Cause : the nowait keyword forced a return to the command prompt because a resource was unavailable for a lock table or select for update command 原因:对表进行相关操作时，该表被锁定，或表正在被其他程序占用，导致系统忙。
2.
Cause : the nowait keyword forced a return to the command prompt because a resource was unavailable for a lock table or select for update command 原因:对表进行相关操作时，该表被锁定，或表正在被其他程序占用，导致系统忙。
