在行: 1 上开始执行命令时出错 -
alter table dept modify deptno NUMBER(4,0)
错误报告 -
SQL 错误: ORA-00054: 资源正忙, 但指定以 NOWAIT 方式获取资源, 或者超时失效
00054. 00000 - "resource busy and acquire with NOWAIT specified"
*Cause: Resource interested is busy.
*Action: Retry if necessary.