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Re: ORA-01555 Mystery (Help)

From: <Rajesh.Rao_at_chase.com>
Date: Fri, 25 Jan 2002 09:20:03 -0800
Message-ID: <F001.003FB575.20020125090720@fatcity.com>

Is it a simple select statement, or is it a cursor select in an PL/SQL block? Does her transaction itself perform any DML on those tables?

Raj

Walter K <alden14004_at_yahoo.com>@fatcity.com on 01/25/2002 11:15:26 AM

Please respond to ORACLE-L_at_fatcity.com

Sent by: root_at_fatcity.com

To: Multiple recipients of list ORACLE-L <ORACLE-L_at_fatcity.com> cc:

Hi,

A user in our data warehousing group is running into the old ORA-01555 (snapshot too old) error every time she runs a massive (20 million rows) select against one table via a view. I confirmed that the view only translates to the one table.

The user swears that no one would be making any updates/deletes to the table she is selecting from. I suggested she lock the table in exclusive mode, prior to running her massive select to guarantee no one else could change the data in the table and cause the triggering of the 1555 error. Locking the table was a viable option because it's a staging table in the warehouse itself. She locked the table in exclusive mode last night and it locked; fired off her query, and it failed 5 hours later with the 1555 error again.

I'm stumped on this. I just don't see how this is possible. Any suggestions?

Thanks!!!
-w



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Received on Fri Jan 25 2002 - 11:20:03 CST

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