Oracle-常用用户SQL

SQL语句： 表： select * from cat; select * from tab; select table_name from user_tables; 视图：

SQL语句： 表： select * from cat; select * from tab; select table_name from user_tables; 视图：

性能相关内容 1、捕捉运行很久的SQL column username format a12 column opname format a16 column progress

进程相关： 1、 求当前会话的SID，SERIAL# SELECT Sid, Serial# FROM V$session WHERE Audsid = Sys_Context

1、查看表空间的名称及大小 select t.tablespace_name, round(sum(bytes/(1024*1024)),0) ts_size from dba

1、查看表空间的名称及大小

14、回滚段查看 select rownum, sys.dba_rollback_segs.segment_name Name, v$rollstat.extents Extents

1.监控事例的等待： select event,sum(decode(wait_time,0,0,1)) prev, sum(decode(wait_time,0,1,0)) cur

1.监控事例的等待： select event,sum(decode(wait_time,0,0,1)) prev, sum(decode(wait_time,0,1,0)) curr,co

1、查看表空间的名称及大小 select t.tablespace_name, round(sum(bytes/(1024*1024)),0) ts_size from dba