ORACLE问题,每天10问(三)
发表于:2007-07-02来源:作者:点击数:
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21. 在ORACLE TABLE中如何抓取MEMO类型字段为空的资料记录? select remark from oms_flowrec where trim(@# @# from remark) is not null ; 22. 如何用BBB表的资料去更新AAA表的资料(有关联的字段) UPDATE AAA SET BNS_SNM=(SELECT BNS_SNM FROM BBB WHERE AA
21. 在ORACLE TABLE中如何抓取MEMO类型字段为空的资料记录? select remark from oms_flowrec where trim(@# @# from remark) is not null ; 22. 如何用BBB表的资料去更新AAA表的资料(有关联的字段) UPDATE AAA SET BNS_SNM=(SELECT BNS_SNM FROM BBB WHERE AAA.DPT_NO=BBB.DPT_NO) WHERE BBB.DPT_NO IS NOT NULL; 23. P4计算机安装方法 将SYMCJIT.DLL改为SYSMCJIT.OLD 24. 何查询SERVER是不是OPS? SELECT * FROM V$OPTION; 如果PARALLEL SERVER=TRUE则有OPS能 25. 何查询每个用户的权限? SELECT * FROM DBA_SYS_PRIVS; 26. 如何将表移动表空间? ALTER TABLE TABLE_NAME MOVE TABLESPACE_NAME; 27. 如何将索引移动表空间? ALTER INDEX INDEX_NAME REBUILD TABLESPACE TABLESPACE_NAME; 28. 在
LINUX,
UNIX下如何激活DBA STUDIO? OEMAPP DBASTUDIO 29. 查询锁的状况的对象有? V$LOCK, V$LOCKED_OBJECT, V$SESSION, V$
SQLAREA, V$PROCESS ; 查询锁的表的方法: SELECT S.SID SESSION_ID, S.USERNAME, DECODE(LMODE, 0, @#None@#, 1, @#Null@#, 2, @#Row-S (SS)@#, 3, @#Row-X (SX)@#, 4, @#Share@#, 5, @#S/Row-X (SSX)@#, 6, @#Exclusive@#, TO_CHAR(LMODE)) MODE_HELD, DECODE(REQUEST, 0, @#None@#, 1, @#Null@#, 2, @#Row-S (SS)@#, 3, @#Row-X (SX)@#, 4, @#Share@#, 5, @#S/Row-X (SSX)@#, 6, @#Exclusive@#, TO_CHAR(REQUEST)) MODE_REQUESTED, O.OWNER||@#.@#||O.OBJECT_NAME||@# (@#||O.OBJECT_TYPE||@#)@#, S.TYPE LOCK_TYPE, L.ID1 LOCK_ID1, L.ID2 LOCK_ID2 FROM V$LOCK L, SYS.DBA_OBJECTS O, V$SESSION S WHERE L.SID = S.SID AND L.ID1 = O.OBJECT_ID ; 30. 如何解锁? ALTER SYSTEM KILL SESSION ‘SID,SERIR#’;
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