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常用数据库管理sql语句: Session(非IDLE Wait Event)
select event,sid from v$session_wait where event not like 'SQL%' and event not like '%message%'; SGA空余内存
select * from v$SGASTAT where name='free memory'; LOCK信息
select event,sid from v$session_wait where event like '%enqueue%' or event like 'library cache lock%'; TEMP信息
column s.machine format a10 SQL> column s.sid format 9999999 SQL> column s.module format a30 SQL> column u.tablespace format a10 SQL> column u.contents format a20 SQL> column u.segtype format a10 SQL> column MB format 999999
SQL> column u.tablespace format a10 select
s.machine,s.sid,s.module,u.tablespace,u.contents,u.segtype,round(u.blocks*8192/1024/1024,2)MB sys.v_$session
s,sys.v_$sort_usage
u
from where
s.saddr=u.session_addr and u.contents='TEMPORARY' and round(u.blocks*8192/1024/1024,2)>50; 表碎片信息(行迁移)
select owner ||'.'||table_name,CHAIN_CNT from dba_tables where CHAIN_CNT>0; 检查表记录数变化情况 select
table_name,owner,num_rows,sysdate
from
dba_tables ,dual where owner='LBC1' and num_rows>1000000;
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