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Analyze table hangs for hours [message #426130]

Wed, 14 October 2009 03:12

sundarfaq
Messages: 235
Registered: October 2007
Location: Chennai

Senior Member

Hi,

Analyze table hangs for hours (more than 6 hrs) using DBMS_STATS.GATHER_TABLE_STATS.At last we killed the session and then rerun it.it runs succesfully completed.

Why DBMS_STATS.GATHER_TABLE_STATS hangs for hours for some time?

is this issue arise due to the GATHER_STATS_JOB schedule or any other issue?

please help me.

Thanks,
Michael Holding

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Re: Analyze table hangs for hours [message #426136 is a reply to message #426130]

Wed, 14 October 2009 03:27

JRowbottom
Messages: 5933
Registered: June 2006
Location: Sunny North Yorkshire, ho...

Senior Member

Did you look at v$session_wait to see what the session was waiting on?

Did you check to see if it was being blocked by a lock?

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Re: Analyze table hangs for hours [message #426138 is a reply to message #426130]

Wed, 14 October 2009 03:29

Michel Cadot
Messages: 68716
Registered: March 2007
Location: Saint-Maur, France, https...

Senior Member
Account Moderator

Also have a look at v$session_longops.

Regards
Michel

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Re: Analyze table hangs for hours [message #426139 is a reply to message #426130]

Wed, 14 October 2009 03:30

balakrishnay
Messages: 54
Registered: September 2009
Location: Pune

Member

Hi,

select sum(bytes/1024/1024)"size" from dba_segments where segment_name='&name';

Give me the output of this ..

and more ever if the table size is too huge .. then you should use estimate_percent=>10

Regards

Bala

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