Harmful statistics in DB13

Hi Friends,
Whats that mean if we get warning in Check db job that there are harmful statistics for some tables and indexes. I browse thru some of the threads before posting and I could able to get the solution but I want to know what if these harmful statistics exist in the database without being taken care and what happen if we delete these harmful statistics will it effect the performance of database for a good or bad ?
Thank you
Mandra

Ignore my comment, if you still run Oracle 9!
murali reddy wrote:
There are some tables which schould not have statitistics since those statistics can affect DB performance .
This advice is outdated since Oracle 10!
Since Oracle 10 ALL tables, even Cluster Tables should have statistics.
Probably in your Upgrade someone forgot to update the corresponding check tables.
Work out Note 403704, choose the correct scripts for your DB release and apply them.
Volker

Similar Messages

Warning in update statistics in db13

HI all,
in my prd system (HP-ux, oracle 9.2, sap 4.7 ). i got warning msg in update statistics in db13. like " BR986W Index SAPCRP.SMW0REL~0 is unbalanced - please rebuilt the index."
how to solve this problem.
Regards,
sk

-> check sapnotes n° 444.287 & 439.783
-> run report
rsanaora
GreetZ, AH

Harmful statistics???

Harmful statistics detected error is frequntly occuring on the system
Well deleting them is a temporary solution
Should i create new statistics
Is there any other permanent solution for this???
Help appreciated

Hello,
I partly disagree with Yoganand here.
SAP's opinion about useful and harmful statistics depends on SAP release, on database release, and of course on the table.
A permanent solution will begin by finding out whether these statistics really are harmful for your release.
SAP note 122718 might give you are start.
You may have to delete statistics, or you may have to adjust your DBCHECK, in order not to get further warnings.
regards
Edited by: Joe Bo. on Jan 16, 2009 10:49 AM:
Or you may have to change the rules how statistics will be collected.

Issue with check optimiser statistics in DB13

We have scheduled Check Optimiser statistics and update optimiser statistics in our development server through DB13. But after execution of the action it is showing in red and no action log could be obtained. How to obtain the Action Log for both the Action and the shows the error 'SCHDEULING FAILED'?

abhishek40958 wrote:
My colleague cleared the cleanup logs by clicking "cleanup all scheduled actions in DB 13" the check DB worked fine and so did the check optimizer and after about 2 hrs everything completed successfully but now when i initialize my tape it shows the STATUS AS UNAVAILABLE although my tape device and tape are working fine don't the reason for the tape now not being able to initialize.
Did you checked init<DBSID>.sap over "action parameters" tab? Check configuration in "init<DBSID>.sap", also.
Best regards,
Orkun Gedik

Optimizer Statistics

hello all,
any one help me hw can i schedule update statistics other than by db13, what are the other way i can do this task?
thanks,
jansi

Hi ,
You can use BRtools for Update Database statistice .
su - orasid
brtools
choose Option 7 ---> Database statistics
and choose Option 1 for Database Statistice .
Processing database statistics
1 = Update database statistics
2 - Collect missing statistics
3 - Delete harmful statistics
4 - Manage database statistics
5 - Collect dictionary statistics
6 - Collect system statistics
7 - Reset program status
Regards

Error while schedulingg update stat in db13

Dear Experts,
Please look into my issue we are facing an error while scheduling update statistics in db13 and I tried to open detailed log
It is given
SXPG_COMMAND_EXECUTE failed for BRTOOLS - Reason: program_start_error: For More Information, See SYS
Please help me how to solve this my error
Regards

Hi,
Check the owner for BRBACKUP, BRARCHIVE, and BRCONNECT in kernel,
these files should be with SIDADM, if not change the owner to SIDADM and rerun the update stats.
and also Refer the note 446172
Regards,
Ram

Warning messages in DB13

When I run UPDATE Statistics in DB13, it is giving warning, "BR0988W Bitmap index /BI0/F0FIGL_C01~12 selected for checking statistics - please activate the monitoring attribute for table SAPSR3./BI0/F0FIGL_C01".
Can anyone please advice on this issue.

the problem is resolved

DB13 Check and update optimizer stat error: ORA-01652: unable to extend tem

Hi SAP Gurus,
When running Check and Update Optimizer Statistics in DB13, an error occurs.
BR0280I BRCONNECT time stamp: 2011-03-10 06.35.52
BR0301E SQL error -1652 at location stats_tab_collect-16
ORA-01652: unable to extend temp segment by 12137 in tablespace SYSTEM
BR0886E Checking/collecting statistics failed for table SAPR3.ACCTIT
BR0280I BRCONNECT time stamp: 2011-03-10 06.36.49
BR0850I 3 of 39479 objects processed - 3.522 of 342.781 units done
BR0204I Percentage done: 1.03%, estimated end time: 15:47
Looking at tablespace SYSTEM in DB02, the percent used is 58. Auto-extent feature is OFF. Will turning the auto-extent ON, remove the error?

It seems like Your user (by a mistake) have tablespace SYSTEM as temporary tablespace.
Connect as sysdba in Your database and check which temp tablespaces awaiable, and size of them:
select tablespace_name, sum(bytes)/1024/1024 "Size of TEMP TBS in MB" from dba_temp_files group by tablespace_name;
Check which users having SYSTEM as tamp-tbs:
select username, temporary_tablespace from dba_users where temporary_tablespace like 'SYSTEM' order by 1;
Change those users to have one of your temp-tablespaces:
alter user &username temporary tablespace &&TempTBS;
It's also a good idea to have autoextend on on Your temp TBS, but remember to set maxsize so you doesn't fill up your disksystem.
Hope this solve Your problems.
Regards
Audun
DBA

Update Database Statistics during System Export

hi All,
I am getting following error on step (Update Database Statistics ) during system export.
WARNING 2011-06-17 15:13:35
Execution of the command "E:\usr\sap\PRD\SYS\exe\uc\NTAMD64\
brconnect.exe -u / -c -o summary -f stats -o SAPSR3 -t all -m +I -s
P10 -f allsel,collect,method,precision,space,keep -p 4"
finished with return code 5.
Output: BR0801I BRCONNECT 7.00 (31)BR0805I Start of BRCONNECT processing:
cegczbfe.sta 2011-06-17 15.12.02BR0484I BRCONNECT log file:
G:\oracle\PRD\sapcheck\cegczbfe.sta
ERROR 2011-06-17 15:13:35
CJS-30023 Process call 'E:\usr\sap\PRD\SYS\exe\uc\NTAMD64\
brconnect.exe -u / -c -o summary -f stats -o SAPSR3 -t all -m +I -s P10
-f allsel,collect,method,precision,space,keep -p 4'
exits with error code 5. For details see log file(s) brconnect.log.
there is small part of brconnect.log is:
BR0204I Percentage done: 27.88%, estimated end time: 15:16
BR0001I **************____________________________________
BR0280I BRCONNECT thread 2: time stamp: 2011-06-17 15.13.31
BR0301E SQL error -20003 in thread 2 at location stats_tab_collect-20, SQL statement:
'BEGIN DBMS_STATS.GATHER_TABLE_STATS (OWNNAME => '"SAPSR3"', TABNAME => '"/BEV3/CHCL_STAT"', ESTIMATE_PERCENT => NULL, METHOD_OPT => 'FOR ALL COLUMNS SIZE 1', DEGREE => NULL, CASCADE => TRUE, NO_INVALIDATE => FALSE); END;'
ORA-20003: Specified bug number (5099019) does not exist
ORA-06512: at "SYS.DBMS_STATS", line 14830
ORA-06512: at "SYS.DBMS_STATS", line 14851
ORA-06512: at line 1
BR0886E Checking/collecting statistics failed for table SAPSR3./BEV3/CHCL_STAT
BR0280I BRCONNECT thread 2: time stamp: 2011-06-17 15.13.31
BR0301E SQL error -20003 in thread 2 at location stats_tab_collect-20, SQL statement:
'BEGIN DBMS_STATS.GATHER_TABLE_STATS (OWNNAME => '"SAPSR3"', TABNAME => '"/BEV3/CHCL_STATT"', ESTIMATE_PERCENT => NULL, METHOD_OPT => 'FOR ALL COLUMNS SIZE 1', DEGREE => NULL, CASCADE => TRUE, NO_INVALIDATE => FALSE); END;'
ORA-20003: Specified bug number (5099019) does not exist
ORA-06512: at "SYS.DBMS_STATS", line 14830
ORA-06512: at "SYS.DBMS_STATS", line 14851
ORA-06512: at line 1
BR0886E Checking/collecting statistics failed for table SAPSR3./BEV3/CHCL_STATT
BR0280I BRCONNECT thread 2: time stamp: 2011-06-17 15.13.31
BR0301E SQL error -20003 in thread 2 at location stats_tab_collect-20, SQL statement:
'BEGIN DBMS_STATS.GATHER_TABLE_STATS (OWNNAME => '"SAPSR3"', TABNAME => '"/BEV3/CHCMVWOBJ"', ESTIMATE_PERCENT => NULL, METHOD_OPT => 'FOR ALL COLUMNS SIZE 1', DEGREE => NULL, CASCADE => TRUE, NO_INVALIDATE => FALSE); END;'
ORA-20003: Specified bug number (5099019) does not exist
ORA-06512: at "SYS.DBMS_STATS", line 14830
ORA-06512: at "SYS.DBMS_STATS", line 14851
ORA-06512: at line 1
BR0886E Checking/collecting statistics failed for table SAPSR3./BEV3/CHCMVWOBJ
BR0280I BRCONNECT thread 2: time stamp: 2011-06-17 15.13.31
BR0301E SQL error -20003 in thread 2 at location stats_tab_collect-20, SQL statement:
'BEGIN DBMS_STATS.GATHER_TABLE_STATS (OWNNAME => '"SAPSR3"', TABNAME => '"/BEV3/CHCMVWOBPR"', ESTIMATE_PERCENT => NULL, METHOD_OPT => 'FOR ALL COLUMNS SIZE 1', DEGREE => NULL, CASCADE => TRUE, NO_INVALIDATE => FALSE); END;'
ORA-20003: Specified bug number (5099019) does not exist
ORA-06512: at "SYS.DBMS_STATS", line 14830
BEGIN DBMS_STATS.GATHER_TABLE_STATS (OWNNAME => '"SAPSR3"', TABNAME => '"/BEV3/CHCTLVAR"', ESTIMATE_PERCENT => NULL, METHOD_OPT => 'FOR ALL COLUMNS SIZE 1', DEGREE => NULL, CASCADE => TRUE, NO_INVALIDATE => FALSE); END;'
ORA-20003: Specified bug number (5099019) does not exist
ORA-06512: at "SYS.DBMS_STATS", line 14830
ORA-06512: at "SYS.DBMS_STATS", line 14851
ORA-06512: at line 1
ORA-06512: at line 1
BR0886E Checking/collecting statistics failed for table SAPSR3./BEV3/CHCTMSTFUB
BR0280I BRCONNECT thread 2: time stamp: 2011-06-17 15.13.34
BR0844E 100 errors occurred in thread 2 - terminating processing of the thread...
BR0280I BRCONNECT time stamp: 2011-06-17 15.13.34
BR0848I Thread 2 finished with return code -1
BR0280I BRCONNECT time stamp: 2011-06-17 15.13.34
BR0879I Statistics checked for 0 tables
BR0878I Number of tables selected to collect statistics after check: 0
BR0880I Statistics collected for 639/0 tables/indexes
BR0889I Structure validated for 0/749/0 tables/indexes/clusters
BR1308E Collection of statistics failed for 68292/0 tables/indexes
BR0806I End of BRCONNECT processing: cegczbfe.sta 2011-06-17 15.13.34
BR0280I BRCONNECT time stamp: 2011-06-17 15.13.35
BR0804I BRCONNECT terminated with errors
how can I resolve this issue?
Regards,
majamil

hi SM,
I have applied these patches with Opatch which successfully applied.
is it ok or i had to use the MOpatch for these?
one more thing for your information , when i execute Delete Harmful Statistics under Database Statistics in brtools then i got following
BR0280I BRCONNECT time stamp: 2011-06-30 08.10.53
BR0818I Number of tables found in DBSTATC for owner SAPSR3: 390
BR0280I BRCONNECT time stamp: 2011-06-30 08.10.53
BR0807I Name of database instance: PRD
BR0808I BRCONNECT action ID: cegfjniv
BR0809I BRCONNECT function ID: dst
BR0810I BRCONNECT function: stats
BR0812I Database objects for processing: HARMFUL
BR0852I Number of tables to delete statistics: 0
BR0856I Number of indexes to delete statistics: 0
BR0863W No tables/indexes found to update/delete statistics or validate structur
e
BR0806I End of BRCONNECT processing: cegfjniv.dst 2011-06-30 08.10.53
BR0280I BRCONNECT time stamp: 2011-06-30 08.10.53
BR0803I BRCONNECT completed successfully with warnings
BR0292I Execution of BRCONNECT finished with return code 1
BR0668I Warnings or errors occurred - you can continue to ignore them or go back
to repeat the last action
BR0280I BRTOOLS time stamp: 2011-06-30 08.10.53
BR0670I Enter 'c[ont]' to continue, 'b[ack]' to go back, 's[top]' to abort:
c
why i am getting this return code 1?
Regards,
Edited by: majamil on Jun 30, 2011 8:20 AM

BR0301E SQL error -27140 at location db_connect-2, SQL statement: DB13

Hello All,
We have ECC 6 with
Database Oracle: 10.2.0.2.0
OS: HP-UX
We are facing problem while running Check and Update Optimizer Statistics in DB13. The Job Log says
Job started
Step 001 started (program RSDBAJOB, variant &0000000000003, user ID LARJHD01)
Execute logical command BRCONNECT On host madsappr
Parameters: -u / -jid STATS20090519130903 -c -f stats -t ALL
SXPG_COMMAND_EXECUTE(LONG)
COMMANDNAME = BRCONNECT
OPERATINGSYSTEM = ANYOS
TARGETSYSTEM = madsappr
DESTINATION =
BR0801I BRCONNECT 7.00 (24)
BR0805I Start of BRCONNECT processing: ceapnjyf.sta 2009-05-19 13.09.05
BR0484I BRCONNECT log file: /oracle/PRD/sapcheck/ceapnjyf.sta
BR0280I BRCONNECT time stamp: 2009-05-19 13.09.07
BR0301E SQL error -27140 at location db_connect-2, SQL statement:
'CONNECT /'
ORA-27140: attach to post/wait facility failed
BR0310E Connect to database instance PRD failed
BR0280I BRCONNECT time stamp: 2009-05-19 13.09.07
BR0301E SQL error -27140 at location db_connect-2, SQL statement:
'CONNECT /'
ORA-27140: attach to post/wait facility failed
BR0310E Connect to database instance PRD failed
BR0806I End of BRCONNECT processing: ceapnjyf.sta2009-05-19 13.09.07
BR0280I BRCONNECT time stamp: 2009-05-19 13.09.07
BR0804I BRCONNECT terminated with errors
External program terminated with exit code 3
BRCONNECT returned error status E
Job finished
Please throw some light on this error.
=Alex Daniel=

Hi,
Please check below links.
DB13 Jobs are Failing and Brconnect does not work
Re: Error in CHECKDB
http://ora-exp.blogspot.com/2006/12/solution-of-ora-27140-attach-to.html
Thanks,
Sushil

PSAP SID TABLESPACE UPDATE STATISTICS ADVANTAGES AND DISADVANTAGES

Dear All,
Can anyone explain me if we select PSAP SID table space only for update statistics from DB13 Instead of selecting all tables for update statistics,what are the advantages and disadvantages of selecting only PSAP SID tablespace .
I will be glad if you can suggest any related sapnote or sapmaterial.
we are working on SAP ECC5 and oracle version id 9i and operating system is windows.

Hi arunkumar ,
When you are updating statitics then update for all table space why for one only.After all it will increase the performance of your database.
Regards
Ashok

Database performance: avg. DB time is high

My system is ECC6, MSSQL 2005 64 bit.
I got a ERA report from my solution manager and it showed that we had a performance problem.
Our performance overview is red because of the database performance.
The avg. DB time in ms is 2768890,3. It's very high.
Could you please help us on this issue?
Leo

Hai,
There might number of reasons for high DB time.
Check your I/O statistics, check your table structure, create Indexes if needed for efficient table access.
You can schedule Optimize statistics in DB13 to get the statistics upto date which helps DB to get the best possible way to access data from your DB.
Analyse the DB buffers and adjust them to get optimal performance. (Should be done by experienced DB admins).
Check the below links....
http://help.sap.com/saphelp_nw70/helpdata/EN/f2/31add7810c11d288ec0000e8200722/frameset.htm
http://help.sap.com/saphelp_nw70/helpdata/EN/f2/31add7810c11d288ec0000e8200722/frameset.htm
You can also take help from SAP to analyze your case.
Regards,
Yoganand.V

Index Compression in SAP - system/basis tables?

Hi!
In thread Oracle comression in SAP environments the Oracle 10g feature index compression was discussed. We are now going to implement it also. SAP and Oracle say, this can be done for any index.
So we selected the biggest and the most frequently used indexes and analyzed them. We could save about 100GB disk space.
But here comes my question:
In the hitlist of our most frequently used and biggest Indexes there are also some basis table indexes.
A few samples:
BALHDR~0
BALHDR~1
BALHDR~2
BALHDR~3
BDCP~0
BDCP~1
BDCP~POS
BDCPS~0
BDCPS~1
CDCLS~0
CDHDR~0
D010INC~0
D010INC~1
D010TAB~0
D010TAB~1
DD01L~0
DD03L~5
DD07L~0
E071K~0
E071K~ULI
GVD_LATCHCHILDS~0
GVD_OBJECT_DEPEN~0
GVD_SEGSTAT~0
QRFCTRACE~0
QRFCTRACE~001
QRFCTRACE~002
REPOSRC~0
SCPRSVALS~0
SEOCOMPODF~0
SMSELKRIT~0
SRRELROLES~0
SRRELROLES~002
STXH~0
STXH~REF
STXL~0
SWW_CONT~0
TBTCS~1
TODIR~0
TRFCQOUT~5
USR02~0
UST04~0
VBDATA~0
VBMOD~0
WBCROSSGT~0
Is it really recommended to compress indexes of SAP Basis Tables also - especially in the area of Repository/Dictionary, t/qRFC and/or "Verbuchung" (VB...)?
Thanx for any hint and/or comment!
Regards,
Volker

Hi Volkar,
I have succesfully tested the oracle index compression on ECC5 environment for the following tables in a sandbox environment;
ppoix
pcl2
pcl4
In total I saved around 60GB in the tablespaces.
Before compression I started a payroll run to see what time this will take without compression.
After compression of the indexes I re-executed the payroll which took exactly the same time as without compression (2 hours). So no impact on performance.
Also did an update statistics in DB13 -> no impact
With brtools: force update of specific table -> no impact
So we are seriously thinking about to take this into production.
I have also looked at BI environment but concluded that there was nothing to gain.
Unfortunately our infocubes are well build meaning that the fact tables contains the actual data and the corresponding dimension tables only the surrogate IDu2019s (SIDu2019s).
Those dimension tables are actually very small (64k) and not suitable for index compression.
Next step will be some Workflow tables.
Fe:
SWW_CONT~0                   INDEX        PSAPFIN           26.583.040
SWPNODELOG~0                 INDEX        PSAPFIN           15.589.376
SWWLOGHIST~0                 INDEX        PSAPFIN           13.353.984
SWWLOGHIST~1                 INDEX        PSAPFIN            8.642.560
SWW_CONTOB~0                 INDEX        PSAPFIN            8.488.960
SWPSTEPLOG~0                 INDEX        PSAPFIN            6.808.576
SWW_CONTOB~A                 INDEX        PSAPFIN            6.707.200
SWWLOGHIST~2                 INDEX        PSAPFIN            6.507.520
SWW_WI2OBJ~Z01               INDEX        PSAPFIN            2.777.088
SWW_WI2OBJ~0                 INDEX        PSAPFIN            2.399.232
SWWWIHEAD~E                  INDEX        PSAPFIN            2.352.128
SWP_NODEWI~0                 INDEX        PSAPFIN            2.304.000
SWW_WI2OBJ~001               INDEX        PSAPFIN            2.289.664
SWWWIHEAD~A                  INDEX        PSAPFIN            2.144.256
SWPNODE~0                    INDEX        PSAPFIN            2.007.040
SWWWIRET~0                   INDEX        PSAPFIN            2.004.992
SWW_WI2OBJ~002               INDEX        PSAPFIN            1.907.712
If you would like to know, I can post the results on workflow tables (indexes) on ECC6 environment.
Please rewards some point if you like.
Regards,
Stephan van Loon

Update statistic error "BR0301E SQL error -904 at location ..."

How do I fix this error in when running update statistics in DB13?
XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX
BR0886E Checking/collecting statistics failed for index SAPEWD./BIC/DZEW_C0055~01
BR0280I BRCONNECT thread 2: time stamp: 2007-08-10 07.24.29
BR0850I 6 of 87 objects processed - 0.051 of 0.745 units done
BR0204I Percentage done: 6.90%, estimated end time: 7:24
BR0001I ***_______________________________________________
BR0280I BRCONNECT thread 2: time stamp: 2007-08-10 07.24.29
BR0301E SQL error -904 at location stats_ind_collect-2
ORA-00904: : invalid identifier
ORA-06512: at "SYS.DBMS_STATS", line 8426
ORA-06512: at "SYS.DBMS_STATS", line 8446
ORA-06512: at line 1
BR0886E Checking/collecting statistics failed for index SAPEWD./BIC/DZEW_C0056~0
BR0280I BRCONNECT thread 2: time stamp: 2007-08-10 07.24.29
BR0301E SQL error -904 at location stats_ind_collect-2
ORA-00904: : invalid identifier
ORA-06512: at "SYS.DBMS_STATS", line 8426
ORA-06512: at "SYS.DBMS_STATS", line 8446
ORA-06512: at line 1
BR0886E Checking/collecting statistics failed for index SAPEWD./BIC/DZEW_C0056~01
BR0280I BRCONNECT thread 2: time stamp: 2007-08-10 07.24.29
BR0301E SQL error -904 at location stats_ind_collect-2
XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX

Hi,
with 9.2.0.7 there is a bug with dbms_stats you should then apply the note
Note 898244 - ORA-904 with the DBMS_STATS package
you have to install the patch 4627335 or patchset 9.2.0.8 and run @?/rdbms/admin/prvtstat.plb afterwhile
Thanks

Brconnect check DB

Hi,
I am trying to execute "CheckDB" & "Update Statistics" in DB13, and
getting following error:
Job started
Step 001 started (program RSDBAJOB, variant &0000000001978, user ID JAGADISHC)
No application server on database host - rsh will be used
Execute logical command BRCONNECT On host dbRP1
Parameters: -u / -c -f check
BR0801I BRCONNECT 6.40 (15)
BR0252E Function fopen() failed for '/oracle/RP1/sapcheck/cectkkap.chk' at location main-9
BR0253E errno 2: No such file or directory
BR0121E Processing log file /oracle/RP1/sapcheck/cectkkap.chk failed
BR0806I End of BRCONNECT processing: cectkkap.chk2010-03-11 12.32.17
BR0280I BRCONNECT time stamp: 2010-03-11 12.32.17
BR0804I BRCONNECT terminated with errors
External program terminated with exit code 3
BRCONNECT returned error status E
Job finished
Regards,
Jagadish

Hello,
Have you read and applied the note I mentioned?
> orard1 dba 8055424 Oct 10 2004 brconnect
This is telling me nothing.
You do not show the authorizations for the program.
The group is NOT correct.
It may be that in that server, instead of setting the correct authorizations for the BR*Tools you change the authorization of the destination folder.
Please, read the note I mentioned
Please apply the note I mentioned.
Then, let us know.

Harmful statistics in DB13

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