Server Administration :: Stale Statistics In Oracle Database?
Jun 7, 2012Is there any script that give us output of all Stale Statistics in Oracle Database
View 8 RepliesIs there any script that give us output of all Stale Statistics in Oracle Database
View 8 Repliesthe importance of refreshing the stale statistics in oracle database and also how often we should do this?
View 3 Replies View RelatedFrom the below query i found that there are some stale stats for 3 tables.
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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 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 RelatedI 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 Replies View RelatedWhat privileges is required to gather statistics of oracle database using DBMS_STATS/ANALYZE command.
View 1 Replies View RelatedWhy 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.
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 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]....
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 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 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%'
I recently installed Oracle 10g on my windows Xp laptop. It has become considerably slow since then. I want to start the database server only when I need it, and not every time I start my laptop. I looked around in OEM and did found a way.
View 5 Replies View RelatedI am connected as System. It was the only user I set-up a password when installed the database on personal computer.
SQL> alter user sys identified by mypass007
2 /
User altered.
SQL> connect sys/mypass007
ERROR:
ORA-28009: connection as SYS should be as SYSDBA or SYSOPER
[code]...
SQL> conn sysoper/mypass007
ERROR:
ORA-01017: invalid username/password; logon denied
I have some requirement wherein I need to install Oracle 9i database server (9.2.0.7). I am not getting it on Oracle website. where can I get the download.
View 1 Replies View Relatedi do know how change the database but can any one assist me how to chnage SID of database which in windows 2003 server?
View 1 Replies View RelatedHow to create own database in oracle 10g. I want to create new database in oracle.
View 10 Replies View Relatedhow can we find the size of the oracle database 11g.
View 2 Replies View Relatedhow to create a new database in oracle??
View 2 Replies View RelatedI need to upgrade an oracle 8i database on HP-Unix server to Oracle 11g on Linux server, whether to upgrade it first to 10g linux and then to 11g ?
View 4 Replies View RelatedI have installed oracle 10g software and created Database on RHEL 4. when i run the run.sql its successively done but im not getting tables. whats the prob.
View 17 Replies View Relatedinstalled and configured oracle 12.1.0.1.0 on linux and i noticed there is no emctl? I went through the oracle docs and i see no references as what to use,
View 12 Replies View RelatedI am trying to upgrade the oracle 9.2.0.8 database in oracle 11.2.0.2. I have installed the new oracle home for 11g and after running the pre-upgrade script and setting the all environment variable like oracle base, oracle home, oracle sid and ora_nls
i am running the dbua but after click on finish button it's do the processing of 2% but after that i get
-------------------------------------------------
ORA-12709 error while loading create
database character set
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I have oracle 10g running on oracle ASM 11.1, I want to know that if i install oracle 11gr2 database , can i use oracle 11.1 ASM which is already installed ?
View 5 Replies View RelatedI have three oracle 10g databases (db1, db2, db3)on a linux box.
A command at the OS level to find total cpu used by each of the above databases.
I installed Oracle 11g and created a test database in that the default count should be 4196... but it is 4143.. some packages are missing.. even when i'm creating materialized view it is showing some error that packages are missing. what can i do for that? Is my oracle s/w corrupted ? even when i downloaded from oracle site it also shows the same count.
View 1 Replies View RelatedI'm getting the error messaage:
Database Connection failure. Reason: java.sql.SQLException: ORA-01034: ORACLE not available ORA-27101: shared memory realm does not exist SVR4 Error: 2: No such file or directory
I'm not an Oracle expert, but I have research a little and seems that the SID could be wrong or that the DB is down, in fact I have already checked trhe server but everything seems normal to me.
Yesterday i installed oracle 11g r2 by default i installed database Oracle with the installation .but today i tried to create the database with the name green tat also completed successfully..the problem is in startup
export oracle_sid=green
sqlplus '/ as sysdba'
startup
database mounted
select instance_name from v$instance; But it SHowing the instance name as Oracle...i tried with the other method also
export oracle_sid=green
sqlplus /nolog
conn sys/b123 as sysdba
database mounted
select instance_name from V$parameter;
and it shows instance name as green..i tried to see the datafile location for green database
select file_name from dba_data_files; it shows the orcl datafile locations.