Oracle維護常用SQL語句 |
發(fā)布時間: 2012/9/18 17:25:44 |
1、查看表空間的名稱及大小 select t.tablespace_name, round(sum(bytes/(1024*1024)),0) ts_size from dba_tablespaces t, dba_data_files d where t.tablespace_name = d.tablespace_name-
2、查看表空間物理文件的名稱及大小 select tablespace_name, file_id, file_name, round(bytes/(1024*1024),0) total_space from dba_data_files order by tablespace_name; 3、查看回滾段名稱及大小 select segment_name, tablespace_name, r.status, (initial_extent/1024) InitialExtent,(next_extent/1024) NextExtent, max_extents, v.curext CurExtent From dba_rollback_segs r, v$rollstat v Where r.segment_id = v.usn(+) order by segment_name ; 4、查看控制文件 select name from v$controlfile; 5、查看日志文件 select member from v$logfile; 6、查看表空間的使用情況 select sum(bytes)/(1024*1024) as free_space,tablespace_name from dba_free_space group by tablespace_name; SELECT A.TABLESPACE_NAME,A.BYTES TOTAL,B.BYTES USED, C.BYTES FREE, (B.BYTES*100)/A.BYTES "% USED",(C.BYTES*100)/A.BYTES "% FREE" FROM SYS.SM$TS_AVAIL A,SYS.SM$TS_USED B,SYS.SM$TS_FREE C WHERE A.TABLESPACE_NAME=B.TABLESPACE_NAME AND A.TABLESPACE_NAME=C.TABLESPACE_NAME; 7、查看數(shù)據(jù)庫庫對象 select owner, object_type, status, count(*) count# from all_objects group by owner, object_type, status; 8、查看數(shù)據(jù)庫的版本 Select version FROM Product_component_version Where SUBSTR(PRODUCT,1,6)='Oracle'; 9、查看數(shù)據(jù)庫的創(chuàng)建日期和歸檔方式 Select Created, Log_Mode, Log_Mode From V$Database; 10、捕捉運行很久的SQL column username format a12 column opname format a16 column progress format a8
select username,sid,opname, round(sofar*100 / totalwork,0) '%' as progress, time_remaining,sql_text from v$session_longops , v$sql where time_remaining <> 0 and sql_address = address and sql_hash_value = hash_value / 11、查看數(shù)據(jù)表的參數(shù)信息 SELECT partition_name, high_value, high_value_length, tablespace_name, pct_free, pct_used, ini_trans, max_trans, initial_extent, next_extent, min_extent, max_extent, pct_increase, FREELISTS, freelist_groups, LOGGING, BUFFER_POOL, num_rows, blocks, empty_blocks, avg_space, chain_cnt, avg_row_len, sample_size, last_analyzed FROM dba_tab_partitions --WHERE table_name = :tname AND table_owner = :towner ORDER BY partition_position 12、查看還沒提交的事務 select * from v$locked_object; select * from v$transaction; 13、查找object為哪些進程所用 select p.spid, s.sid, s.serial# serial_num, s.username user_name, a.type object_type, s.oSUSEr os_user_name, a.owner, a.object object_name, decode(sign(48 - command), 1, to_char(command), 'Action Code #' to_char(command) ) action, p.program Oracle_process, s.terminal terminal, s.program program, s.status session_status from v$session s, v$access a, v$process p where s.paddr = p.addr and s.type = 'USER' and a.sid = s.sid and a.object='SUBSCRIBER_ATTR' order by s.username, s.oSUSEr 14、回滾段查看 select rownum, sys.dba_rollback_segs.segment_name Name, v$rollstat.extents Extents, v$rollstat.rssize Size_in_Bytes, v$rollstat.xacts XActs, v$rollstat.gets Gets, v$rollstat.waits Waits, v$rollstat.writes Writes, sys.dba_rollback_segs.status status from v$rollstat, sys.dba_rollback_segs, v$rollname where v$rollname.name(+) = sys.dba_rollback_segs.segment_name and v$rollstat.usn (+) = v$rollname.usn order by rownum 15、耗資源的進程(top session) select s.schemaname schema_name, decode(sign(48 - command), 1, to_char(command), 'Action Code #' to_char(command) ) action, status session_status, s.oSUSEr os_user_name, s.sid, p.spid , s.serial# serial_num, nvl(s.username, '[Oracle process]') user_name, s.terminal terminal, s.program program, st.value criteria_value from v$sesstat st, v$session s , v$processp where st.sid = s.sid and st.statistic# = to_number('38') and ('ALL' = 'ALL' or s.status = 'ALL') and p.addr = s.paddr order by st.value desc, p.spid asc, s.username asc, s.oSUSEr asc
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