标题: ORA-01555: snapshot too old: rollback …… [打印本页] 作者: admin 时间: 2016-7-17 15:12 标题: ORA-01555: snapshot too old: rollback …… 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