摘要： 1 产品DG备库安装 16494615 补丁 主库停止向备库传输日志 alter system set log_archive_dest_state_2=defer; alter system set log_archive_dest_state_4=defer; alter system set 阅读全文

摘要： 主库 alter system switch logfile; alter system set log_archive_dest_state_2='defer'; select switchover_status from v$database; alter database commit to 阅读全文