Cost of sql statement
Hi all.
Database is oracle 9i server ibm-aix
Is there any way to analyze sql statement cost before apply it in to production system.
Like developers wrote some sql statements ..now before release them in to production ..i need to check
these..and take cost of the sql statement …like these are good one or badly written ... how to check it …any way any tool ..?
any idea...
Database is oracle 9i server ibm-aix
Is there any way to analyze sql statement cost before apply it in to production system. Run the query on your dev/test systems?
Run an explain plan?
Read Jonathan Lewis' book on Cost Based Oracle - the Fundamentals?
Christopher Lawson's book? Cary Millsap's book? Gaja Krishna Vaidyanatha & al's book?
Like developers wrote some sql statements ..now before release them in to production ..i need to check
these..and take cost of the sql statement …like these are good one or badly written ... how to check it …any way any tool ..?There's an excellent tool - with proper use, there's virtually no problem it cannot
solve in an Oracle system (or any other one for that matter!), it's called
a brain - with knowledge of how Oracle works and a bit of study, it
really is pretty cool.
HTH,
Paul...
When asking database related questions, please give other posters
some clues, like OS (with version), version of Oracle being used and DDL.
Other trivia such as CPU, RAM + Disk configuration might also be useful.
The exact text and/or number of error messages is useful (!= "it didn't work!"). Thanks.
Furthermore, as a courtesy to those who spend time analysing and attempting to help,
please do not top post and do try to trim your replies!
Similar Messages
-
Trying to find a specific SQL statement to determine its cost
If an sql statement is executed will it ALWAYS show up in the awrrpt report? (10g)
I am a developer DBA and was handed an SQL statement by the production DBA as being a problem during a specific timeframe within the past hour.
That statement does not show up in v$LongOps (although other older ones are) nor does it appear in v$sqltext and is not in the awrrpt even when I run the report for the entire day.
Any other ideas or can I safely broach the Production DBA without looking like an idiot?!!
ThanksI am not using awrrpt report but for sure if your statement has been executed it must have been in v$sqltext but maybe it did not stay very long because it has been rarely executed and replaced in the shared pool by other SQL statements that have been more executed.
You could setup a copy of your production database on a similar host and run the statement several time in single user mode to check at least its performance in single user with sql_trace=TRUE and tkprof.
If your statement is SELECT your could also execute it in your production database and check at the sametime v$sqltext and also v$sqlarea, especially for:
DISK_READS NUMBER Sum of the number of disk reads over all child cursors
BUFFER_GETS NUMBER Sum of buffer gets over all child cursors
USER_IO_WAIT_TIME NUMBER User I/O Wait Time (in microseconds)
CPU_TIME NUMBER CPU time (in microseconds) used by this cursor for parsing, executing, and fetching
ELAPSED_TIME NUMBER Elapsed time (in microseconds) used by this cursor for parsing, executing, and fetching -
HOW TO: Post a SQL statement tuning request - template posting
This post is not a question, but similar to Rob van Wijk's "When your query takes too long ..." post should help to improve the quality of the requests for SQL statement tuning here on OTN.
On the OTN forum very often tuning requests about single SQL statements are posted, but the information provided is rather limited, and therefore it's not that simple to provide a meaningful advice. Instead of writing the same requests for additional information over and over again I thought I put together a post that describes how a "useful" post for such a request should look like and what information it should cover.
I've also prepared very detailed step-by-step instructions how to obtain that information on my blog, which can be used to easily gather the required information. It also covers again the details how to post the information properly here, in particular how to use the \ tag to preserve formatting and get a fixed font output:
http://oracle-randolf.blogspot.com/2009/02/basic-sql-statement-performance.html
So again: This post here describes how a "useful" post should look like and what information it ideally covers. The blog post explains in detail how to obtain that information.
In the future, rather than requesting the same additional information and explaining how to obtain it, I'll simply refer to this HOW TO post and the corresponding blog post which describes in detail how to get that information.
*Very important:*
Use the \ tag to enclose any output that should have its formatting preserved as shown below.
So if you want to use fixed font formatting that preserves the spaces etc., do the following:
\ This preserves formatting
\And it will look like this:
This preserves formatting
. . .Your post should cover the following information:
1. The SQL and a short description of its purpose
2. The version of your database with 4-digits (e.g. 10.2.0.4)
3. Optimizer related parameters
4. The TIMING and AUTOTRACE output
5. The EXPLAIN PLAN output
6. The TKPROF output snippet that corresponds to your statement
7. If you're on 10g or later, the DBMS_XPLAN.DISPLAY_CURSOR output
The above mentioned blog post describes in detail how to obtain that information.
Your post should have a meaningful subject, e.g. "SQL statement tuning request", and the message body should look similar to the following:
*-- Start of template body --*
The following SQL statement has been identified to perform poorly. It currently takes up to 10 seconds to execute, but it's supposed to take a second at most.
This is the statement:
select
from
t_demo
where
type = 'VIEW'
order by
id;It should return data from a table in a specific order.
The version of the database is 11.1.0.7.
These are the parameters relevant to the optimizer:
SQL>
SQL> show parameter optimizer
NAME TYPE VALUE
optimizer_capture_sql_plan_baselines boolean FALSE
optimizer_dynamic_sampling integer 2
optimizer_features_enable string 11.1.0.7
optimizer_index_caching integer 0
optimizer_index_cost_adj integer 100
optimizer_mode string ALL_ROWS
optimizer_secure_view_merging boolean TRUE
optimizer_use_invisible_indexes boolean FALSE
optimizer_use_pending_statistics boolean FALSE
optimizer_use_sql_plan_baselines boolean TRUE
SQL>
SQL> show parameter db_file_multi
NAME TYPE VALUE
db_file_multiblock_read_count integer 8
SQL>
SQL> show parameter db_block_size
NAME TYPE VALUE
db_block_size integer 8192
SQL>
SQL> show parameter cursor_sharing
NAME TYPE VALUE
cursor_sharing string EXACT
SQL>
SQL> column sname format a20
SQL> column pname format a20
SQL> column pval2 format a20
SQL>
SQL> select
2 sname
3 , pname
4 , pval1
5 , pval2
6 from
7 sys.aux_stats$;
SNAME PNAME PVAL1 PVAL2
SYSSTATS_INFO STATUS COMPLETED
SYSSTATS_INFO DSTART 01-30-2009 16:25
SYSSTATS_INFO DSTOP 01-30-2009 16:25
SYSSTATS_INFO FLAGS 0
SYSSTATS_MAIN CPUSPEEDNW 494,397
SYSSTATS_MAIN IOSEEKTIM 10
SYSSTATS_MAIN IOTFRSPEED 4096
SYSSTATS_MAIN SREADTIM
SYSSTATS_MAIN MREADTIM
SYSSTATS_MAIN CPUSPEED
SYSSTATS_MAIN MBRC
SYSSTATS_MAIN MAXTHR
SYSSTATS_MAIN SLAVETHR
13 rows selected.Here is the output of EXPLAIN PLAN:
SQL> explain plan for
2 -- put your statement here
3 select
4 *
5 from
6 t_demo
7 where
8 type = 'VIEW'
9 order by
10 id;
Explained.
Elapsed: 00:00:00.01
SQL>
SQL> select * from table(dbms_xplan.display);
PLAN_TABLE_OUTPUT
Plan hash value: 1390505571
| Id | Operation | Name | Rows | Bytes | Cost (%CPU)| Time |
| 0 | SELECT STATEMENT | | 1 | 60 | 0 (0)| 00:00:01 |
| 1 | TABLE ACCESS BY INDEX ROWID| T_DEMO | 1 | 60 | 0 (0)| 00:00:01 |
|* 2 | INDEX RANGE SCAN | IDX_DEMO | 1 | | 0 (0)| 00:00:01 |
Predicate Information (identified by operation id):
2 - access("TYPE"='VIEW')
14 rows selected.Here is the output of SQL*Plus AUTOTRACE including the TIMING information:
SQL> rem Set the ARRAYSIZE according to your application
SQL> set autotrace traceonly arraysize 100
SQL> select
2 *
3 from
4 t_demo
5 where
6 type = 'VIEW'
7 order by
8 id;
149938 rows selected.
Elapsed: 00:00:02.21
Execution Plan
Plan hash value: 1390505571
| Id | Operation | Name | Rows | Bytes | Cost (%CPU)| Time |
| 0 | SELECT STATEMENT | | 1 | 60 | 0 (0)| 00:00:01 |
| 1 | TABLE ACCESS BY INDEX ROWID| T_DEMO | 1 | 60 | 0 (0)| 00:00:01 |
|* 2 | INDEX RANGE SCAN | IDX_DEMO | 1 | | 0 (0)| 00:00:01 |
Predicate Information (identified by operation id):
2 - access("TYPE"='VIEW')
Statistics
0 recursive calls
0 db block gets
149101 consistent gets
800 physical reads
196 redo size
1077830 bytes sent via SQL*Net to client
16905 bytes received via SQL*Net from client
1501 SQL*Net roundtrips to/from client
0 sorts (memory)
0 sorts (disk)
149938 rows processed
SQL>
SQL> disconnect
Disconnected from Oracle Database 11g Enterprise Edition Release 11.1.0.7.0 - Production
With the Partitioning, OLAP, Data Mining and Real Application Testing optionsThe TKPROF output for this statement looks like the following:
TKPROF: Release 11.1.0.7.0 - Production on Mo Feb 23 10:23:08 2009
Copyright (c) 1982, 2007, Oracle. All rights reserved.
Trace file: orcl11_ora_3376_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
from
t_demo
where
type = 'VIEW'
order by
id
call count cpu elapsed disk query current rows
Parse 1 0.00 0.00 0 0 0 0
Execute 1 0.00 0.00 0 0 0 0
Fetch 1501 0.53 1.36 800 149101 0 149938
total 1503 0.53 1.36 800 149101 0 149938
Misses in library cache during parse: 0
Optimizer mode: ALL_ROWS
Parsing user id: 88
Rows Row Source Operation
149938 TABLE ACCESS BY INDEX ROWID T_DEMO (cr=149101 pr=800 pw=0 time=60042 us cost=0 size=60 card=1)
149938 INDEX RANGE SCAN IDX_DEMO (cr=1881 pr=1 pw=0 time=0 us cost=0 size=0 card=1)(object id 74895)
Elapsed times include waiting on following events:
Event waited on Times Max. Wait Total Waited
---------------------------------------- Waited ---------- ------------
SQL*Net message to client 1501 0.00 0.00
db file sequential read 800 0.05 0.80
SQL*Net message from client 1501 0.00 0.69
********************************************************************************The DBMS_XPLAN.DISPLAY_CURSOR output:
SQL> -- put your statement here
SQL> -- use the GATHER_PLAN_STATISTICS hint
SQL> -- if you're not using STATISTICS_LEVEL = ALL
SQL> select /*+ gather_plan_statistics */
2 *
3 from
4 t_demo
5 where
6 type = 'VIEW'
7 order by
8 id;
149938 rows selected.
Elapsed: 00:00:02.21
SQL>
SQL> select * from table(dbms_xplan.display_cursor(null, null, 'ALLSTATS LAST'));
PLAN_TABLE_OUTPUT
SQL_ID d4k5acu783vu8, child number 0
select /*+ gather_plan_statistics */ * from t_demo
where type = 'VIEW' order by id
Plan hash value: 1390505571
| Id | Operation | Name | Starts | E-Rows | A-Rows | A-Time | Buffers | Reads |
| 0 | SELECT STATEMENT | | 1 | | 149K|00:00:00.02 | 149K| 1183 |
| 1 | TABLE ACCESS BY INDEX ROWID| T_DEMO | 1 | 1 | 149K|00:00:00.02 | 149K| 1183 |
|* 2 | INDEX RANGE SCAN | IDX_DEMO | 1 | 1 | 149K|00:00:00.02 | 1880 | 383 |
Predicate Information (identified by operation id):
2 - access("TYPE"='VIEW')
20 rows selected.I'm looking forward for suggestions how to improve the performance of this statement.
*-- End of template body --*
I'm sure that if you follow these instructions and obtain the information described, post them using a proper formatting (don't forget about the \ tag) you'll receive meaningful advice very soon.
So, just to make sure you didn't miss this point:Use proper formatting!
If you think I missed something important in this sample post let me know so that I can improve it.
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/Alex Nuijten wrote:
...you missed the proper formatting of the Autotrace section ;-)Alex,
can't reproduce, does it still look unformatted? Or are you simply kidding? :-)
Randolf
PS: Just noticed that it actually sometimes doesn't show the proper formatting although the code tags are there. Changing to the \ tag helped in this case, but it seems to be odd.
Edited by: Randolf Geist on Feb 23, 2009 11:28 AM
Odd behaviour of forum software -
Multiple Executions Plans for the same SQL statement
Dear experts,
awrsqrpt.sql is showing multiple executions plans for a single SQL statement. How is it possible that one SQL statement will have multiple Executions Plans within the same AWR report.
Below is the awrsqrpt's output for your reference.
WORKLOAD REPOSITORY SQL Report
Snapshot Period Summary
DB Name DB Id Instance Inst Num Release RAC Host
TESTDB 2157605839 TESTDB1 1 10.2.0.3.0 YES testhost1
Snap Id Snap Time Sessions Curs/Sess
Begin Snap: 32541 11-Oct-08 21:00:13 248 141.1
End Snap: 32542 11-Oct-08 21:15:06 245 143.4
Elapsed: 14.88 (mins)
DB Time: 12.18 (mins)
SQL Summary DB/Inst: TESTDB/TESTDB1 Snaps: 32541-32542
Elapsed
SQL Id Time (ms)
51szt7b736bmg 25,131
Module: SQL*Plus
UPDATE TEST SET TEST_TRN_DAY_CL = (SELECT (NVL(ACCT_CR_BAL,0) + NVL(ACCT_DR_BAL,
0)) FROM ACCT WHERE ACCT_TRN_DT = (:B1 ) AND TEST_ACC_NB = ACCT_ACC_NB(+)) WHERE
TEST_BATCH_DT = (:B1 )
SQL ID: 51szt7b736bmg DB/Inst: TESTDB/TESTDB1 Snaps: 32541-32542
-> 1st Capture and Last Capture Snap IDs
refer to Snapshot IDs witin the snapshot range
-> UPDATE TEST SET TEST_TRN_DAY_CL = (SELECT (NVL(ACCT_CR_BAL,0) + NVL(AC...
Plan Hash Total Elapsed 1st Capture Last Capture
# Value Time(ms) Executions Snap ID Snap ID
1 2960830398 25,131 1 32542 32542
2 3834848140 0 0 32542 32542
Plan 1(PHV: 2960830398)
Plan Statistics DB/Inst: TESTDB/TESTDB1 Snaps: 32541-32542
-> % Total DB Time is the Elapsed Time of the SQL statement divided
into the Total Database Time multiplied by 100
Stat Name Statement Per Execution % Snap
Elapsed Time (ms) 25,131 25,130.7 3.4
CPU Time (ms) 23,270 23,270.2 3.9
Executions 1 N/A N/A
Buffer Gets 2,626,166 2,626,166.0 14.6
Disk Reads 305 305.0 0.3
Parse Calls 1 1.0 0.0
Rows 371,735 371,735.0 N/A
User I/O Wait Time (ms) 564 N/A N/A
Cluster Wait Time (ms) 0 N/A N/A
Application Wait Time (ms) 0 N/A N/A
Concurrency Wait Time (ms) 0 N/A N/A
Invalidations 0 N/A N/A
Version Count 2 N/A N/A
Sharable Mem(KB) 26 N/A N/A
Execution Plan
| Id | Operation | Name | Rows | Bytes | Cost (%CPU)| Time |
| 0 | UPDATE STATEMENT | | | | 1110 (100)| |
| 1 | UPDATE | TEST | | | | |
| 2 | TABLE ACCESS FULL | TEST | 116K| 2740K| 1110 (2)| 00:00:14 |
| 3 | TABLE ACCESS BY INDEX ROWID| ACCT | 1 | 26 | 5 (0)| 00:00:01 |
| 4 | INDEX RANGE SCAN | ACCT_DT_ACC_IDX | 1 | | 4 (0)| 00:00:01 |
Plan 2(PHV: 3834848140)
Plan Statistics DB/Inst: TESTDB/TESTDB1 Snaps: 32541-32542
-> % Total DB Time is the Elapsed Time of the SQL statement divided
into the Total Database Time multiplied by 100
Stat Name Statement Per Execution % Snap
Elapsed Time (ms) 0 N/A 0.0
CPU Time (ms) 0 N/A 0.0
Executions 0 N/A N/A
Buffer Gets 0 N/A 0.0
Disk Reads 0 N/A 0.0
Parse Calls 0 N/A 0.0
Rows 0 N/A N/A
User I/O Wait Time (ms) 0 N/A N/A
Cluster Wait Time (ms) 0 N/A N/A
Application Wait Time (ms) 0 N/A N/A
Concurrency Wait Time (ms) 0 N/A N/A
Invalidations 0 N/A N/A
Version Count 2 N/A N/A
Sharable Mem(KB) 26 N/A N/A
Execution Plan
| Id | Operation | Name | Rows | Bytes | Cost (%CPU)| Time |
| 0 | UPDATE STATEMENT | | | | 2 (100)| |
| 1 | UPDATE | TEST | | | | |
| 2 | TABLE ACCESS BY INDEX ROWID| TEST | 1 | 28 | 2 (0)| 00:00:01 |
| 3 | INDEX RANGE SCAN | TEST_DT_IND | 1 | | 1 (0)| 00:00:01 |
| 4 | TABLE ACCESS BY INDEX ROWID| ACCT | 1 | 26 | 4 (0)| 00:00:01 |
| 5 | INDEX RANGE SCAN | INDX_ACCT_DT | 1 | | 3 (0)| 00:00:01 |
Full SQL Text
SQL ID SQL Text
51szt7b736bm UPDATE TEST SET TEST_TRN_DAY_CL = (SELECT (NVL(ACCT_CR_BAL, 0) +
NVL(ACCT_DR_BAL, 0)) FROM ACCT WHERE ACCT_TRN_DT = (:B1 ) AND PB
RN_ACC_NB = ACCT_ACC_NB(+)) WHERE TEST_BATCH_DT = (:B1 )Your input is highly appreciated.
Thanks for taking your time in answering my question.
RegardsOracle Lover3 wrote:
Dear experts,
awrsqrpt.sql is showing multiple executions plans for a single SQL statement. How is it possible that one SQL statement will have multiple Executions Plans within the same AWR report.If you're using bind variables and you've histograms on your columns which can be created by default in 10g due to the "SIZE AUTO" default "method_opt" parameter of DBMS_STATS.GATHER__STATS it is quite normal that you get different execution plans for the same SQL statement. Depending on the values passed when the statement is hard parsed (this feature is called "bind variable peeking" and enabled by default since 9i) an execution plan is determined and re-used for all further executions of the same "shared" SQL statement.
If now your statement ages out of the shared pool or is invalidated due to some DDL or statistics gathering activity it will be re-parsed and again the values passed in that particular moment will determine the execution plan. If you have skewed data distribution and a histogram in place that reflects that skewness you might get different execution plans depending on the actual values used.
Since this "flip-flop" behaviour can sometimes be counter-productive if you're unlucky and the values used to hard parse the statement leading to a plan that is unsuitable for the majority of values used afterwards, 11g introduced the "adaptive" cursor sharing that attempts to detect such a situation and can automatically re-evaluate the execution plan of the statement.
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/ -
hi
We are getting the following sql statement dump, and i am not able to understand what should be done here, would anyone please advise
Registered qb: SEL$1 0xc4c8a150 (PARSER)
QUERY BLOCK SIGNATURE
signature (): qb_name=SEL$1 nbfros=1 flg=0
fro(0): flg=4 objn=272221 hint_alias="BSAD"@"SEL$1"
SPM: statement not found in SMB
SPM: statement not a candidate for auto-capture
Automatic degree of parallelism (ADOP)
Automatic degree of parallelism is disabled: Parameter.
PM: Considering predicate move-around in query block SEL$1 (#0)
Predicate Move-Around (PM)
PM: PM bypassed: disabled due to star transformation.
OPTIMIZER INFORMATION
----- Current SQL Statement for this session (sql_id=82mdu08rbcnyy) -----
EXPLAIN PLAN SET STATEMENT_ID='SAP_STMT' FOR /*+ 142235 */ SELECT "MANDT" , "BUKRS" , "KUNNR" , "UMSKS" , "UMSKZ" , "AUGDT" , "AUGBL" , "ZUONR"
, "GJAHR" , "BELNR" , "BUZEI" , "BUDAT" , "BLDAT" , "CPUDT" , "WAERS" , "XBLNR" , "BLART" , "MONAT" , "BSCHL" , "ZUMSK" , "SHKZG" , "GSBER" ,
"MWSKZ" , "DMBTR" , "WRBTR" , "MWSTS" , "WMWST" , "BDIFF" , "BDIF2" , "SGTXT" , "PROJN" , "AUFNR" , "ANLN1" , "ANLN2" , "SAKNR" , "HKONT" , "FK
ONT" , "FILKD" , "ZFBDT" , "ZTERM" , "ZBD1T" , "ZBD2T" , "ZBD3T" , "ZBD1P" , "ZBD2P" , "SKFBT" , "SKNTO" , "WSKTO" , "ZLSCH" , "ZLSPR" , "ZBFIX
" , "HBKID" , "BVTYP" , "REBZG" , "REBZJ" , "REBZZ" , "SAMNR" , "ANFBN" , "ANFBJ" , "ANFBU" , "ANFAE" , "MANSP" , "MSCHL" , "MADAT" , "MANST" ,
"MABER" , "XNETB" , "XANET" , "XCPDD" , "XINVE" , "XZAHL" , "MWSK1" , "DMBT1" , "WRBT1" , "MWSK2" , "DMBT2" , "WRBT2" , "MWSK3" , "DMBT3" , "W
RBT3" , "BSTAT" , "VBUND" , "VBELN" , "REBZT" , "INFAE" , "STCEG" , "EGBLD" , "EGLLD" , "RSTGR" , "XNOZA" , "VERTT" , "VERTN" , "VBEWA" , "WVER
W" , "PROJK" , "FIPOS" , "NPLNR" , "AUFPL" , "APLZL" , "XEGDR" , "DMBE2" , "DMBE3" , "DMB21" , "DMB22" , "DMB23" , "DMB31" , "DMB32" , "DMB33"
, "BDIF3" , "XRAGL" , "UZAWE" , "XSTOV" , "MWST2" , "MWST3" , "SKNT2" , "SKNT3" , "XREF1" , "XREF2" , "XARCH" , "PSWSL" , "PSWBT" , "LZBKZ" , "
LANDL" , "IMKEY" , "VBEL2" , "VPOS2" , "POSN2" , "ETEN2" , "FISTL" , "GEBER" , "DABRZ" , "XNEGP" , "KOSTL" , "RFZEI" , "KKBER" , "EMPFB" , "PRC
TR" , "XREF3" , "QSSKZ" , "ZINKZ" , "DTWS1" , "DTWS2" , "DTWS3" , "DTWS4" , "XPYPR" , "KIDNO" , "ABSBT" , "CCBTC" , "PYCUR" , "PYAMT" , "BUPLA"
, "SECCO" , "CESSION_KZ" , "PPDIFF" , "PPDIF2" , "PPDIF3" , "KBLNR" , "KBLPOS" , "GRANT_NBR" , "GMVKZ" , "SRTYPE" , "LOTKZ" , "FKBER" , "INTRE
NO" , "PPRCT" , "BUZID" , "AUGGJ" , "HKTID" , "BUDGET_PD" , "KONTT" , "KONTL" , "UEBGDAT" , "VNAME" , "EGRUP" , "BTYPE" , "PROPMANO" , "YYSTORE
" , "YYDELGRP" , "YYBOLNR" FROM "BSAD" WHERE "MANDT" = :A0 AND "KUNNR" IN ( :A1 , :A2 , :A3 , :A4 , :A5 ) AND "BUKRS" = :A6 AND "AUGDT" = :A7
user_id=27 user_name=SAPSR3 module=RSXPLORA action=7093
sql_id=82mdu08rbcnyy plan_hash_value=1162638466 problem_type=3
----- Current SQL Statement for this session (sql_id=82mdu08rbcnyy) -----
EXPLAIN PLAN SET STATEMENT_ID='SAP_STMT' FOR /*+ 142235 */ SELECT "MANDT" , "BUKRS" , "KUNNR" , "UMSKS" , "UMSKZ" , "AUGDT" , "AUGBL" , "ZUONR"
, "GJAHR" , "BELNR" , "BUZEI" , "BUDAT" , "BLDAT" , "CPUDT" , "WAERS" , "XBLNR" , "BLART" , "MONAT" , "BSCHL" , "ZUMSK" , "SHKZG" , "GSBER" ,
"MWSKZ" , "DMBTR" , "WRBTR" , "MWSTS" , "WMWST" , "BDIFF" , "BDIF2" , "SGTXT" , "PROJN" , "AUFNR" , "ANLN1" , "ANLN2" , "SAKNR" , "HKONT" , "FK
ONT" , "FILKD" , "ZFBDT" , "ZTERM" , "ZBD1T" , "ZBD2T" , "ZBD3T" , "ZBD1P" , "ZBD2P" , "SKFBT" , "SKNTO" , "WSKTO" , "ZLSCH" , "ZLSPR" , "ZBFIX
" , "HBKID" , "BVTYP" , "REBZG" , "REBZJ" , "REBZZ" , "SAMNR" , "ANFBN" , "ANFBJ" , "ANFBU" , "ANFAE" , "MANSP" , "MSCHL" , "MADAT" , "MANST" ,
"MABER" , "XNETB" , "XANET" , "XCPDD" , "XINVE" , "XZAHL" , "MWSK1" , "DMBT1" , "WRBT1" , "MWSK2" , "DMBT2" , "WRBT2" , "MWSK3" , "DMBT3" , "W
RBT3" , "BSTAT" , "VBUND" , "VBELN" , "REBZT" , "INFAE" , "STCEG" , "EGBLD" , "EGLLD" , "RSTGR" , "XNOZA" , "VERTT" , "VERTN" , "VBEWA" , "WVER
W" , "PROJK" , "FIPOS" , "NPLNR" , "AUFPL" , "APLZL" , "XEGDR" , "DMBE2" , "DMBE3" , "DMB21" , "DMB22" , "DMB23" , "DMB31" , "DMB32" , "DMB33"
, "BDIF3" , "XRAGL" , "UZAWE" , "XSTOV" , "MWST2" , "MWST3" , "SKNT2" , "SKNT3" , "XREF1" , "XREF2" , "XARCH" , "PSWSL" , "PSWBT" , "LZBKZ" , "
LANDL" , "IMKEY" , "VBEL2" , "VPOS2" , "POSN2" , "ETEN2" , "FISTL" , "GEBER" , "DABRZ" , "XNEGP" , "KOSTL" , "RFZEI" , "KKBER" , "EMPFB" , "PRC
TR" , "XREF3" , "QSSKZ" , "ZINKZ" , "DTWS1" , "DTWS2" , "DTWS3" , "DTWS4" , "XPYPR" , "KIDNO" , "ABSBT" , "CCBTC" , "PYCUR" , "PYAMT" , "BUPLA"
, "SECCO" , "CESSION_KZ" , "PPDIFF" , "PPDIF2" , "PPDIF3" , "KBLNR" , "KBLPOS" , "GRANT_NBR" , "GMVKZ" , "SRTYPE" , "LOTKZ" , "FKBER" , "INTRE
NO" , "PPRCT" , "BUZID" , "AUGGJ" , "HKTID" , "BUDGET_PD" , "KONTT" , "KONTL" , "UEBGDAT" , "VNAME" , "EGRUP" , "BTYPE" , "PROPMANO" , "YYSTORE
" , "YYDELGRP" , "YYBOLNR" FROM "BSAD" WHERE "MANDT" = :A0 AND "KUNNR" IN ( :A1 , :A2 , :A3 , :A4 , :A5 ) AND "BUKRS" = :A6 AND "AUGDT" = :A7
sql_text_length=2001
----- Explain Plan Dump -----
----- Plan Table -----
============
Plan Table
============
| Id | Operation | Name | Rows | Bytes | Cost | Time |
| 0 | SELECT STATEMENT | | | | 2 | |
| 1 | INLIST ITERATOR | | | | | |
| 2 | TABLE ACCESS BY INDEX ROWID | BSAD | 1 | 601 | 2 | 00:00:01 |
| 3 | INDEX RANGE SCAN | BSAD~1 | 1 | | 1 | 00:00:01 |
Predicate Information:
3 - access("MANDT"=:A0 AND (("KUNNR"=:A1 OR "KUNNR"=:A2 OR "KUNNR"=:A3 OR "KUNNR"=:A4 OR "KUNNR"=:A5)) AND "BUKRS"=:A6 AND "AUGDT"=:A7)
Content of other_xml column
===========================
db_version : 11.2.0.1
parse_schema : SAPSR3
plan_hash : 1162638466
plan_hash_2 : 3684135643
Outline Data:
/*+
BEGIN_OUTLINE_DATA
IGNORE_OPTIM_EMBEDDED_HINTS
OPTIMIZER_FEATURES_ENABLE('11.2.0.1')
DB_VERSION('11.2.0.1')
OPT_PARAM('query_rewrite_enabled' 'false')
OPT_PARAM('_optim_peek_user_binds' 'false')
OPT_PARAM('_optimizer_extended_cursor_sharing_rel' 'none')
OPT_PARAM('_optimizer_adaptive_cursor_sharing' 'false')
OPT_PARAM('_optimizer_use_feedback' 'false')
OPT_PARAM('star_transformation_enabled' 'true')
OPT_PARAM('optimizer_index_cost_adj' 20)
OPT_PARAM('_fix_control' '4728348:0 5483301:0 5705630:1 6626018:1 6440977:1 6972291:1 6399597:1 6430500:1 5099019:1 9196440:1 9495669:1 8
937971:1')
ALL_ROWS
OUTLINE_LEAF(@"SEL$1")
INDEX_RS_ASC(@"SEL$1" "BSAD"@"SEL$1" ("BSAD"."MANDT" "BSAD"."KUNNR" "BSAD"."BUKRS" "BSAD"."AUGDT" "BSAD"."AUGBL" "BSAD"."GJAHR" "BSAD"."B
ELNR" "BSAD"."BUZEI" "BSAD"."BUDAT"))
END_OUTLINE_DATA
Query Block Registry:
SEL$1 0xc4c8a150 (PARSER) [FINAL]
call(in-use=194136, alloc=229336), compile(in-use=233336, alloc=338904), execution(in-use=540368, alloc=544176)
End of Optimizer State Dump
Dumping Hints
=============
====================== END SQL Statement Dump ======================
thx
Jonu Joywould anyone please advise It looks OK to me.
-
Please help to tune the below query. I have provided following information
1. Query To be tuned
2. Parameter Relevant to Optimizer
3. Explain Plan and AutoTrace Ouput
4. Query traced at Level 8 and Its Tkprof Ouput
5. EXPLAIN PLAN output of DBMS_XPLAN.DISPLAY
INFORMATION 1. SQL QUERY TO BE TUNED
SELECT DISTINCT C.MAN_WIP_T_IN_TS,
C.RCP_NO,
C.WRK_CTR_ID,
C.WTR_FREE_TST_FLG,
A.COMPANY_ID,
A.PROD_ORDER,
A.PART_NO,
A.CARRIER_QTY,
B.PHY_CARID,
C.WIP_SEQ,
A.RCP_NO "CARRIER_RCP"
FROM dbadmintest.PF2_PROD_ORDER_CARRIER A,
PF2_PHYSICAL_CARRIER B,
WORK_IN_PROCESS C
WHERE C.UNIT_TYPE_CD = RTRIM('TL7')
AND C.UNIT_NM = RTRIM('T41')
AND C.WIP_TYPE_CD = 'HANDHELD'
AND C.PHY_CARRIER_SEQ = A.PHY_CARRIER_SEQ
AND A.PHY_CARRIER_SEQ = B.PHY_CARRIER_SEQ
AND ((A.CARRIER_LD_TS <= C.MAN_WIP_T_IN_TS
AND A.CARRIER_UNLD_TS >= C.MAN_WIP_T_IN_TS)
OR ( A.CARRIER_LD_TS <= C.MAN_WIP_T_IN_TS
AND A.CARRIER_UNLD_TS IS NULL))
AND ((A.CARRIER_UNLD_TS >= TO_DATE('2012-01-12 08:03:00', 'YYYY-MM-DD HH24:MI:SS')
AND A.CARRIER_UNLD_TS <= TO_DATE('2012-01-12 10:03:00', 'YYYY-MM-DD HH24:MI:SS'))
OR (A.CARRIER_LD_TS >= TO_DATE('2012-01-12 08:03:00', 'YYYY-MM-DD HH24:MI:SS')
AND A.CARRIER_LD_TS <= TO_DATE('2012-01-12 08:03:00', 'YYYY-MM-DD HH24:MI:SS'))
OR (A.CARRIER_LD_TS <= TO_DATE('2012-01-12 08:03:00', 'YYYY-MM-DD HH24:MI:SS')
AND A.CARRIER_UNLD_TS IS NULL)
OR (A.CARRIER_LD_TS <= TO_DATE('2012-01-12 08:03:00', 'YYYY-MM-DD HH24:MI:SS')
AND A.CARRIER_UNLD_TS >= TO_DATE('2012-01-12 08:03:00', 'YYYY-MM-DD HH24:MI:SS')))
ORDER BY 6,5,1
INFORMATION 2. PARAMETER RELEVANT TO OPTIMIZER
NAME TYPE VALUE
optimizer_dynamic_sampling integer 2
optimizer_features_enable string 10.2.0.4
optimizer_index_caching integer 0
optimizer_index_cost_adj integer 100
optimizer_mode string ALL_ROWS
optimizer_secure_view_merging boolean TRUE
db_file_multiblock_read_count integer 16
cursor_sharing string EXACT
SQL> column sname format a20
column pname format a20
column pval2 format a20
select
sname
, pname
, pval1
, pval2
from sys.aux_stats$;SQL>
SNAME PNAME PVAL1 PVAL2
SYSSTATS_INFO STATUS COMPLETED
SYSSTATS_INFO DSTART 08-25-2009 07:27
SYSSTATS_INFO DSTOP 08-25-2009 07:27
SYSSTATS_INFO FLAGS 1
SYSSTATS_MAIN CPUSPEEDNW 1592.87183
SYSSTATS_MAIN IOSEEKTIM 10
SYSSTATS_MAIN IOTFRSPEED 4096
SYSSTATS_MAIN SREADTIM
SYSSTATS_MAIN MREADTIM
SYSSTATS_MAIN CPUSPEED
SYSSTATS_MAIN MBRC
SYSSTATS_MAIN MAXTHR
SYSSTATS_MAIN SLAVETHR
INFORMATION 3. EXPLAIN PLAN AND AUTOTRACE OUTPUT
Execution Plan
Plan hash value: 850402268
| Id | Operation | Name | Rows | Bytes | Cost (%CPU) | Time |
| 0 | SELECT STATEMENT | | 11 | 1100 | 1568 (1) | 00:00:19 |
| 1 | SORT UNIQUE | | 11 | 1100 | 1567 (1) | 00:00:19 |
|* 2 | HASH JOIN | | 11 | 1100 | 1566 (1) | 00:00:19 |
|* 3 | TABLE ACCESS BY INDEX ROWID | PF2_PROD_ORDER_CARRIER | 5 | 270 | 763 (0) | 00:00:10 |
| 4 | NESTED LOOPS | | 11 | 1001 | 1562 (1) | 00:00:19 |
|* 5 | TABLE ACCESS BY INDEX ROWID | WORK_IN_PROCESS | 2 | 74 | 35 (0) | 00:00:01 |
|* 6 | INDEX RANGE SCAN | WORK_IN_PROCESS_IX2 | 56 | | 3 (0) | 00:00:01 |
|* 7 | INDEX RANGE SCAN | PF2_PROD_ORDER_CARRIER_IX3 | 2361 | | 6 (0) | 00:00:01 |
| 8 | TABLE ACCESS FULL | PF2_PHYSICAL_CARRIER | 1736 | 15624 | 4 (0) | 00:00:01 |
Predicate Information (identified by operation id):
2 - access("A"."PHY_CARRIER_SEQ"="B"."PHY_CARRIER_SEQ")
3 - filter(("A"."CARRIER_UNLD_TS" IS NULL AND "A"."CARRIER_LD_TS"<=TO_DATE(' 2012-01-12 08:03:00',
'syyyy-mm-dd hh24:mi:ss') OR "A"."CARRIER_UNLD_TS">=TO_DATE(' 2012-01-12 08:03:00', 'syyyy-mm-dd
hh24:mi:ss') AND "A"."CARRIER_LD_TS"<=TO_DATE(' 2012-01-12 08:03:00', 'syyyy-mm-dd hh24:mi:ss') OR
"A"."CARRIER_UNLD_TS">=TO_DATE(' 2012-01-12 08:03:00', 'syyyy-mm-dd hh24:mi:ss') AND
"A"."CARRIER_UNLD_TS"<=TO_DATE(' 2012-01-12 10:03:00', 'syyyy-mm-dd hh24:mi:ss') OR
"A"."CARRIER_LD_TS"=TO_DATE(' 2012-01-12 08:03:00', 'syyyy-mm-dd hh24:mi:ss')) AND
("A"."CARRIER_LD_TS"<="C"."MAN_WIP_T_IN_TS" AND "A"."CARRIER_UNLD_TS">="C"."MAN_WIP_T_IN_TS" OR
"A"."CARRIER_UNLD_TS" IS NULL AND "A"."CARRIER_LD_TS"<="C"."MAN_WIP_T_IN_TS"))
5 - filter("C"."WIP_TYPE_CD"='HANDHELD' AND "C"."PHY_CARRIER_SEQ" IS NOT NULL)
6 - access("C"."UNIT_TYPE_CD"='TL7' AND "C"."UNIT_NM"='T41')
7 - access("C"."PHY_CARRIER_SEQ"="A"."PHY_CARRIER_SEQ")
filter("A"."PHY_CARRIER_SEQ" IS NOT NULL)
Statistics
1 recursive calls
0 db block gets
13525998 consistent gets
7024 physical reads
0 redo size
1758 bytes sent via SQL*Net to client
492 bytes received via SQL*Net from client
2 SQL*Net roundtrips to/from client
1 sorts (memory)
0 sorts (disk)
14 rows processed
INFORMATION 4. QUERY TRACES AT LEVEL 8 AND TKPROF OUTPUT
TKPROF: Release 10.2.0.4.0 - Production on Wed Jan 18 01:48:53 2012
Copyright (c) 1982, 2007, Oracle. All rights reserved.
Trace file: ././ppf2_ora_5439924.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 DISTINCT C.MAN_WIP_T_IN_TS,
C.RCP_NO,
C.WRK_CTR_ID,
C.WTR_FREE_TST_FLG,
A.COMPANY_ID,
A.PROD_ORDER,
A.PART_NO,
A.CARRIER_QTY,
B.PHY_CARID,
C.WIP_SEQ,
A.RCP_NO "CARRIER_RCP"
FROM PF2_PROD_ORDER_CARRIER A,
PF2_PHYSICAL_CARRIER B,
WORK_IN_PROCESS C
WHERE C.UNIT_TYPE_CD = RTRIM('TL7')
AND C.UNIT_NM = RTRIM('T41')
AND C.WIP_TYPE_CD = 'HANDHELD'
AND C.PHY_CARRIER_SEQ = A.PHY_CARRIER_SEQ
AND A.PHY_CARRIER_SEQ = B.PHY_CARRIER_SEQ
AND ((A.CARRIER_LD_TS <= C.MAN_WIP_T_IN_TS
AND A.CARRIER_UNLD_TS >= C.MAN_WIP_T_IN_TS)
OR ( A.CARRIER_LD_TS <= C.MAN_WIP_T_IN_TS
AND A.CARRIER_UNLD_TS IS NULL))
AND ((A.CARRIER_UNLD_TS >= TO_DATE('2012-01-12 08:03:00', 'YYYY-MM-DD HH24:MI:SS')
AND A.CARRIER_UNLD_TS <= TO_DATE('2012-01-12 10:03:00', 'YYYY-MM-DD HH24:MI:SS'))
OR (A.CARRIER_LD_TS >= TO_DATE('2012-01-12 08:03:00', 'YYYY-MM-DD HH24:MI:SS')
AND A.CARRIER_LD_TS <= TO_DATE('2012-01-12 08:03:00', 'YYYY-MM-DD HH24:MI:SS'))
OR (A.CARRIER_LD_TS <= TO_DATE('2012-01-12 08:03:00', 'YYYY-MM-DD HH24:MI:SS')
AND A.CARRIER_UNLD_TS IS NULL)
OR (A.CARRIER_LD_TS <= TO_DATE('2012-01-12 08:03:00', 'YYYY-MM-DD HH24:MI:SS')
AND A.CARRIER_UNLD_TS >= TO_DATE('2012-01-12 08:03:00', 'YYYY-MM-DD HH24:MI:SS')))
ORDER BY 6,5,1
call count cpu elapsed disk query current rows
Parse 1 0.00 0.00 0 0 0 0
Execute 1 0.00 0.00 0 0 0 0
Fetch 2 219.55 294.41 14030 13523455 0 14
total 4 219.55 294.41 14030 13523455 0 14
Misses in library cache during parse: 0
Optimizer mode: ALL_ROWS
Parsing user id: SYS
Rows Row Source Operation
14 SORT UNIQUE (cr=13523455 pr=14030 pw=0 time=294417731 us)
14 HASH JOIN (cr=13523455 pr=14030 pw=0 time=294416444 us)
14 TABLE ACCESS BY INDEX ROWID PF2_PROD_ORDER_CARRIER (cr=13523440 pr=14030 pw=0 time=292675360 us)
98184018 NESTED LOOPS (cr=270067 pr=9028 pw=0 time=294901120 us)
12128 TABLE ACCESS BY INDEX ROWID WORK_IN_PROCESS (cr=9842 pr=8788 pw=0 time=20479883 us)
15241 INDEX RANGE SCAN WORK_IN_PROCESS_IX2 (cr=49 pr=48 pw=0 time=54577 us)(object id 65980)
98171889 INDEX RANGE SCAN PF2_PROD_ORDER_CARRIER_IX3 (cr=260225 pr=240 pw=0 time=808956 us)(object id 65990)
1736 TABLE ACCESS FULL PF2_PHYSICAL_CARRIER (cr=15 pr=0 pw=0 time=83 us)
Elapsed times include waiting on following events:
Event waited on Times Max. Wait Total Waited
---------------------------------------- Waited ---------- ------------
SQL*Net message to client 3 0.00 0.00
SQL*Net message from client 3 0.00 0.00
db file sequential read 14030 0.47 43.56
call count cpu elapsed disk query current rows
Parse 1 0.00 0.00 0 0 0 0
Execute 1 0.00 0.00 0 0 0 0
Fetch 0 0.00 0.00 0 0 0 0
total 2 0.00 0.00 0 0 0 0
Misses in library cache during parse: 0
Parsing user id: SYS
OVERALL TOTALS FOR ALL NON-RECURSIVE STATEMENTS
call count cpu elapsed disk query current rows
Parse 2 0.00 0.00 0 0 0 0
Execute 2 0.00 0.00 0 0 0 0
Fetch 2 219.55 294.41 14030 13523455 0 14
total 6 219.55 294.41 14030 13523455 0 14
Misses in library cache during parse: 0
Elapsed times include waiting on following events:
Event waited on Times Max. Wait Total Waited
---------------------------------------- Waited ---------- ------------
SQL*Net message to client 3 0.00 0.00
SQL*Net message from client 3 0.00 0.00
db file sequential read 14030 0.47 43.56
OVERALL TOTALS FOR ALL RECURSIVE STATEMENTS
call count cpu elapsed disk query current rows
Parse 0 0.00 0.00 0 0 0 0
Execute 0 0.00 0.00 0 0 0 0
Fetch 0 0.00 0.00 0 0 0 0
total 0 0.00 0.00 0 0 0 0
Misses in library cache during parse: 0
2 user SQL statements in session.
0 internal SQL statements in session.
2 SQL statements in session.
Trace file: ././ppf2_ora_5439924.trc
Trace file compatibility: 10.01.00
Sort options: default
1 session in tracefile.
2 user SQL statements in trace file.
0 internal SQL statements in trace file.
2 SQL statements in trace file.
2 unique SQL statements in trace file.
14137 lines in trace file.
294 elapsed seconds in trace file.
INFORMATION 5. EXPLAIN PLAN OUTPUT OF DBMS_XPLAN.DISPLAY
SQL> select * from table(dbms_xplan.display_cursor(null, null, 'ALLSTATS LAST'));
PLAN_TABLE_OUTPUT
SQL_ID 1z1cccq5kxt11, child number 0
SELECT /*+ gather_plan_statistics */ DISTINCT C.MAN_WIP_T_IN_TS, C.RCP_NO, C.WRK_CTR_ID, C.WTR_FREE_TST_FLG,
A.COMPANY_ID, A.PROD_ORDER, A.PART_NO, A.CARRIER_QTY, B.PHY_CARID, C.WIP_SEQ, A.RCP_NO "CARRIER_RCP"
FROM PF2_PROD_ORDER_CARRIER A, PF2_PHYSICAL_CARRIER B, WORK_IN_PROCESS C
WHERE C.UNIT_TYPE_CD = RTRIM('TL7') AND C.UNIT_NM = RTRIM('T41') AND C.WIP_TYPE_CD ='HANDHELD'
AND C.PHY_CARRIER_SEQ = A.PHY_CARRIER_SEQ AND A.PHY_CARRIER_SEQ = B.PHY_CARRIER_SEQ
AND ((A.CARRIER_LD_TS <=C.MAN_WIP_T_IN_TS AND A.CARRIER_UNLD_TS >= C.MAN_WIP_T_IN_TS) OR
( A.CARRIER_LD_TS <= C.MAN_WIP_T_IN_TS AND A.CARRIER_UNLD_TS IS NULL)) AND ((A.CARRIER_UNLD_TS >= TO_DATE('2012-01-12
08:03:00', 'YYYY-MM-DD HH24:MI:SS') AND A.CARRIER_UNLD_TS<= TO
Plan hash value: 850402268
| Id | Operation | Name | Starts |E-Rows | A-Rows |A-Time | Buffers | Reads |OMem |1Mem | Used-Mem |
| 1 | SORT UNIQUE | | 1 | 11 | 14 |00:05:41.48 | 13M | 6571 | 2048 | 2048 | 2048 (0) |
|* 2 | HASH JOIN | | 1 | 11 | 14 |00:05:41.48 | 13M | 6571 | 807K | 807K | 614K (0) |
|* 3 | TABLE ACCESS BY INDEX ROWID | PF2_PROD_ORDER_CARRIER | 1 | 5 | 14 |00:05:39.89 | 13M | 6571 | | | |
| 4 | NESTED LOOPS | | 1 | 11 | 98M |00:04:55.08 | 270K | 6569 | | | |
|* 5 | TABLE ACCESS BY INDEX ROWID | WORK_IN_PROCESS | 1 | 2 | 12130 |00:00:13.15 | 9845 | 6569 | | | |
|* 6 | INDEX RANGE SCAN | WORK_IN_PROCESS_IX2 | 1 | 56 | 15244 |00:00:00.06 | 49 | 45 | | | |
|* 7 | INDEX RANGE SCAN | PF2_PROD_ORDER_CARRIER_IX3 | 12130 | 2361 | 98M |00:00:00.92 | 260K | 0 | | | |
| 8 | TABLE ACCESS FULL | PF2_PHYSICAL_CARRIER | 1 | 1736 | 1736 |00:00:00.01 | 15 | 0 | | | |
Predicate Information (identified by operation id):
2 - access("A"."PHY_CARRIER_SEQ"="B"."PHY_CARRIER_SEQ")
3 - filter(((("A"."CARRIER_UNLD_TS" IS NULL AND "A"."CARRIER_LD_TS"<=TO_DATE(' 2012-01-12 08:03:00', 'syyyy-mm-dd hh24:mi:ss')) OR
("A"."CARRIER_UNLD_TS">=TO_DATE(' 2012-01-12 08:03:00', 'syyyy-mm-dd hh24:mi:ss') AND "A"."CARRIER_LD_TS"<=TO_DATE(' 2012-01-12 08:03:00',
'syyyy-mm-dd hh24:mi:ss')) OR ("A"."CARRIER_UNLD_TS">=TO_DATE(' 2012-01-12 08:03:00', 'syyyy-mm-dd hh24:mi:ss') AND
"A"."CARRIER_UNLD_TS"<=TO_DATE(' 2012-01-12 10:03:00', 'syyyy-mm-dd hh24:mi:ss')) OR "A"."CARRIER_LD_TS"=TO_DATE(' 2012-01-12 08:03:00',
'syyyy-mm-dd hh24:mi:ss')) AND (("A"."CARRIER_LD_TS"<="C"."MAN_WIP_T_IN_TS" AND "A"."CARRIER_UNLD_TS">="C"."MAN_WIP_T_IN_TS") OR
("A"."CARRIER_UNLD_TS" IS NULL AND "A"."CARRIER_LD_TS"<="C"."MAN_WIP_T_IN_TS"))))
5 - filter(("C"."WIP_TYPE_CD"='HANDHELD' AND "C"."PHY_CARRIER_SEQ" IS NOT NULL))
6 - access("C"."UNIT_TYPE_CD"='TL7' AND "C"."UNIT_NM"='T41')
7 - access("C"."PHY_CARRIER_SEQ"="A"."PHY_CARRIER_SEQ")
filter("A"."PHY_CARRIER_SEQ" IS NOT NULL)
41 rows selected.
Regards
RahulRahul, post your question on the SQL and PL/SQL forum PL/SQL. This forum is for Oracle Berkeley DB not Oracle Database.
Thanks,
Andrei -
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/ -
Hi,
I want some help in writing a SQL Query .Its besically a hierarchical query. Let me lay down the table structure first to explain my requirements better.
PORP_TABLE(NODE_LEVEL int, WBS_ID int, WBS_NUMBER varchar(60), LFT int,RGT int)
SELECT NODE_LEVEL, WBS_ID, LFT,RGT FROM PROPOSAL_WBS PW WHERE PROPOSAL_REV_ID = 7000
(SAMPLE DATA)
NODE WBS
LEVEL WBS_ID NUMBER LFT RGT
0 7055 ROOT 1 24
1 7056 1 2 5
1 7088 2 6 9
2 7057 1.1 3 4
2 7089 2.1 7 8
2 7091 3.1 11 14
2 7103 3.2 15 16
2 7105 4.1 19 20
1 7090 3 10 17
3 7092 3.1.1 12 13
1 7104 4 18 23
2 7106 4.2 21 22
ALLOCATION_DETAIL( WBS_ID int, COST_ID int, PERIOD Date, AMOUNT Float)
sample data
WBS_ID , COST_ID , PERIOD , AMOUNT
7057 100 01-jan-2005 5000
7057 100 01-feb-2005 2000
7057 100 01-mar-2005 1000
7057 100 01-apr-2005 6000
7057 100 01-may-2005 3000
7057 100 01-jun-2005 45000
7106 100 01-mar-2005 8000
7106 100 01-apr-2005 7000
7106 100 01-may-2005 9000
Now the PORP_TABLE has got the parents and childs. Only the leaf nodes in the hierarchy has the values stored in the ALLOCATION_DETAIL table. Now here is the scenario
In the example 7055 is the root WBS . The Leaf WBS are the one with max extension in the wbs number ( in this case it is 1.1, 2.1, 3.1.1, 3.2, 4.1 and 4.2)
Now the Starting period for each leaf node in the ALLOCATION_TABLE could be differrent . What that means is WBS 1.1 could start in Jan -2003 and WBS 3.1 Could be Jul-2005 . So the ending perios are also differrent for differrent WBS . Some can span 2 years some can 5 years.
So how to write a query so it retrieves the value for all the Wbs starting from the MIN ( PERIOD ) upto the MAX(PERIOD), and it should roll up also. Now there is No connect by Prior or any analytic functions available for this . THIS NEEDS TO BE DONE ONLY THROUGH TRADITIONAL SQL STATEMENT . And NO DB FUNCTIONS CAN BE USED .
Now if the WBS is a parent node then it should have the sum of all its child nodes for the COST category.
SO THE RESULT SET SHOULD BRING LIKE THIS
WBS_NUMBER, PERIOD_NUMER, COST_CATEGORY , AMOUNT
ROOT
1
1.1
2
2.1
3
3.1
3.1.1
3.2
4
4.1
4.2
......Thanks for all your thoughtfull replies and feedbacks. Yes it is in Sybase platform . Though I have been woking all along in Oracle , Unfortunately this one is in Sybase, and no the customer cant and wont move to Oracle. So I have to work with it . And if you want to see the table structure . Here are they :
CREATE TABLE PROPOSAL_WBS (
BURDEN_CENTER_ID numeric(18,0) NULL,
START_DATE datetime NULL,
END_DATE datetime NULL,
WBS_ID int NOT NULL,
MODIFIED_DATE datetime NULL,
CREATED_DATE datetime NULL,
MODIFIED_BY varchar(127) NULL,
CREATED_BY varchar(127) NULL,
FEE_PERCENT float NULL,
PROPOSAL_REV_ID int NOT NULL,
PARENT_WBS_ID int NULL,
NAME varchar(127) NULL,
COMMENT varchar(255) NULL,
TARGET_COST float NULL,
MONTHS_REMAINING int NULL,
DEFAULT_STAFF_FTE float NULL,
ANNUAL_GRA_SALARY float NULL,
NUMBER_OF_GRA int NULL,
MANAGEMENT_ADJUSTMENT_TOTAL float NULL,
MA_UNALLOCATED_FUNDS float NULL,
FEE_TOTAL float NULL,
FEE_UNALLOCATED_FUNDS float NULL,
TRAVEL_COMMENTS varchar(255) NULL,
ODC_COMMENTS varchar(255) NULL,
SORT_ORDER int NULL,
LFT int NULL,
RGT int NULL,
NODE_LEVEL int NULL,
WBS_NUMBER varchar(50) NOT NULL,
TOTAL_COST float NULL,
TOTAL_COST_PLUS_FEE float NULL,
PER_MILE_COST float NULL,
PER_DIEM float NULL,
TAX_RATE float NULL,
RENTAL_CAR_PER_DAY_COST float NULL,
TAXI_PER_TRIP_COST float NULL,
CONSTRAINT PK_PROPOSAL_WBS PRIMARY KEY(WBS_ID)
CREATE TABLE PROPOSAL_WBS_ALLOC_DETAIL (
WBS_ID int NOT NULL,
OBJECT_CODE_ID numeric(18,0) NOT NULL,
PERIOD_NUMBER int NOT NULL,
ALLOCATION_AMOUNT float NULL,
PERIOD_YEAR datetime NULL,
CONSTRAINT PK_PROPOSAL_WBS_AD PRIMARY KEY(WBS_ID,OBJECT_CODE_ID,PERIOD_NUMBER)
CREATE TABLE WBS_PERIOD (
PERIOD_NUMBER int NOT NULL
CREATE VIEW WBS_COST_CAT AS
SELECT PROPOSAL_WBS.PROPOSAL_REV_ID,
PROPOSAL_WBS.WBS_ID,
PROPOSAL_WBS.NAME, PROPOSAL_WBS.SORT_ORDER,
PROPOSAL_WBS.NODE_LEVEL, PROPOSAL_WBS.WBS_NUMBER,
CODES.CODE_ID COST_CATEGORY, CODES.CODE_NAME COST_CAT_NAME
FROM PROPOSAL_WBS, CODES
CREATE TABLE CODES (
CODE_ID numeric(18,0) NOT NULL,
CODE_VALUE varchar(254) NULL,
CODE_NAME varchar(254) NULL,
CODE_TYPE numeric(18,0) NULL,
CODE_PARENT_ID numeric(18,0) NULL,
CONSTRAINT PK_CODE_ID PRIMARY KEY(CODE_ID)
So let me explain little bit more . The WBSs are categorized into two differrent types. One as INPUT and the second one as NON INPUT. Now assme the the WBS in a tree structure . So only the LEAF WBSs will have the AMOUNT and they are the INPUT WBSs and all non leaf WBSs are NON INPUT. Now lets say there are 5 LEAF WBSs. Each LEAF WBS will have differrent start period ex: WBS 1.1 starts in January 2003 and goes for 48 periods . WBS 2.1 starts in November 2003 and goes for 35 periods . WBS 3.1 starts in March 2004 and goes for 52 periods. and so on .
Now as there is no Allocation Amount entry for all other WBSs except the LEAF WBSs. So how do I get the roll up . For example if you imagine the parent of WBS 1.1 is WBS 1 , and the parent of WBS 2.1 is WBS 2 and the Parent of WBS 3.1 is WBS 3 , and the parent for WBS 1, WBS 2, WBS 3 is "ROOT WBS". As I said there is no entry for WBS 1, WBS 2 , WBS 3 and the "ROOT WBS". So how do I have a roll up of the Leaf WBS data for their parent WBSs.
Now if u think of the data in a matrix report, the WBSs and the COST CATEGORY will be the row values, the Period Numbers will the column values and the Allocation Amount will be the cross values. so lets say the WBS 1 has got two leaf nodes, WBS 1.1 and WBS 1.2 then WBS 1 will have the summed amount for each period starting the minumum period of the two of its leaf nodes and for all the cost categories of both the leaf nodes. and the "ROOT WBS" will have all the cost categories of al the Leaf nodes . for all the periods , period wise. -
Explain plan for a sql statement
Hi,
I have a simple sql statement which has a cost of 122, cardinality 59 and CPU cost 1966777.
Same sql statement written in another way (using a nested select in the 'from' clause), has a cost of 58, cardinality 24 but cpu cost is much higher 29078895.
What should I look for? For a better cost overall, or for a better cpu cost? Which statement should I consider? What is most important?
Thanks.Roger25 wrote:
... Based on this, my question is what statement to choose? which is more important, the cost or the cpu cost?
Thanks.
Based on this, sorry, but my reply will remain unchanged:
Again, you cannot compare explain plan of two different queries.
Find out more:
http://asktom.oracle.com/pls/asktom/f?p=100:11:0::::P11_QUESTION_ID:313416745628
Nicolas. -
SQL Statement batching in Kodo 2.5
Can statement batching in Kodo 2.5 be observed in sql statement logs? How do
I know whether it does batching or not?Yeah, it's really quite annoying that you can't get this info from Oracle.
At some point soon, we'll probably add an option to use statement batching
anyways, at the cost of the correct behavior when optimistic lock
exceptions occur.
-Patrick
On Fri, 04 Jul 2003 17:04:46 -0400, Alex Roytman wrote:
Oracle!!
"Patrick Linskey" <[email protected]> wrote in message
news:[email protected]..
Yes; you'll see 'batching statement ...' show up in the SQL log.
What database do you use? We don't currently do any batching with Oracle,
as Oracle doesn't return useful information about which statements failed
if failures occurred.
-Patrick
On Fri, 04 Jul 2003 16:56:50 -0400, Alex Roytman wrote:
Can statement batching in Kodo 2.5 be observed in sql statement logs?
How do
I know whether it does batching or not?--
Patrick Linskey
SolarMetric Inc.
Patrick Linskey
SolarMetric Inc. -
One SQL Statement executed abnormally in Oracle10g Database
One programmer sent the following SQL to me, and ask why no result was returned. I knew that the SQL Statement was not good in writting and designing.
So, first we don't focus on it. we only focus on why no result was returned.
SELECT 'other Accts', 'Other Accts', TO_NUMBER(''),TO_DATE('2010-10-9', 'yyyy-MM-dd')
FROM dual
WHERE *0 = (SELECT COUNT(*)*
FROM (SELECT 'other Accts', 'Other Accts',SUM(a.qty_invoiced), a.sell_week_date
FROM sales_in_oracle_data a
WHERE NOT EXISTS
(SELECT pa.partner_number
FROM partner pa
WHERE pa.partner_number = a.customer_number)
AND a.sell_week_date >=TO_DATE('2010-10-9', 'yyyy-MM-dd')
AND a.sell_week_date <=TO_DATE('2011-1-1', 'yyyy-MM-dd')
AND a.qty_invoiced >= 0
AND EXISTS
(SELECT pp.product_id
FROM product_pn pp, product p
WHERE pp.magellan_pn = a.material
AND pp.product_id = p.product_id )
GROUP BY a.sell_week_date
the SQL sub Statement:
SELECT COUNT(*)*
FROM (SELECT 'other Accts', 'Other Accts',SUM(a.qty_invoiced), a.sell_week_date
FROM sales_in_oracle_data a
WHERE NOT EXISTS
(SELECT pa.partner_number
FROM partner pa
WHERE pa.partner_number = a.customer_number)
AND a.sell_week_date >=TO_DATE('2010-10-9', 'yyyy-MM-dd')
AND a.sell_week_date <=TO_DATE('2011-1-1', 'yyyy-MM-dd')
AND a.qty_invoiced >= 0
AND EXISTS
(SELECT pp.product_id
FROM product_pn pp, product p
WHERE pp.magellan_pn = a.material
AND pp.product_id = p.product_id )
GROUP BY a.sell_week_date
it returned 0 truely. But the entire SQL didn't return any data.
why can it execute like above description? I guess that it maybe go against oracle basic rule.
Any one give me some suggestion?
Edited by: [email protected] on 2010/7/19 下午 6:09I managed to track down a 10.2.0.4 instance and can confirm that this statement does not return the correct results.
Connected to:
Oracle Database 10g Enterprise Edition Release 10.2.0.4.0 - 64bit Production
With the Partitioning, OLAP, Data Mining and Real Application Testing options
SQL> select *
2 from dual
3 where 0 = (select count(*)
4 from (select dummy, sum(1)
5 from dual
6 where dummy = 'z'
7 group by dummy
8 )
9 );
no rows selected
SQL> explain plan for
2 select *
3 from dual
4 where 0 = (select count(*)
5 from (select dummy, sum(1)
6 from dual
7 where dummy = 'z'
8 group by dummy
9 )
10 );
Explained.
| Id | Operation | Name | Rows | Bytes | Cost (%CPU)| Time |
| 0 | SELECT STATEMENT | | 1 | 2 | 4 (0)| 00:00:01 |
|* 1 | FILTER | | | | | |
| 2 | TABLE ACCESS FULL | DUAL | 1 | 2 | 2 (0)| 00:00:01 |
| 3 | SORT AGGREGATE | | 1 | 2 | | |
|* 4 | TABLE ACCESS FULL| DUAL | 1 | 2 | 2 (0)| 00:00:01 |
Predicate Information (identified by operation id):
1 - filter( NOT EXISTS (SELECT /*+ */ 0 FROM "SYS"."DUAL" "DUAL"
WHERE "DUMMY"='z'))
4 - filter("DUMMY"='z')
Connected to:
Oracle Database 11g Enterprise Edition Release 11.2.0.1.0 - 64bit Production
With the Partitioning, Real Application Clusters, OLAP, Data Mining
and Real Application Testing options
SQL> select *
2 from dual
3 where 0 = (select count(*)
4 from (select dummy, sum(1)
5 from dual
6 where dummy = 'z'
7 group by dummy
8 )
9 );
D
X
SQL> explain plan for
2 select *
3 from dual
4 where 0 = (select count(*)
5 from (select dummy, sum(1)
6 from dual
7 where dummy = 'z'
8 group by dummy
9 )
10 );
Explained.
| Id | Operation | Name | Rows | Bytes | Cost (%CPU)| Time |
| 0 | SELECT STATEMENT | | 1 | 2 | 6 (0)| 00:00:01 |
|* 1 | FILTER | | | | | |
| 2 | TABLE ACCESS FULL| DUAL | 1 | 2 | 3 (0)| 00:00:01 |
|* 3 | TABLE ACCESS FULL| DUAL | 1 | 2 | 3 (0)| 00:00:01 |
Predicate Information (identified by operation id):
1 - filter( NOT EXISTS (SELECT 0 FROM "SYS"."DUAL" "DUAL" WHERE
"DUMMY"='z'))
3 - filter("DUMMY"='z')
17 rows selected.Notice that the explain plan is a bit different compared to the 11.2.0.1 release. My guess is that the optimizer is doing something weird. -
Sql statement appear twice in trace file
Hi all,
Just a little confused on why my sql statement appear twice in the sql trace file.
the following is the sequence of steps to reproduce this.
1. Enable sql trace in another session, say session B
exec dbms_monitor.session_trace_enable(38,13330,TRUE,TRUE);2. Execute the following sql in session B
select * from hosts where hostname = 'host19'3. Disable sql trace
exec dbms_monitor.session_trace_disable(38,13330);I used TKPROF to parse the trace file
tkprof DEV_ora_20621.trc DEV_ora_20621.out sys=noThe output is
SQL ID: bcpw6ttb0xbqs
Plan Hash: 0
select *
from
hosts where hostname = 'host19'
call count cpu elapsed disk query current rows
Parse 1 0.00 0.00 0 5 0 0
Execute 0 0.00 0.00 0 0 0 0
Fetch 0 0.00 0.00 0 0 0 0
total 1 0.00 0.00 0 5 0 0
Misses in library cache during parse: 0
Optimizer mode: ALL_ROWS
Parsing user id: 88
Elapsed times include waiting on following events:
Event waited on Times Max. Wait Total Waited
---------------------------------------- Waited ---------- ------------
SQL*Net message to client 1 0.00 0.00
SQL*Net message from client 1 0.00 0.00
SQL ID: bcpw6ttb0xbqs
Plan Hash: 3617124623
select *
from
hosts where hostname = 'host19'
call count cpu elapsed disk query current rows
Parse 1 0.00 0.00 0 0 0 0
Execute 1 0.00 0.00 0 0 0 0
Fetch 1 0.00 0.00 0 3 0 1
total 3 0.00 0.00 0 3 0 1
Misses in library cache during parse: 0
Optimizer mode: ALL_ROWS
Parsing user id: 88
Rows Row Source Operation
1 TABLE ACCESS BY INDEX ROWID HOSTS (cr=3 pr=0 pw=0 time=0 us cost=2 size=135 card=1)
1 INDEX RANGE SCAN IDX_HOST01 (cr=2 pr=0 pw=0 time=0 us cost=1 size=0 card=1)(object id 78193)Why the sql is showing twice?
I think the correct one would be the second since it's reporting the fetching of 1 row.
Does anyone understand this?
Cheers,
-Joel
Edited by: user12057365 on Jul 21, 2010 1:59 AMCould not reproduce this in my 10.2.0.4.0 environment. Whats your Oracle version?
-
Bind variables in DB Connect SQL Statement in Oracle
We are looking for ways to improve performance of DB Connect extract from an Oracle database.
An example command that is created by the Info-Package using a DB-Connect:
Current
SELECT "A", "B", "C", "D", "E", "F", "G", "H"
FROM "GSF_BW"."V_BW_FORCAST_FACT"
WHERE ("A" = '200904') AND ("B" BETWEEN '100801' AND '101412')
The calculated cost (calculated by Oracle Optimizer) is 25.145
Oracle recommends the usage of bind-variables.
In that case the Statement would need to look like:
SELECT "A", "B", "C", "D", "E", "F", "G", "H"
FROM "GSF_BW"."V_BW_FORCAST_FACT"
WHERE ("PG0R_SUBD" = :b1) AND ("ZCALMONTH" BETWEEN :b2 AND :b3)
This would reduce the cost to 11.000 which is 40% of the statement before.
My question now is: Can anything be done to influence the generation of the SQL statement to make it better performing?Hi,
It is always better to test yourself. Using bind variable is always a good practice and optimizer avoids hard parsing (soft parsing will be done here) if bind variables are used.
So yes, if this function is being executed several times frequently then second execution onwards it may run faster.
If you want to see actually what is happening behind it, trace it (using tkprof) and see the result.
See the below link to know more about SQL TRACE and tkprof.
http://download.oracle.com/docs/cd/E11882_01/server.112/e16638/sqltrace.htm#PFGRF01020
Regards,
Avinash
Edited by: Avinash Tripathi on Nov 16, 2010 11:46 PM -
Tracing / Profiling SQL statements in Sybase
Hi Guys, I would like to capture the SQL statements that have been fired from a web app (bit like SQL Server's profiler). Is there such a tool / facility?Please note that I cannot use dbcc commands like traceon as DBA's wont grant me sa rights (in dev...crazy eh).
Is there any easy way of doing this?
ThanksGeneral comment about MDA monitoring (tools) ...
If the local DBAs don't have any tools for monitoring MDA tables there are a few 3rd party tools that can provide MDA monitoring (ie, little/no programming required by the local DBAs).
Most of these 3rd party tools cost $$ to purchase, and each one has its strengths and weaknesses.
There is one 3rd party tool (that I know of) that is free, highly configurable, and IMHO does a very good job at collecting/presenting MDA data (especially from a historical perspective): ASEMON
I personally:
- use ASEMON for P&T work
- install/configure ASEMON at my clients when a) they don't already have a MDA monitoring capability or b) they want to free up the $$ they're paying for some other 3rd party tool
NOTE: As Mike has pointed out, MDA collections can grow quite large and rather quickly. This is true with ASEMON, too. -
Look for histroy of sql statement executed in database
is there a way to look for histroy or list of sql statement executed in database.?
similar to history command in linux or bash shell.The newer <a href="http://download.oracle.com/docs/cd/B19306_01/server.102/b14237/dynviews_2131.htm">v$sqlstats</a> (10g) is recommended over v$sql as (according to the documentation) it's "faster, more scalable, and has a greater data retention (the statistics may still appear in this view, even after the cursor has been aged out of the shared pool)", although it's missing a couple of the columns v$sql has.
The history version (if you are licenced for AWR, which is part of the extra-cost Diagnostics Pack - you may not be licenced to use it even if the dictionary views are installed) is DBA_HIST_SQLSTAT.
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