ORA-12988: cannot drop column from table owned by SYS
Cause: An attempt was made to drop a column from a system table.
Action: This action is not allowed
ORA-12988: cannot drop column from table owned by SYS是一个通用的错误代码,它指出试图从一个属于SYS的表中删除列时出错。
1.为了避免上述错误,用户必须遵守ORACLE的安全规则,只能操作自己拥有的表。
2.如果确实需要对SYS拥有的表进行维护操作,则应该使用对这些表进行管理的utility,如dbms_describe。
3.此外,应定期检查所有表的可用性,以确保正确运行ORACLE数据库。