How I gather statistics via OEM db control?
Hi,
According to the documentation,
I may setup a job to automatically
gather statistics for all the segments in my database
via EM database control.
I cant find any documentation on how to do this.
I did find a link in EM which will allow me
to gather statistics ad hoc but I want it automated.
Thanks,
-moi
There should be a stats gathering program scheduled
by default. Check under Database > Administration >
Scheduler > Jobs in Database Control. The job is called
SYS.GATHER_STATS_JOB. You will need to login as SYS to
see the job. The job runs the
DBMS_STATS.GATHER_DATABASE_STATS_JOB_PROC procedure.
You can, of course, schedule any other
DBMS_STATS.GATHER_* procedures if you prefer.
Hope this helps.
Kailash.
Similar Messages
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Hi,
I launched a job to gather statistics on just one schema on my DATABASE in OEM. How can I identify it's session ? Many thanks before.You can try below query:
select s.username, s.sid,s.serial#, sql.sql_Text
from v$session s, v$sqlarea sql
where s.sql_address = sql.address and s.sql_hash_value = sql.hash_value and
s.username = '&username' and lower(sql.sql_text) like '%dbms_stats%'
Best Regards
Krystian Zieja / mob -
Hi folks!
I gathered statistcs in one schema with folowing options:
exec dbms_stats.gather_schema_stats(user,method_opt=>'FOR ALL COLUMNS SIZE 1',estimate_percent=>null,gather_temp=>false,cascade=>true,degree=>dbms_stats.auto_degree);Then:
exec dbms_stats.gather_schema_stats(user,method_opt=>'FOR ALL COLUMNS SIZE SKEWONLY',estimate_percent=>null,gather_temp=>false,cascade=>true,degree=>dbms_stats.auto_degree);Now, I turn on table monitoring and suggest to gather statistics (per day) with that parameters:
dbms_stats.gather_schema_stats(ownname =>user, options=>'GATHER STALE', gather_temp => false, cascade => true, estimate_percent => 100, degree => dbms_stats.auto_degree);Default method_opt is FOR ALL COLUMNS SIZE AUTO.
Now I got better perfomance. How often I need to gather statstics?
Thanks in advance.
Best regards, Pavel.Thanks, I also think so.
Little test-case:
SQL>exec dbms_stats.gather_table_stats(user,'TABLE1',estimate_percent=>null);
Elapsed: 00:00:01.03
SQL> select column_name,num_distinct,sample_size from user_tab_col_statistics where table_name='TABLE1;
COLUMN_NAME NUM_DISTINCT SAMPLE_SIZE
DISGRP 7944 33204
DISMBR 18948 33204
TYPE 4 33204
Elapsed: 00:00:00.03
SQL> exec dbms_stats.gather_table_stats(user,'TABLE1',estimate_percent=>10);
PL/SQL procedure successfully completed.
Elapsed: 00:00:01.78
SQL> select column_name,num_distinct,sample_size from user_tab_col_statistics where table_name='TABLE1';
COLUMN_NAME NUM_DISTINCT SAMPLE_SIZE
DISGRP 3836 3269
DISMBR 13686 3269
TYPE 4 3269
Elapsed: 00:00:00.00
SQL> exec dbms_stats.gather_table_stats(user,'TABLE1',estimate_percent=>100);
PL/SQL procedure successfully completed.
Elapsed: 00:00:00.52
SQL> select column_name,num_distinct,sample_size from user_tab_col_statistics where table_name='TABLE1';
COLUMN_NAME NUM_DISTINCT SAMPLE_SIZE
DISGRP 7944 33204
DISMBR 18948 33204
TYPE 4 33204
Elapsed: 00:00:00.01
SQL> exec dbms_stats.gather_table_stats(user,'TABLE1',estimate_percent=>dbms_stats.auto_sample_size);
PL/SQL procedure successfully completed.
Elapsed: 00:00:00.53
SQL> select column_name,num_distinct,sample_size from user_tab_col_statistics where table_name='TABLE1';
COLUMN_NAME NUM_DISTINCT SAMPLE_SIZE
DISGRP 8448 5568
DISMBR 18948 33204
TYPE 4 5568
Elapsed: 00:00:00.00
SQL> select count(distinct disgrp) from TABLE1;
COUNT(DISTINCTDISGRP)
7944
Elapsed: 00:00:00.02
SQL> select count(distinct dismbr) from TABLE1;
COUNT(DISTINCTDISMBR)
18948
Elapsed: 00:00:00.03
SQL> select count(distinct type) from TABLE1;
COUNT(DISTINCTTYPE)
4
Elapsed: 00:00:00.01
SQL> select column_name,num_distinct,sample_size from user_tab_col_statistics where table_name='TABLE2';
COLUMN_NAME NUM_DISTINCT SAMPLE_SIZE
ID 219120 219120
UNIT 114762 219120
LOC 61 219120
TIS 1230 219120
RTYP 3 219120
Elapsed: 00:00:00.02
SQL> exec dbms_stats.gather_table_stats(user,'TABLE2',estimate_percent=>null);
PL/SQL procedure successfully completed.
Elapsed: 00:00:07.61
SQL> select column_name,num_distinct,sample_size from user_tab_col_statistics where table_name='TABLE2';
COLUMN_NAME NUM_DISTINCT SAMPLE_SIZE
ID 219120 219120
UNIT 114762 219120
LOC 61 219120
TIS 1230 219120
RTYP 3 219120
Elapsed: 00:00:00.00
SQL> exec dbms_stats.gather_table_stats(user,'TABLE2',estimate_percent=>10);
PL/SQL procedure successfully completed.
Elapsed: 00:00:02.90
SQL> select column_name,num_distinct,sample_size from user_tab_col_statistics where table_name='TABLE2';
COLUMN_NAME NUM_DISTINCT SAMPLE_SIZE
ID 219950 21995
UNIT 70812 21995
LOC 43 21995
TIS 496 21995
RTYP 3 21995
Elapsed: 00:00:00.00
SQL> exec dbms_stats.gather_table_stats(user,'TABLE2',estimate_percent=>50);
PL/SQL procedure successfully completed.
Elapsed: 00:00:03.70
SQL> select column_name,num_distinct,sample_size from user_tab_col_statistics where table_name='TABLE2';
COLUMN_NAME NUM_DISTINCT SAMPLE_SIZE
ID 218716 109358
UNIT 92338 109426
LOC 61 109455
TIS 994 109567
RTYP 3 109422
Elapsed: 00:00:00.00
SQL> exec dbms_stats.gather_table_stats(user,'COMPS',estimate_percent=>100);
PL/SQL procedure successfully completed.
Elapsed: 00:00:04.37
SQL> select column_name,num_distinct,sample_size from user_tab_col_statistics where table_name='TABLE2';
COLUMN_NAME NUM_DISTINCT SAMPLE_SIZE
ID 219120 219120
UNIT 114762 219120
LOC 61 219120
TIS 1230 219120
RTYP 3 219120
Elapsed: 00:00:00.00
SQL> exec dbms_stats.gather_table_stats(user,'COMPS',estimate_percent=>dbms_stats.auto_sample_size);
PL/SQL procedure successfully completed.
Elapsed: 00:00:03.81
SQL> select column_name,num_distinct,sample_size from user_tab_col_statistics where table_name='TABLE2';
COLUMN_NAME NUM_DISTINCT SAMPLE_SIZE
ID 217968 54492
UNIT 122237 54492
LOC 31 5495
TIS 240 5495
RTYP 3 5495
Elapsed: 00:00:00.01
SQL> select count(distinct id) from TABLE2;
COUNT(DISTINCTID)
219120
Elapsed: 00:00:00.27
SQL> select count(distinct unit) from TABLE2;
COUNT(DISTINCTUNIT)
114762
Elapsed: 00:00:00.30
SQL> select count(distinct loc) from TABLE2;
COUNT(DISTINCTLOC)
61
Elapsed: 00:00:00.06
SQL> select count(distinct tis) from TABLE2;
COUNT(DISTINCTTIS)
1230
Elapsed: 00:00:00.09In that situation, auto_sample_size not bad? But estimate_percent=>100 - exact.
Best regards, Pavel. -
How to Gather Statistics of Tables and Indexes
Hi all,
Plz help me in Gathering Statistics of Tables and Indexes.
Thanksfor tables
exec dbms_stats.gather_table_stats('SCOTT', 'EMPLOYEES');
for indexes
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check this link for detail
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The Learning Management ERD comes in handy which can be accessed here:
Log into Oracle Support (http://support.oracle.com)
|__ Knowledge
|__ Online Documentation
|__ EBS eTRM
|__ Select Database (eBS version)
|__ FND Data
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|__Learning Management ERD
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1.Could you please give me the step by step procedure to automate the datafile addition via OEM while tablespace crossed its threshold limit? - DB(11gr2) is under OEM monitoring.
2.How to reload the database information after any configure change in OEM?
Oracle Enterprise Manager Cloud Control 12c
Thanks.
BalaHi Mark/All,
Please find the below for my answer.
1.Could you please give me the step by step procedure to automate the datafile addition via OEM while tablespace crossed its threshold limit? - DB(11gr2) is under OEM monitoring.
Have you considered using AUTOEXTEND? - Yes, Since we have TB of storage available to use for datafiles.
2.How to reload the database information after any configure change in OEM?
Could you expand on this please? - I changed the tablespace threshold limit from 85% to 65% for validation, but it didn't notify the tablespace issue throw mail[And it seems the database info Collected date is yesterday so i like to recollect the database information from OEM].
Thanks
Bala -
Gather statistics for schema at OEM
Hi,
How do we gather schema statistics thru OEM?in V10+ once every 24 hours Oracle collects statistics by default job; so you do not need to take additional action
Handle: 785301
Status Level: Newbie
Registered: Jul 29, 2010
Total Posts: 36
Total Questions: 17 (17 unresolved)
so many questions without ANY answers.
http://forums.oracle.com/forums/ann.jspa?annID=718
Edited by: sb92075 on Dec 10, 2010 10:12 AM -
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Hello,
currently we have 130 databases, say, if I want to pick out any database currently NOT in archivelog mode, is there a quick way to find out ?
by using OEM grid control
or
some trick similar,
but really don't need to check each database manually.
thank you very much!This query works in 12c - please run as SYSMAN.
It is based on undocumented assumptions though +( AND key_value = 'NOARCHIVELOG')+.
SELECT *
FROM SYSMAN.MGMT$GROUP_DERIVED_MEMBERSHIPS O ,
SYSMAN.MGMT$TARGET T ,
sysman.MGMT$AVAILABILITY_CURRENT st
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o.member_target_type IN ('oracle_database', 'rac_database')
AND ( t.target_type ='rac_database'
OR (t.target_type ='oracle_database'
AND t.type_qualifier3 != 'RACINST'))
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AND t.target_guid = st.target_guid
AND st.availability_status = 'Target Up'
AND ( EXISTS
(SELECT *
FROM sysman.mgmt$metric_current i
WHERE I.TARGET_GUID = O.MEMBER_TARGET_GUID
AND metric_name = 'archFull'
AND Metric_Column = 'archTotal'
AND metric_label = 'Archive Area'
AND column_label = 'Total Archive Area (KB)'
AND key_value = 'NOARCHIVELOG'
));Another way to achieve the goal is to push extended metrics (SELECT LOG_MODE FROM V$DATABASE) on each DB, and monitor the values they return to the repository. This is an example for a (slightly) different problem - http://iiotzov.wordpress.com/2012/08/08/how-to-use-the-new-oem-12c-metric-extensions-to-enforce-enterprise-wide-custom-policies .
OEM Repository has many other great uses as well - http://iiotzov.files.wordpress.com/2012/05/oem-repository-a-second-look.doc , http://iiotzov.files.wordpress.com/2011/08/iotzov_oem_repository.pdf
Iordan Iotzov
http://iiotzov.wordpress.com/ -
How to inegrate OID with OEM 12c Cloud Control
Hi All,
Can anyone please tell me how can I integrate OID with OEM 12c Cloud Control. As we can integrate our weblogic administration console with OID,is it possible to integrate OEM cloud control with OID?
Thanks in Advance!!Hi,
Please find the URL below:
http://docs.oracle.com/cd/E24628_01/doc.121/e24473/security.htm#BABGAGIJ
Following section will provide you the information for OID intergration:
13.2.5 Oracle Internet Directory (OID)
You can implement an OID-based authentication scheme to have Enterprise Manager authenticate users against the OID.
Running the emctl config auth oid command on the OMS creates a WebLogic authentication provider of type OracleInternetDirectoryAuthenticator that uses the configuration parameter values specified by the command. Any configuration values not specified retain the default values. Tuning and modification of advanced OID configuration parameters is carried out through the WebLogic Server Administration Console and not the emctl config auth oid command.
Prerequisites
Oracle Internet Directory LDAP server is set up and running.
Run the emctl config auth oid command on each OMS.
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where:
ldap_host: LDAP host name
ldap_port: LDAP port
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ldap_credential: Password for the user specified by ldap_principal.
user_base_dn: The base distinguished name (DN) of the tree in the LDAP directory that contains users.
group_base_dn - The base distinguished name (DN) of the tree in the LDAP directory that contains groups.
Example:
emctl config auth oid -ldap_host "ldaphost" -ldap_port "3060" -ldap_principal "cn=orcladmin" -user_base_dn "cn=users,dc=us,dc=oracle,dc=com" -group_base_dn "cn=groups,dc=us,dc=oracle,dc=com" -ldap_credential "my_ldap_password" -sysman_pwd "my_sysman_password"
Stop the OMS.
emctl stop oms -all
Restart the OMS.
emctl start oms
Note:
For Enterprise Manager deployments consisting of multiple OMS instances, emctl config auth oid must be run on each OMS. Each OMS must be restarted in order for changes to take effect.
Testing the OID Configuration
Use the WebLogic Server Administration Console (Users and Groups tab) to check whether the OID configuration has been successful. To navigate to this tab, select Home/Summary of Security Realms/myrealm/Users and Groups. From the Users and Groups tab, you should see users and groups showing up from the OID.
Best Regards,
Venkat -
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Hi all,
I was able to install the Oracle Application Server (Infrastructure and BI and Forms) successfully on the another machine with the same specs. The application I installed on the 64-bit machine is a 32-bit Oracle Application Server.
Now, I tried to install the OEM Grid Control R2 (another 32-bit Oracle Software) on an identical 64-bit machine but had no luck. Ran linux32 bash before trying the install.
I always get the error "error in invoking target 'dm_on ioracle' of makefile 'OH/db10g/rdbms/lib/ins_rdbms.mk".
Please help me/guide me in this install if it is at all possible.
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MikeDid you read the installation docs?
Did you look up trying to do this on metalink before proceeding? -
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Hi,
I've downloaded OEM Grid Control for windows (32-bit) from oracle site.
This .zip files has 3 more .zip files eg
File Size
3822442.zip 510 MB (535,208,588 bytes)
3731596.zip 275 KB (282,502 bytes)
3731593.zip 510 MB (535,047,905 bytes)
Can you pls tell me which one is actual OEM Grid Control software, and what are the other .zip files ?
Pls email me at [email protected]
Your help greatly appretiated.
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cheers
Rob -
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We are in process for patching our OS from 5.3-01+APARs to 5.3-02 and usually we relink all our oracle products after OS patching.
I have notes for DB and AS but not for OEM GRID CONTROL.
Any help are appreciated.
Diego.I thnk you can run /u001/app/oracle/product/10.1.0.3_oms/bin/relink for relinking your binaries.
Regards,
http://askyogesh.com -
Hello,
i am facing following problem with the automatic gather statistics job which is running every night.
The jobs starts when the weeknight/weekend_maintenance_windows opens, runs approx. 30 minutes and rebuilds statistics for around 270 objects. But when we check the status of objects next morning or immediate after jobrun, we still find hundrets of objects with stale statistics. We are not facing any heavy performance problems, but i want to know why we found stale statistics. The job uses 30 minutes of the 480 minutes window, so in my opinion there is plenty of time for all objects to create new statistics.
Is this normal behaviour?
Can't find anything in metalink.
Systeminfo:
Host: HP-UX 11.31
DB: 10.2.0.4
Regards
UlliUlli,
uwaldt wrote:
Hello Randolf,
we check if column stale_stats contains a 'YES'. The column 'last_analyzed' is filled with a date.OK, and the date corresponds to the latest run of the automatic statistics gathering job or is it outdated? What is the content of the corresponding TABMODIFICATIONS view in that case?
After we check sthe SQL-script with the 'original' check via dbms_stats.gather_schema_stats, we see that there is a difference between all_tab/ind_statistics and the real value in tabmodifications.Apologies, but I'm not able to follow: What is the "difference between all_tab/ind_statistics and the real value in *_tab_modifications"? You mean to say that the list of objects marked as "STALE_STATS = YES" column differs from the output of the "LIST STALE" call?
But what shows grid-control if we check there for stale stats?Good question, I can't answer since I seldom use the GUI tools.
The next is, the developers in house argue with the all_tab/ind_statistics and blame the DBA's to do their housekeeping, especially if the users complain bad performance. I knew that the gather_job do his work, but we can't show it probable to the developers.This all sounds a bit odd. Two comments:
1. It is possible in 10g to lock the statistics of tables, so that the automatic statistics collection job doesn't touch them. It's quite unlikely since you have to invoke it manually/explicitly using DBMS_STATS.LOCK_TABLE/SCHEMA_STATS, but may be you want to check the column STATTYPE_LOCKED in the TABSTATISTICS views for those objects in question, just to make sure.
2. All the monitoring related information (*TABMODIFICATIONS/STALE_STATS column etc.) is usually only updated every three hours or if a call to DBMS_STATS.GATHER_STATS is performed. If you want to manually invoke the flush of the monitoring info, you can call DBMSSTATS.FLUSH_DATABASE_MONITORING_INFO to make sure that you look at the latest monitoring information available.
Above point might explain that you can spot differences/inconsistencies before/after calling DBMS_STATS.GATHER_SCHEMA_STATS to list the stale objects.
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/ -
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Is it also possible to access the ASM instance itself via the OEM? If so, what's the typical URL/port for access?
I have not seen this documented, and I wonder if it's possible to access the ASM instance via OEM after all, or can you view/manage ASM instance information only via SQL statements.
Thank you.
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Thanks. -
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I am getting error while installing OEM Grid control (with existing database) at OMS Configuration. So, I cancelled the installation and deleted all databases and started the instal again. I am still getting an error at OMS configuration.
I am trying to read through the threads here to see if anyone has solved it. I see a lot of threads on this topic but not sure how you guys resolved it.
Can anyone help here.
In the oracle installer, I see the message : The c:\oraclehomes\agent10g\cfgtoollogs\configToolfailedCommands" script contains all commans that failed, were skipped or cancelled ....
--in this file, all I see is:
rem Copyright (C)1999, 2006 Oracle
oracle.sysman.emcp.agent.AgentPlugIn
How should I proceed
Thanks
Ramya
Edited by: Ramya Reddy on Mar 9, 2009 5:25 PMgo to AOh\bin and run agentca -f and check agent status
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