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Re:Problem in rollback segment

From: <dgoulet_at_vicr.com>
Date: Thu, 03 Jan 2002 08:26:47 -0800
Message-ID: <F001.003E5DCB.20020103065018@fatcity.com>

Smells like a software coding problem on the client side. Can you provide additional information on how the DB is getting updated? Some programmers/programs do a 'lock table <tablename> in exclusive mode' before inserting/deleting/updating which is totally unnecessary & can cause your problem. There are two init parameters that can have an effect as well. Serializable which controls when table locks are acquired during read operations and row_locking which controls when row locks are acquired during update operations.

Dick Goulet

____________________Reply Separator____________________
Author: Bathma Sivaraj <Bathma.Sivaraj_at_originindia.com>
Date:       1/3/2002 5:00 AM

Dear All,

        Whenever any insert is made in a particular table, one row exclusive lock attained by Oracle, additionally one of the rollback segment is exclusively getting locked.
Also no one can insert into the table till the first transaction is committed or rollbacked. Could anyone explain why this rollbacksegment is exclusively getting locked, so also Oracle is preventing inserting records into the table. FYIm overall there are 20 rollback segments are configured for the rollback tablespace.

Thanks and Regards,
Bathmasivaraj A,

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<P><FONT SIZE=2 FACE="Arial">Dear All,</FONT>
</P>

<P>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <FONT SIZE=2 FACE="Arial">Whenever
any insert is made in a particular table, one row exclusive lock attained by Oracle, additionally one of the rollback segment is exclusively getting locked.</FONT></P>

<P><FONT SIZE=2 FACE="Arial">Also no one can insert into the table till the
first transaction is committed or rollbacked. Could anyone explain why this rollbacksegment is exclusively getting locked, so also Oracle is preventing inserting records into the table. FYIm overall there are 20 rollback segments are configured for the rollback tablespace.</FONT></P>

<P><B><I><FONT COLOR="#008080" SIZE=2 FACE="Times New Roman">Thanks and
Regards,</FONT></I></B>
<BR><B><FONT COLOR="#008080" SIZE=2 FACE="Times New Roman">Bathmasivaraj
A,</FONT></B>
</P>

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Received on Thu Jan 03 2002 - 10:26:47 CST

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