ORACLE问题,每天10问(三)

类别:数据库 点击:0 评论:0 推荐:
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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