What is active and inactive memory?
Hi, I own a MBP penryn model. Right now, when I look in the activity monitor (or istat pro), it tells me that my free ram is 302mb, 56mb inactive, 816mb active, and 166mb wired. Why am I only having 300mb free if Im only using safari at the moment and not running anything else? Everytime I start up my notebook, the free space is around 1.70gb free at least. But why do I have that little bit of free space after a long time use?
Sorry if this is a newbie question, im really new to this.
Message was edited by: djvic87About OS X Memory Management and Usage
Reading system memory usage in Activity Monitor
Memory Management in Mac OS X
Performance Guidelines- Memory Management in Mac OS X
A detailed look at memory usage in OS X
Understanding top output in the Terminal
The amount of available RAM for applications is the sum of Free RAM and Inactive RAM. This will change as applications are opened and closed or change from active to inactive status. The Swap figure represents an estimate of the total amount of swap space required for VM if used, but does not necessarily indicate the actual size of the existing swap file. If you are really in need of more RAM that would be indicated by how frequently the system uses VM. If you open the Terminal and run the top command at the prompt you will find information reported on Pageins () and Pageouts (). Pageouts () is the important figure. If the value in the parentheses is 0 (zero) then OS X is not making instantaneous use of VM which means you have adequate physical RAM for the system with the applications you have loaded. If the figure in parentheses is running positive and your hard drive is constantly being used (thrashing) then you need more physical RAM.
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