标题: ORA-00056: DDL lock on object 'string.string' is already held in an incompati... [打印本页] 作者: admin 时间: 2016-7-7 11:01 标题: ORA-00056: DDL lock on object 'string.string' is already held in an incompati... ORA-00056: DDL lock on object 'string.string' is already held in an incompatible mode Cause: An attempt was made to acquire a DDL lock that is already locked. Action: This happens if you attempt to drop a table that has parse locks on it.