expbo的专栏

 1.停止Standby select process, status from v$managed_standby; --查看备库是否在应用日志进行恢复 alter database recover managed standby database cancel; shutdown immediate;   2.切换到只读模式 -----由shutdown模式切换到只读模式--

1、建函数 create or replace function count_rows(table_name in varchar2,                               owner in varchar2 default null) return number authid current_user IS    num_rows number;    s