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Users reading from rollback segments

From: Glenn Travis <Glenn.Travis_at_sas.com>
Date: Tue, 26 Feb 2002 11:38:28 -0800
Message-ID: <F001.00418EA8.20020226113828@fatcity.com>


Is there a way to tell if anyone is reading from the rollback segments?

I would like to manually issue 'alter rollback segment XXX shrink;', but do not want to do so if there are users reading read consistent data from the rollback space (thus giving them the ORA-01555 error).

Is there a way to check if the rollback segment is in use first?

Can I try to take it offline? Will it fail if there is someone reading from it?

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Author: Glenn Travis
  INET: Glenn.Travis_at_sas.com

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