Re: Huge number of DBA_DDL_LOCKS

From: Juan Cachito Reyes Pacheco <jreyes_at_dazasoftware.com>
Date: Thu, 4 Mar 2004 11:15:50 -0400
Message-ID: <007901c401fb$9b1c03a0$2501a8c0@dazasoftware.com>

This could be a problem, but not neccesarily For example in a database with 29 sessions I have this select lock_type,count(*) from dba_locks group by lock_type

LOCK_TYPE                  COUNT(*)
-------------------------- ---------------------------------------
Media Recovery             11
Redo Thread                1
Temp Segment               1
Transaction                5
XR                         1

As you see there are several type of locks

• Original Message ----- From: "Jay" <jaysingh1_at_optonline.net> To: <oracle-l_at_freelists.org> Sent: Thursday, March 04, 2004 12:20 AM Subject: Huge number of DBA_DDL_LOCKS

> Dear All,
>
> Why these many DDL locks? Is something wrong in this environment? Or it is
> normal to have 20k+ locks?
>
> If it is not okay where should I start investigating this issue?
>
> Oracle8i Enterprise Edition Release 8.1.7.3.0 - Production
> With the Partitioning and Parallel Server options
> JServer Release 8.1.7.3.0 - Production
>
> SQL> select count(*) from dba_ddl_locks;
>
> COUNT(*)
> ----------
> 21318
>
> SQL> select count(*) from dba_dml_locks;
>
> COUNT(*)
> ----------
> 3
>
> SQL>
>
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Received on Thu Mar 04 2004 - 10:20:08 CST