系统参数
alter system set result_cache_max_size=0 scope=spfile sid='*';
alter system set standby_file_management='AUTO' scope=spfile sid='*';
alter system set archive_lag_target=1800 scope=spfile sid='*';
alter system set control_file_record_keep_time=30 scope=spfile sid='*';
alter system set session_cached_cursors=300 scope=spfile sid='*';
alter system set open_cursors=1500 scope=spfile sid='*';
alter system set undo_retention=10800 scope=spfile sid='*';
alter system set remote_login_passwordfile='EXCLUSIVE' scope=spfile sid='*';
alter system set resource_manager_plan='' scope=spfile sid='*';
alter system set statistics_level='TYPICAL' scope=spfile sid='*';