RE: ORA-1555

From: Naveen Nahata <naveen_nahata_at_mindtree.com>
Date: Mon, 02 Sep 2002 08:28:21 -0800
Message-ID: <F001.004C5952.20020902082821@fatcity.com>

Sunny,

During the hot backup, Oracle uses Log files and Rollback segments extensively if writes are being performed against the objects in the tablespace currently in HOT BACKUP.

That explains ORA-1555 because the data in the rollback segments gets overwritten pretty soon(causing problems for selects), and lack of avaliability of Rollback segments(During insert and updates)

Add a few more rollback segments and you will not have this problem

Naveen

-----Original Message-----
From: Sunny Verghese [mailto:vsgeorge70@yahoo.com]
Sent: Monday, September 02, 2002 8:33 PM
To: Multiple recipients of list ORACLE-L
Subject: ORA-1555

Hello,

We're trying to understand the reason behind this !!!

When we run a specific job against the database when it is in noarchivelog mode, it completes without a problem.

When we run the same job after we switch the database to Archivelog mode (and during a hot backup), we're seeing ORA-1555's (consistently :!!!).

Any ideas ???

Thanks,

Sunny

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Author: Naveen Nahata
  INET: naveen_nahata_at_mindtree.com

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Received on Mon Sep 02 2002 - 11:28:21 CDT