Oracle® Database 8i | 9i | 10g | 11g | 12c | 18c | 19c Error Codes

Information for Database Error Code ORA-01555: snapshot too old: rollback segment number [string] with name "[string]" too small
Oracle® Database Error ORA-0155556/6

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

Oracle® Database Error Codes 8i | 9i | 10g | 11g | 12c | 18c | 19c

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