Please explain execution of select statement after parsing.
Can any body explain me what happen when a "select * from emp where ename='sanjay' " statement parsed information is found in shared sql area in library cache.
Where does the execution phase takes place. Is it in private SQLAREA or shared sql area. Please consider that it is MTS(shared server connection) and also UGA is present in Large Pool.
Please explain step by step.
Thank you
You did not indicate a version number and this is important information especially since the term MTS has been replaced by the term "Shared Servers."
Perhaps this will help you:
http://asktom.oracle.com/pls/asktom/f?p=100:11:0::::P11_QUESTION_ID:2588723819082
Similar Messages
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System memory isn't available afer the execution of select statement.
hi experts, i have written the following query.
SELECT BUKRS BLART BUDAT BLDAT MONAT
FROM BKPF INTO CORRESPONDING FIELDS OF TABLE IT_BKPF
WHERE BUKRS IN BKRS AND BUDAT IN DATE.
IF SY-SUBRC EQ 0.
SELECT BUKRS BELNR GJAHR DMBTR PSWSL ZUONR SGTXT AUFNR ALTKT SHKZG HKONT
FROM BSEG INTO CORRESPONDING FIELDS OF TABLE IT_BSEG FOR ALL ENTRIES IN IT_BKPF
WHERE BUKRS = IT_BKPF-BUKRS AND BELNR IN DOC AND HKONT IN GLE.
IF SY-SUBRC EQ 0.
SELECT BUKRS KTEXT FROM AUFK INTO CORRESPONDING FIELDS OF TABLE IT_AUFK
FOR ALL ENTRIES IN IT_BKPF WHERE BUKRS = IT_BKPF-BUKRS.
SELECT TXT50 TXT20 FROM SKAT INTO CORRESPONDING FIELDS OF TABLE IT_SKAT
FOR ALL ENTRIES IN IT_BSEG WHERE SAKNR = IT_BSEG-ALTKT.
ENDIF.
ENDIF.
and transfering tha data into final table like this
IT_FINAL[] = IT_BKPF[].
LOOP AT IT_FINAL.
READ TABLE IT_BSEG WITH KEY BUKRS = IT_FINAL-BUKRS.
IF SY-SUBRC EQ 0.
MOVE-CORRESPONDING IT_BSEG TO IT_FINAL.
IT_FINAL-BELNR = IT_BSEG-BELNR.
IT_FINAL-GJAHR = IT_BSEG-GJAHR.
IT_FINAL-DMBTR = IT_BSEG-DMBTR.
IT_FINAL-PSWSL = IT_BSEG-PSWSL.
IT_FINAL-ZUONR = IT_BSEG-ZUONR.
IT_FINAL-SGTXT = IT_BSEG-SGTXT.
IT_FINAL-AUFNR = IT_BSEG-AUFNR.
IT_FINAL-SHKZG = IT_BSEG-SHKZG.
IT_FINAL-HKONT = IT_BSEG-HKONT.
IT_FINAL-ALTKT = IT_BSEG-ALTKT.
ENDIF.
APPEND IT_FINAL.
ENDLOOP.
LOOP AT IT_FINAL.
READ TABLE IT_AUFK WITH KEY BUKRS = IT_FINAL-BUKRS.
IF SY-SUBRC EQ 0.
IT_FINAL-KTEXT = IT_AUFK-KTEXT.
ENDIF.
APPEND IT_FINAL.
ENDLOOP.
LOOP AT IT_FINAL.
READ TABLE IT_SKAT WITH KEY SAKNR = IT_FINAL-ALTKT.
IF SY-SUBRC EQ 0.
IT_FINAL-TXT50 = IT_SKAT-TXT50.
IT_FINAL-TXT20 = IT_SKAT-TXT20.
ENDIF.
APPEND IT_FINAL.
ENDLOOP.
i am getting an runtime error'the system is configured incorrectly' even for the value of bukrs between 0001& 0005 and for budat 28.08.2006 & 28.05.2009.
what happened?
the current program had to be terminated because of an error when installing the R/3 system.
the program had already reuested 399201216 bytes from the operating system with 'malloc' when the OS reported after a further memory request that there was no more memory space available.
plz help....is there any problem in my query or do i need to change something from logic?
thnks n regards,
AshmitaHi Ashmita,
1. Whenever we use FOR ALL ENTRIES, we should check the content of the main table.
BCOS if it empty, then ALL records will be fetched (in this case, from BSEG).
2. When just put a IF condition
if IT_BKPF[] is not initial.
select..... from BSEG... for all entries.....
endif.
3. This error may be coming because many many records are getting selected from BSEG and the memory on server is not available. Hence, one option is you may restrict your search. But before that please make sure the above check is in place.
(You have already used if sy-subrc = 0, that may also work, but better to use the above)
regards,
amit m. -
Select statement after Update statement under autocommit with RAC
Hi,
I've met a problem when developing my application with 10g RAC (3 machines). I am using open jdk 1.6.0 on linux platform with kernel release 2.6.18-128.e15PAE, my app using spring with oracledatasource to establish the database connection with autocommit. The situation as below:
my application sends SMPP requests and receives SMPP responses, when receiving SMPP responses, my app update the response details to related record in DB. For some concatenated messages, my app need to check whether all responses of the related concatenated message are received, if all received, my app update the final status of the message.
it is found that for some concatenated messages, all responses are received successfully, i.e. can be found in the database that the details of the responses are updated, however the final status of the message is not updated as expected. After further investigations to the database records and application logs, those cannot be updated with response returning almost at the same second, however they are manipulated one by one, not multi-thread. From the log of my app, it shown the dealing of the second response is started in the same second when the dealing of the first response is completed. It seems like when dealing the second response, it cannot "see" the first response is updated such that both responses find the message is not completed.
Wonder under what condition would this happen? my db config as below:
<bean id="dataSource" class="oracle.jdbc.pool.OracleDataSource" destroy-method="close">
<property name="driverType" value="oracle.jdbc.driver.OracleDriver" />
<property name="URL" value="jdbc:oracle:thin:@(DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)(HOST=dbhost1)(PORT=1521))(ADDRESS=(PROTOCOL=TCP)(HOST=dbhost2)(PORT=1521))(ADDRESS=(PROTOCOL=TCP)(HOST=dbhost3)(PORT=1521))(LOAD_BALANCE=yes)(CONNECT_DATA=(SERVICE_NAME=ha_bss)(SERVER=DEDICATED)))" />
<property name="user" value="dbuser" />
<property name="password" value="dbpassword" />
<property name="connectionCachingEnabled" value="true" />
<property name="connectionCacheProperties">
<props merge="default">
<prop key="InitialLimit">10</prop>
<prop key="MinLimit">10</prop>
<prop key="MaxLimit">2000</prop>
<prop key="AbandonedConnectionTimeout">0</prop>
<prop key="ConnectionWaitTimeout">120</prop>
<prop key="validate-connection">true</prop>
<prop key="validate-connection-statement">SELECT SYSDATE FROM DUAL</prop>
<prop key="factory-class">oracle.jdbc.pool.OracleDataSourceFactory</prop>
</props>
</property>
<property name="ONSConfiguration" value="nodes=dbhost1:6200,dbhost2:6200,dbhost3:6200"/>
<property name="fastConnectionFailoverEnabled" value="true"/>
</bean>
thanksThis is not likely to be a JDBC issue at all. It is likely that separate connections are being used
for the separate threads, and they may be to different RAC nodes. You must configure your
DBMS so there is zero latency between the nodes, else there may be some delay between
when one node changes data and another can see it.
HTH,
Joe -
Anyone please explain these two router stats.
Having a (hopefully) minor glitch at the moment with what seems like a stuck IP profile, main thread here.
A couple of other questions though.
http://community.bt.com/t5/BB-in-Home/How-often-do-BT-reset-the-HH-remotely-and-should-it-effect-IP/...
In the advanced stats are two connection times.
1. Internet connection time and ADSL connection time.
I was under the impression ADSL time is the time the hub has been on since the last reset... either by BT or by me pulling the plug. That was showing 6 days... I suspect my problems started when the HH was remotely reset. Am I correct in what this time measures ?
2. I see there is also an "Internet connection" time... what's that ?
It shows 1 day 14 hours. What is this figure measuring and what is it's significance ?
thanksThis seems to be a common issue on this forum.
Please take a look at this if you're trying to install via
Terminal Services:
http://support.microsoft.com/default.aspx?scid=kb;en-us;320185 -
Can you please help with this select statement.
The following code has a result, I need to modify the select somehow which only gives me the rows which are common between all PLSTS.
Any suggestions?
Thank you
SELECT DISTINCT P.PLST, P.MENU, I,PNL, P.ACCESS
FROM AUTHITEM P, I.MENUITEM
WHERE P.MENU = I.MENU
AND P.PNL = I.PNL
AND P.MENU IN ('MSN, CPP')
AND P.ACESS >= 8
GROUP BY P.PLST, PMENU, I.PNL, P.ACCESS
HAVING COUNT (*) >=2
ORDER BY 2,3,4,1
This is the result with having count > = 1, and if I add having count > =1 I get the following result
PLST MENU PNL ACCESS
C001 MSN LNAME 14
C002 MSN LNAME 14
B008 MSN LNAME 14
B005 MSN FNAME 14
M009 MSN LNAME 14
C001 MSN GNAME 14
C002 MSN GNAME 14
B008 MSN LNAME 14
C001 MSN FNAME 14
C002 MSN FNAME 14
k008 CPP MNAME 14
I need this result
PLST MENU PNL ACCESS
C001 MSN LNAME 14
C002 MSN LNAME 14
C001 MSN GNAME 14
C002 MSN GNAME 14
C001 MSN FNAME 14
C002 MSN FNAME 14why bother with DISTINCT ?
have a look at the results of :
SELECT P.PLST, P.MENU, I.PNL, P.ACCESS , COUNT(*) ZCOUNT
FROM AUTHITEM P, I.MENUITEM
WHERE P.MENU = I.MENU
AND P.PNL = I.PNL
AND P.MENU IN ('MSN, CPP')
AND P.ACCESS >= 8
GROUP BY P.PLST, P.PMENU, I.PNL, P.ACCESS
ORDER BY 2,3,4,1
;and then apply HAVING COUNT(*) >= ... -
Tuning Select Statement . field sequence and where clause
Hi All
Are there any general guidelines how to write select < field sequence >where clause < field sequence ? Is that shuld be in order of the field sequence in tables?
And how to use this when we have a view or a inner - join . Is that separate from normal select statement that is using FOR ALL ENTRIES.
Please let me know any general guidelines available on this,
AmolHello Amol,
I have another hint:
The statement FOR ALL ENTRIES will package the select statements for every five entries in the internal table. So in comparison to the following code sequence...
LOOP AT itab.
SELECT * FROM table WHERE key = itab-key.
ENDLOOP
the number of select statements is reduced to 20% with
SELECT * FROM table INTO TABLE ...
FOR ALL ENTRIES IN itab
WHERE key = itab-key
If I'm expecting a <i>huge</i> amount of data a go a step further and create my own packages by building a range table with around 100-500 entries and execute a select there...
LOOP AT itab.
IF counter < 500.
APPEND itab-key TO range-tab. " just code example
ENDIF.
IF count >= 500.
SELECT * FROM table APPENDING TABLE ...
WHERE key IN range_tab
ENDIF.
" adjust and calculate counter
ENDLOOP.
* Don't forget last select statement after loop
Best wishes,
Florin -
hi i have a problem.
i want to extract records from three fields in a table using select statement.after extraction.
if there is no records in the three fields i had to give another condition.can any body provide code for thisHI,
try with this
select field1 field1 field 1
from <tablename>
into itab1
where
condition1...
now u check for
if sy-subrc ne 0. OR itab1[] is initial.
select field1 field1 field 1
from <tablename>
into itab1
where
condition1...
condition2...
endif.
If i am not clear ... reply back
Santhosh -
Select statement performance improvement.
HI Guru's,
I am new to ABAP.
I have the below select stement
000304 SELECT mandt msgguid pid exetimest
000305 INTO TABLE lt_key
000306 UP TO lv_del_rows ROWS
000307 FROM (gv_master)
000308 WHERE
000309 * msgstate IN rt_msgstate
000310 * AND ( adapt_stat = cl_xms_persist=>co_stat_adap_processed
000311 * OR adapt_stat = cl_xms_persist=>co_stat_adap_undefined )
000312 * AND itfaction = ls_itfaction
000313 * AND msgtype = cl_xms_persist=>co_async
000314 * AND
000315 exetimest LE lv_timestamp
000316 AND exetimest GE last_ts
000317 AND reorg = cl_xms_persist=>co_reorg_ini
000318 ORDER BY mandt itfaction reorg exetimest.
Can anyone help me how i can improve the performance of this statement?
Here is the sql trace for the statement:
SELECT
/*+
FIRST_ROWS (100)
"MANDT" , "MSGGUID" , "PID" , "EXETIMEST"
FROM
"SXMSPMAST"
WHERE
"MANDT" = :A0 AND "EXETIMEST" <= :A1 AND "EXETIMEST" >= :A2 AND "REORG" = :A3
ORDER BY
"MANDT" , "ITFACTION" , "REORG" , "EXETIMEST"
Execution Plan
SELECT STATEMENT ( Estimated Costs = 3 , Estimated #Rows = 544 )
4 SORT ORDER BY
( Estim. Costs = 2 , Estim. #Rows = 544 )
Estim. CPU-Costs = 15.671.852 Estim. IO-Costs = 1
3 FILTER
2 TABLE ACCESS BY INDEX ROWID SXMSPMAST
( Estim. Costs = 1 , Estim. #Rows = 544 )
Estim. CPU-Costs = 11.130 Estim. IO-Costs = 1
1 INDEX RANGE SCAN SXMSPMAST~TST
Search Columns: 2
Estim. CPU-Costs = 3.329 Estim. IO-Costs = 0
Do I need to create any new index ? Do i need to remove the Order By clause?
Thanks in advance.why is there an
UP TO lv_del_rows ROWS
together with an ORDER BY?
The database will find all rows fulfilling the condition but returns only the largest Top lv_del_rows.
Therefore it can take a while.
Your index, always put the client field at first position.
actually I am not really convinced by your logic:
itfaction reorg exetimest.
itfaction is the first in the sort order, so all records with the smallest itfactio will come first, but itfaction is not specified, is this really what you want?
Change the index to mandt reorg exetimest reorg
and change the ORDER BY to mandt reorg exetimest
then it will become fast.
* AND ( adapt_stat = cl_xms_persist=>co_stat_adap_processed
000311 * OR adapt_stat = cl_xms_persist=>co_stat_adap_undefined )
000312 * AND itfaction = ls_itfaction
000313 * AND msgtype = cl_xms_persist=>co_async
000314 * AND
000315 exetimest LE lv_timestamp
000316 AND exetimest GE last_ts
000317 AND reorg = cl_xms_persist=>co_reorg_ini
000318 ORDER BY mandt itfaction reorg exetimest. -
How a select statement generates redo logs
Can some one explain how a select statement generates redo logs
NaveenRedo with a select statement happens when dirty blocks get written to the database, and are then "cleaned up" when next read of that data block. This could happen when a large DML statement does not commit before the DB Writer needs to write modified blocks to disk. The next time the blocks are read by a select statement they get modified, hence REDO is generated by the select statement.
Read the following for more and better understandings.
http://www.dbspecialists.com/specialists/specialist2003-10.htm
Jaffar -
hI
Im BW-Consultant. I have two tables with some fileds.
ZTABLE1 ---> MATNR, PRCTR, BUKRS, LIGNG, MATGR.And this table has 5-materials
ZTABLE2 --> MATNR, PRCTR, BUKRS, FKMNG, VERID. And this table has 10-materials.
These two tables(ZTABLE1, ZTABLE2) has 3-materials are common.
But i want all 15-materials in an another table ZTABLE3. So how can i write an <b>outer join statement.</b> .
Please give the OuterJoinCode(select statement) to get all 15-materials
regards
kumarExample
SELECT KNA1~KUNNR KNA1~ADRNR ADR6~SMTP_ADDR
INTO (A, B, C)
FROM KNA1 LEFT OUTER JOIN ADR6
ON KNA1~ADRNR = ADR6~ADDRNUMBER
WHERE KUNNR BETWEEN '0000000000' AND '0000500000'.
DATA: BEGIN OF wa,
carrid TYPE scarr-carrid,
carrname TYPE scarr-carrname,
connid TYPE spfli-connid,
END OF wa,
itab LIKE SORTED TABLE OF wa
WITH NON-UNIQUE KEY carrid.
SELECT s~carrid s~carrname p~connid
INTO CORRESPONDING FIELDS OF TABLE itab
FROM scarr AS s
LEFT OUTER JOIN spfli AS p ON s~carrid = p~carrid AND
p~cityfrom = 'FRANKFURT'.
LOOP AT itab INTO wa.
WRITE: / wa-carrid, wa-carrname, wa-connid.
ENDLOOP.
A -
Please explain on what does these select statements get from these tables..
Hello Experts,
What does these select statements get?and what are these tables CDHDR and CDPOS used for?
The program that I am currently modifying lets users post documents and the ones that are not posted
are saved in a custom table. Now, we had a scenario in PROD server wherein certain items are not being
fetched as bypassed but we saved it in the bypassed table. Anyway, below is the select statements:
get all change document header within the selected dates
SELECT * INTO CORRESPONDING FIELDS OF TABLE it_cdhdr
FROM cdhdr
WHERE udate IN s_udate
AND objectclas EQ 'CHARGE'
AND tcode IN (lc_tcode_msc1,
lc_tcode_msc2,
lc_tcode_msc1n,
lc_tcode_msc2n,
lv_tcode_vl33n,
'SE38',
'ZGENE').
IF NOT it_cdhdr[] IS INITIAL.
SELECT objectid changenr value_new
FROM cdpos
INTO TABLE it_cdpos
FOR ALL ENTRIES IN it_cdhdr
WHERE objectclas EQ it_cdhdr-objectclas
AND objectid = it_cdhdr-objectid
AND changenr = it_cdhdr-changenr
AND tabname = lc_tabname_mcha
AND fname IN (lc_fname_zustd,'LWEDT').
DELETE it_cdpos WHERE value_new+00(01) = 'X'.
LOOP AT it_cdpos ASSIGNING <fs_cdpos>.
l_matnr = <fs_cdpos>-objectid+00(18).
l_charg = <fs_cdpos>-objectid+22(10).
l_zustd = <fs_cdpos>-value_new+00(01).
READ TABLE it_batch INTO wa_batch
WITH KEY matnr = l_matnr
charg = l_charg.
IF sy-subrc EQ 0.
l_tabix = sy-tabix.
wa_batch-zustd = l_zustd.
MODIFY it_batch FROM wa_batch INDEX l_tabix
TRANSPORTING zustd.
ELSE.
wa_batch-matnr = l_matnr.
wa_batch-charg = l_charg.
wa_batch-zustd = l_zustd.
wa_batch-code = 'A'. "selected within period
APPEND wa_batch TO it_batch.
ENDIF.
ENDLOOP.
ENDIF.Hi,
The first select statement is for Change document header.CDHDR table contains this object class in your case if you change any batch number for any material number from the transaction for example (MB01) you can trace this .
From CDPOS you can trace which tables affected (EX : MCHA) and the new value(l_zustd ).
Regds,
Vinsa.R -
Getting a dumb after writing a SELECT statement at TABLE level of SMART
hi all,
i have created a RATE COMPARISON REPORT.In that Report i have to display Rate Price against RFQ No.For this purpose i have write a code at SMART FORMS in TABLE.Following are the code:
SELECT SINGLE netpr
INTO it_detail
FROM ekpo
INNER JOIN ekko ON
ekko~ebeln = ekpo~ebeln
WHERE ekko~BSTYP EQ 'F'
AND ekko~spras eq 'E'
AND ekpo~ebeln eq IT_DETAIL-EBELN
This code is assign with TEXT FILED at TABLE level.when i execute it i get the following dump.
An exception occurred that is explained in detail below.
The exception, which is assigned to class 'CXSY_OPEN_SQL_DB', was not caught in procedure "%CO2" "(FORM)"_,
nor was it propagated by a RAISING clause.Since the caller of the procedure could not have anticipated that the exception would occur, the current program is terminated.
The reason for the exception is:
In a SELECT access, the read file could not be placed in the target field provided. Either the conversion is not supported for the type of the target field, the target field is too small to include the value, or the data does not have the format required for the target field.
could any body tell me what is problem in my SELECT query statement after executing giving me a dump.
Thanks,
sappk25Hi
The select query is wrong, as you should not move the single field into a table (it_detail)....
Change the query as follows...
data: v_netwr type netwr.
SELECT SINGLE netpr
INTO v_netwr
FROM ekpo
INNER JOIN ekko ON
ekkoebeln = ekpoebeln
WHERE ekko~BSTYP EQ 'F'
AND ekko~spras eq 'E'
AND ekpo~ebeln eq IT_DETAIL-EBEL
if sy-subrc eq 0.
move v_netwr to it_detail.
endif.
Hope this helps.... -
Explain plan: "Select statement"
Hi,
I'm using the explain plan command to retrieve information about query execution. In particular I want to estimate query execution time.
Let's consider the following example:
"| Id | Operation | Name | Rows | Bytes | Cost (%CPU)| Time |"
"| 0 | SELECT STATEMENT | | 4775 | 484K| 98886 (1)| 00:19:47 |"
"| 1 | HASH GROUP BY | | 4775 | 484K| 98886 (1)| 00:19:47 |"
"|* 2 | MAT_VIEW ACCESS FULL| Materialized_view1 | 4775 | 484K| 98884 (1)| 00:19:47 |"
In the calculation of total execution time should i consider the "select statement" operation?
The total execution time can be calculated like this: Time(Select statement) + Time(hash group by) + Time(access full)=19.47*3=58.41. Is it right?
ThanksNo, the expected time is 00:19:47. No time is expected to be spent in steps 0 and 1.
-
Within music Library can anyone please explain why after I select the option to sort 'Album by Artist' a number of tracks are being treated as separate albums? How can I fix this? I have tried to manually correct by 'drag and drop' individual tracks but that doesn't work. My music library includes a number of repeat album artwork images simply because not all tracks are being listed under the one album making my library more difficult to use than it should. Any advise would be appreciated.
See Grouping tracks into albums.
tt2 -
Select Statement -- Where Clause Execution Order
What is the order of execution of the "AND" and "OR" in the WHERE clause of a Select statement?
Are the "AND"'s executed from the top down, left to right? Is it the same for the "OR"'s execution?
Thanks for any help...Not clear why you care. There is an order in which the optimizer parses the SQL (which may change from ver to ver), but this is a fairly quick operation. The order in which tables are visited and predicates evaluated is dependent on what the op[timizer does with the SQL.
Ken
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