文档解释
ORA-16275: prior failed CTAS detected and pre-existing table dropped
Cause: During the processing of a CTAS operation, an existing empty table with the same name and attributes as the CTAS source table was found, and the table was dropped.
Action: No action is necessary. This informational statement is provided to record the event for diagnostic purposes.
ORA-16275是一种ORACLE异常错误，当创建表或索引时，如果表或索引在前次运行中发生失败，那么可能会发生这种错误。
官方解释
常见案例
一般处理方法及步骤
1.检查表/索引不存在，恢复删除的表；
2.验证用于存储联机日志文件（REDO LOGFILES）的存储空间；
3.重新构建或根据存储空间可用性重新调整段；
4.请求释放联机日志文件（REDO LOGFILES）的存储空间；
5.检查实例及使用的Redo日志归档模式；
6.重新启用失败的表/索引的CTAS操作。
