ORA-14453: attempt to use a LOB of a temporary table, whose data has alreadybeen purged
Cause: An attempt was made to use LOB from a temporary table whose data has been dropped either because table was transaction-specific and transaction has commited or aborted, table was truncated or session which created this LOB has ended.
Action: This LOB locator is invalid and cannot be used.
ORA-14453: attempt to use a LOB of a temporary table,whose data has already been purged是Oracle数据库索引处理中一种常见的错误。错误原因主要是当使用临时表或局部表时,系统会自动清理它们的数据,而在该过程中却检测到尝试获取LOB字段的行为,它们很可能已被清理了。
1. 在遇到ORA-14453错误之后,首先要检查报错行,确保它没有操作LOB字段。
2.尝试确定该错误是否发生在早期版本的Oracle数据库上,如果是,则需要更新数据库至最新版本,以获得最新的补丁。
3. 尝试修改其代码,以消除功能或性能上的缺陷,同时也能提高查询效率和避免错误。
4. 定期检查应用的代码,对敏感的LOB字段进行处理。