ORA-01555: snapshot too old: rollback segment number [string] with name "[string]" too small

Cause: rollback records needed by a reader for consistent read are overwritten by other writers

Action: If in Automatic Undo Management mode, increase undo_retention setting. Otherwise, use larger rollback segments

Error Type: ORA

• Additional information for ORA-01555: snapshot too old: rollback segment number [string] with name "[string]" too small01555
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