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ORA-22924: snapshot too old

HabibMar 30 2011 — edited Mar 31 2011
Hi

I am using Oracle XE on Fedora. While exporting a Schema I get following error.

EXP-00056: ORACLE error 1555 encountered
ORA-01555: snapshot too old: rollback segment number with name "" too small
ORA-22924: snapshot too old


Can someone please help me how to fix this.

Thanks

Habib
This post has been answered by oradba on Mar 31 2011
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Locked on Apr 28 2011
Added on Mar 30 2011
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