I want to get the stale stats for Table resides at APPS schema. Is there is any table or view exists to get the details like DBA_STALE_STATS or anything? Currently I am checking LAST_ANALYZED column from DBA_TABLES?
View 2 RepliesWhy do we gather table statistics manually ?Is it because of database performance.
I know In Oracle Database 10g, Automatic Optimizer Statistics Collection reduces the likelihood of poorly performing SQL statements due to stale or invalid statistics and enhances SQL execution performance by providing optimal input to the query optimizer.
Optimizer gathers statistics when 10% table rows have been changed.
I use the following query to find out the remaining time to complete the table statistics which is running currently.
SELECT SID, SERIAL#, opname, SOFAR, TOTALWORK,username,context,
ROUND(SOFAR/TOTALWORK*100,2) COMPLETE
FROM V$SESSION_LONGOPS
WHERE
TOTALWORK != 0
AND SOFAR != TOTALWORK
order by 1;
SOFAR column shows 9325 and totalwork column shows 12287.How to calculate the columns in terms of hours and minutes ?
And also sometime the query never shows the output of the query for the current running query.
I am connect to remote database with a user named 'TEST', this user has dba privileges. I am not able to gather the statistics of neither test schema nor for any table that exists in this schema.
SQL> EXEC dbms_stats.gather_schema_stats('TEST', cascade=>TRUE);
BEGIN dbms_stats.gather_schema_stats('TEST', cascade=>TRUE); END;
*
ERROR at line 1:
ORA-44004: invalid qualified SQL name
ORA-06512: at "SYS.DBMS_STATS", line 13210
ORA-06512: at "SYS.DBMS_STATS", line 13556
ORA-06512: at "SYS.DBMS_STATS", line 13634
ORA-06512: at "SYS.DBMS_STATS", line 13593
ORA-06512: at line 1
[code]....
Is there any script that give us output of all Stale Statistics in Oracle Database
View 8 Replies View Relatedthe importance of refreshing the stale statistics in oracle database and also how often we should do this?
View 3 Replies View RelatedWhat privileges is required to gather statistics of oracle database using DBMS_STATS/ANALYZE command.
View 1 Replies View Related,I need to view database statistics after executing SQL> exec dbms_stats.gather_database_stats;is that really possible? how to check it?
View 7 Replies View Related if there are any problems with updating statistics? My manager told me that they had big performance issue when they updated the statistics of whole database. Is this a rare case?
I know the advantages of updating statistics,but are there any dis-advantages?
What is the scenario, we should use the new feature of 11g called-Pending Statistics.
Eg:-
EXEC DBMS_STATS.set_table_prefs ('SCOTT', 'EMP', 'PUBLISH', 'false');
I am looking at a performance issue at the moment and trying to replicate on a test system. I am initially looking at the impact of upto-date statistics on the main schema's objects.
For this I wanted to:
first run the batch with whatever stats were present in the database Flashback the db to before the batch . Gather stats Re-run the batch with updated stats and compare results.
However, I inadvertently ran the stats job before running the load the first time! I have the SCN from when the environment was set up like production (ie before the stats were run) so am I correct in saying that if I flashback to this point then the stats will be "old" and I can just run the batch then? I know I can verify this when I Flashback the database by looking at LAST_ANALYZED on tables etc but it would be good to know this before hand as it's a 12 hour batch.
I have a table which have 300+ columns and have 13 million rows. It is on a 32 kb block size. This is a table in data ware house environment. There no# of rows in the table haven't changed much but I see that the time taken to collect statistics have increased significantly.Initially it took only 15 minutes (with the same 13M rows) now it runs for 4+ hours. The max parallel servers is 4 (which is unchanged). The table is not partitioned.
OS: HP UX Itanium
Database: Oracle 11g (11.2.0.2)
Command is:
exec dbms_stats.gather_table_stats(ownname=>'ABC',tabname=>'ABC_LOAD',estimate_percent=>dbms_stats.auto_sample_size,cascade=>TRUE,DEGREE=>dbms_stats.auto_degree);
I would like to understand:
1) What could have been the causes of this change in time. 15 minutes to 4+hours ?
2) How can we gather statistics of huge table at a faster rate?
I use oracle 9i. After doing execution ,process, how can I know which table in the oracle have been update/modify?
View 18 Replies View Relatedknow whether i can see anywhere all executed Statements in my DB (Deletes, Updates...)?
perhaps in a particular table or in Oracle Enterprise Manager?
how many rows certain tables have.
updating the statistics for a table (with GATER_TABLE_STATS) and using NUM_ROWS then. This works fine for me as long as I am the owner of the table, but when someone else is, I always get this error: ORA-20000: Table does not exist or insufficient privileges.what privileges do I need to use GATHER_ TABLE_ STATS on all Tables, which were created by Users?
when I tried to use ANALYZE TABLE TEST_TABLE COMPUTE STATISTICS on a certain table I got the following error: a view is not appropriate here. The strange thing is, TEST_TABLE is not a view (at least it is not listed in ALL_VIEWS and is listed in ALL_TABLES, so it cant be a view right?).
Besides, is there another way to gather Table Statistics (not using Analyze Table or Gather_Table_Stats)?
I have created materialized view which hold few million records.Should i have to analyse the view and compute the statistics after i create the materialized view?
Also,just in case i need further indexing,should i have to take the statistics for the table again??
What privilege is required to gather table statistics using dbms_stats ?
View 2 Replies View RelatedFrom the below query i found that there are some stale stats for 3 tables.
=================================
select table_name, stale_stats, last_analyzed
from dba_tab_statistics
where owner= 'SYSADM' and stale_stats='YES'
order by last_analyzed desc
I collect stats for those above 3 tables with dbms_stats.gather_table_stats().But no luck.After collection of stats immediately I ran the above query.But still it is showing there are stale stats for 3 tables.
how can I change "STALE-STATS" status, so that optimizer can use the updated stats eficiently.
I am using Oracle 11g R2 version.I want to import the DB statistics. But i am getting an exception when i execute the command DBMS_STATS.IMPORT_SCHEMA_STATS ('user1','STATS_INFO', '','', TRUE, FALSE).
The error is ORA-20000: no statistics are imported ORA-06512: at "SYS.DBMS_STATS", line 10603 ORA-06512: at line 1.
The privileges 'ANALYZE ANY' and 'ANALYZE ANY DICTIONARY' is already given to the user.Also i executed this command as sys. But still error occurs.
Same command is successfully executed in Oracle 10g. Is there any difference in importing the statistics in Oracle 10g and 11g ?
I was about to move some tables from one table space to another but it seems it is not possible to move partitioned tables between table spaces of different block sizes.
So far the only option I have is to export and then import back the data.
know if there is any way to move a partitioned table between table spaces of different block size?
We deleted millions of records from a table.
1.Is it necessary to reorganize a table and index after the deletion of records from table ? Because i see some change in table size after table and index reorganization.
2.Will re org table and index improve the database performance ?
My manager is asking to create a SQL scrip, which will provide following information.
Our database is 9.2.0.7.0 on Windows 2000 Server
-How many records Insert / Update or Delete daily in my Oracle database?
- Check Archive log / Redo Log switching information?
-Check database growth ?
i am trying to install Oracle 10.10.2.0 on Windows Server 2003 standard x64 Edition Service Pack, but when i try to run the installer or open DVD it gives me below error.
"The image file D: is Valid, but is for a machine type other than the current machine."
I was trying to delete the database in the test server. When i was deleting listener was already stopped, i continued deleting using dbca, it shown me some alert that datafiles cant be deleted because system could't find database, since listner was stopped so only service was deleted(the one showing in the windows administrator toolsservicesOracleServiceTEST).
All the datafile parameter files are still there. How can i delete the datafiles and parameter files belongs to that database or how to create the deleted service, so that i will start the listener and do the complete deleting of the database.
I am trying to find the unix process for one of my application in the database but I am unable to view the same. To simulate, I did the following.
1. My database runs on different server.
2. I invoked "sqlplus" from another unix box to login to the database.
3. I found that the process id (ps -ef |grep sqlplus).
4. When I execute the below mentioned query it does not display the process id that I am looking for. But the osuser, username, program and machine details are correct. How can I know the process details from the database?
SELECT SYS.GV_$SESSION.OSUSER, SYS.GV_$SESSION.USERNAME, SYS.GV_$PROCESS.SPID,
SYS.GV_$SESSION.MACHINE, SYS.GV_$SESSION.PROGRAM,
SYS.GV_$PROCESS.PROGRAM ,SYS.GV_$SESSION.SQL_ID
FROM
SYS.GV_$PROCESS, SYS.GV_$SESSION
WHERE
SYS.GV_$PROCESS.ADDR=SYS.GV_$SESSION.PADDR and SYS.GV_$SESSION.USERNAME='TEST'
and SYS.GV_$SESSION.MACHINE like '%hostname%'
While creating the index we are getting the error "ORA-00603: ORACLE server session terminated by fatal error".
We have the space in tablespaces and also in the file systesm.
I want to install Oracle 11g R2 in windows 2008 64 bit server. How can I know whether my server is ready to install Oracle ie is all components are available in server or any patch is to be applied etc.
View 3 Replies View RelatedI'm trying to connect a oracle client application on the client machine to a remote oracle server on the server machine but i get a connection fail.
On the server machine I configured oracle server in the following way:
Installed oracle server. Created a database "DB_Test" with the database configuration assistant Created a LISTNER with the Oracle NET Manager with the following parameter:
Protocol: TCP/IP HOST: server pc hostname (ENZOVAIO) or server machine address ip (192.168.0.71) in the network lan Port Number: 1521 Created "dbtest" service with the Oracle NET Manager with with the following parameter:
Service Name: "dbtest" Protocol: TCP/IP HOST: server pc hostname (ENZOVAIO) or server machine address ip (192.168.0.71) in the network lan Port Number: 1521
All services on the server machine are running and I opened port number (1521) in the router. On the client machine I installed SQL PLUS and SQL Developer.
With SQL Plus as by the official documentation I have entered the following command:
CONNECT username/password@[//]host[:port][/service_name]. In my case is:
CONNECT SYSTEM/oracledb@//ENZOVAIO:1521/testdb.
With SQL Developer I have entered the same parameter.
But with both SQLPlus and SQL Developer the connection fails.
we have oracle server. we have to connect 500+ client machine to oracle server.
is it i need to install client version to all 500+ or any other shortcut way?
We performed image copy of production Oracle server (OS and instances) to a backup server. After a few weeks, we try to restore a latest Oracle database backup from production server to backup server. As we know, Oracle instance must be unique on the network.
Even we log on to backup server and bring up the instance, I think that still point to production instance since all init file, TNSNAMES.ora and listener file are still same. If we restore the database, we will end up bring down the production instance and restore on top of productions. How to change instance name on backup server including TNSNAMES, sqlnet, listener files in order for us to restore Oracle database from production to backup server?