BlogJava-JustJava-随笔分类-Databasehttp://www.blogjava.net/zJun/category/8261.htmlzJun's Tech Weblogzh-cnSat, 18 Aug 2007 02:53:19 GMTSat, 18 Aug 2007 02:53:19 GMT60查看Oracle中锁表的sql语句http://www.blogjava.net/zJun/archive/2007/07/27/132869.htmlzJun's帛罗阁zJun's帛罗阁Fri, 27 Jul 2007 10:23:00 GMThttp://www.blogjava.net/zJun/archive/2007/07/27/132869.htmlhttp://www.blogjava.net/zJun/comments/132869.htmlhttp://www.blogjava.net/zJun/archive/2007/07/27/132869.html#Feedback0http://www.blogjava.net/zJun/comments/commentRss/132869.htmlhttp://www.blogjava.net/zJun/services/trackbacks/132869.html 摘自： chinaunix
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

执行上记SQL语句,可以查寻到数据库中的锁的情报.

SESSION_ID, USERNAME,  MODE_HELD,  MODE_REQUESTED, OBJECT_NAME, LOCK_TYPE, LOCK_ID

分别是 拥有锁的SESSION_ID,拥有锁的USERNAME,锁的执行模式MODE_HELD,锁的请求MODE_REQUESTED,锁所在的数据库对象名
,锁的类型,锁的ID

zJun's帛罗阁 2007-07-27 18:23 发表评论
]]>[转] 破解MySQL的MD5函数 http://www.blogjava.net/zJun/archive/2007/01/17/94451.htmlzJun's帛罗阁zJun's帛罗阁Wed, 17 Jan 2007 08:22:00 GMThttp://www.blogjava.net/zJun/archive/2007/01/17/94451.htmlhttp://www.blogjava.net/zJun/comments/94451.htmlhttp://www.blogjava.net/zJun/archive/2007/01/17/94451.html#Feedback0http://www.blogjava.net/zJun/comments/commentRss/94451.htmlhttp://www.blogjava.net/zJun/services/trackbacks/94451.html阅读全文

zJun's帛罗阁 2007-01-17 16:22 发表评论
]]>Oracle SQL 3则http://www.blogjava.net/zJun/archive/2006/10/10/74330.htmlzJun's帛罗阁zJun's帛罗阁Tue, 10 Oct 2006 08:49:00 GMThttp://www.blogjava.net/zJun/archive/2006/10/10/74330.htmlhttp://www.blogjava.net/zJun/comments/74330.htmlhttp://www.blogjava.net/zJun/archive/2006/10/10/74330.html#Feedback2http://www.blogjava.net/zJun/comments/commentRss/74330.htmlhttp://www.blogjava.net/zJun/services/trackbacks/74330.html2.分页算法;
3.抽取/删除重复记录;  阅读全文

zJun's帛罗阁 2006-10-10 16:49 发表评论
]]>[深入浅出Hibernate笔记] Hibernate中的继承关系http://www.blogjava.net/zJun/archive/2006/08/16/63739.htmlzJun's帛罗阁zJun's帛罗阁Wed, 16 Aug 2006 07:15:00 GMThttp://www.blogjava.net/zJun/archive/2006/08/16/63739.htmlhttp://www.blogjava.net/zJun/comments/63739.htmlhttp://www.blogjava.net/zJun/archive/2006/08/16/63739.html#Feedback0http://www.blogjava.net/zJun/comments/commentRss/63739.htmlhttp://www.blogjava.net/zJun/services/trackbacks/63739.html1. Table per concrete class 表与子类之间独立一对一关系
2. Table per subclass 每个子类对应一张子表，并与主类共享主表
3. Table per class hierarchy 表与类一对多关系  阅读全文

zJun's帛罗阁 2006-08-16 15:15 发表评论
]]>[深入浅出Hibernate笔记] Oracle中的大字段 Blob/Clobhttp://www.blogjava.net/zJun/archive/2006/08/15/63716.htmlzJun's帛罗阁zJun's帛罗阁Tue, 15 Aug 2006 08:39:00 GMThttp://www.blogjava.net/zJun/archive/2006/08/15/63716.htmlhttp://www.blogjava.net/zJun/comments/63716.htmlhttp://www.blogjava.net/zJun/archive/2006/08/15/63716.html#Feedback0http://www.blogjava.net/zJun/comments/commentRss/63716.htmlhttp://www.blogjava.net/zJun/services/trackbacks/63716.htmlBlob 采用单字节存储，适合保存二进制数据，如图片文件。
Clob 采用多字节存储，适合保存大型文本数据。
  阅读全文

zJun's帛罗阁 2006-08-15 16:39 发表评论
]]>[Oracle] Oracle中的日期格式http://www.blogjava.net/zJun/archive/2006/08/14/61808.htmlzJun's帛罗阁zJun's帛罗阁Mon, 14 Aug 2006 10:24:00 GMThttp://www.blogjava.net/zJun/archive/2006/08/14/61808.htmlhttp://www.blogjava.net/zJun/comments/61808.htmlhttp://www.blogjava.net/zJun/archive/2006/08/14/61808.html#Feedback0http://www.blogjava.net/zJun/comments/commentRss/61808.htmlhttp://www.blogjava.net/zJun/services/trackbacks/61808.html1. ORA-01810: format code appears twice
2. ORA-01722: invalid number   阅读全文

zJun's帛罗阁 2006-08-14 18:24 发表评论
]]>常用JDBC连接字符串http://www.blogjava.net/zJun/archive/2006/07/27/60333.htmlzJun's帛罗阁zJun's帛罗阁Thu, 27 Jul 2006 06:45:00 GMThttp://www.blogjava.net/zJun/archive/2006/07/27/60333.htmlhttp://www.blogjava.net/zJun/comments/60333.htmlhttp://www.blogjava.net/zJun/archive/2006/07/27/60333.html#Feedback0http://www.blogjava.net/zJun/comments/commentRss/60333.htmlhttp://www.blogjava.net/zJun/services/trackbacks/60333.html阅读全文

zJun's帛罗阁 2006-07-27 14:45 发表评论
]]>[Oracle] Sequence简单介绍http://www.blogjava.net/zJun/archive/2006/07/10/57517.htmlzJun's帛罗阁zJun's帛罗阁Mon, 10 Jul 2006 07:43:00 GMThttp://www.blogjava.net/zJun/archive/2006/07/10/57517.htmlhttp://www.blogjava.net/zJun/comments/57517.htmlhttp://www.blogjava.net/zJun/archive/2006/07/10/57517.html#Feedback4http://www.blogjava.net/zJun/comments/commentRss/57517.htmlhttp://www.blogjava.net/zJun/services/trackbacks/57517.html  阅读全文

zJun's帛罗阁 2006-07-10 15:43 发表评论
]]>Informix技巧4则http://www.blogjava.net/zJun/archive/2006/07/06/56969.htmlzJun's帛罗阁zJun's帛罗阁Thu, 06 Jul 2006 08:05:00 GMThttp://www.blogjava.net/zJun/archive/2006/07/06/56969.htmlhttp://www.blogjava.net/zJun/comments/56969.htmlhttp://www.blogjava.net/zJun/archive/2006/07/06/56969.html#Feedback0http://www.blogjava.net/zJun/comments/commentRss/56969.htmlhttp://www.blogjava.net/zJun/services/trackbacks/56969.html2."could not do a physical order read to fetch next row"
3."DBSERVERNAME不在sqlhosts文件中"
4.导入导出  阅读全文

zJun's帛罗阁 2006-07-06 16:05 发表评论
]]>[转] ORACLE常用傻瓜问题1000问http://www.blogjava.net/zJun/archive/2006/07/06/56955.htmlzJun's帛罗阁zJun's帛罗阁Thu, 06 Jul 2006 07:11:00 GMThttp://www.blogjava.net/zJun/archive/2006/07/06/56955.htmlhttp://www.blogjava.net/zJun/comments/56955.htmlhttp://www.blogjava.net/zJun/archive/2006/07/06/56955.html#Feedback0http://www.blogjava.net/zJun/comments/commentRss/56955.htmlhttp://www.blogjava.net/zJun/services/trackbacks/56955.html 　internal/oracle
　　sys/change_on_install
　　system/manager
　　scott/tiger
　　sysman/oem_temp
2. ORACLE9IAS WEB CACHE的初始默认用户和密码？
administrator/administrator
3. oracle 8.0.5怎么创建数据库?
用orainst。如果有motif界面，可以用orainst /m   阅读全文

zJun's帛罗阁 2006-07-06 15:11 发表评论
]]>[转] 常见数据库分页SQL语句http://www.blogjava.net/zJun/archive/2006/03/08/34327.htmlzJun's帛罗阁zJun's帛罗阁Wed, 08 Mar 2006 10:59:00 GMThttp://www.blogjava.net/zJun/archive/2006/03/08/34327.htmlhttp://www.blogjava.net/zJun/comments/34327.htmlhttp://www.blogjava.net/zJun/archive/2006/03/08/34327.html#Feedback0http://www.blogjava.net/zJun/comments/commentRss/34327.htmlhttp://www.blogjava.net/zJun/services/trackbacks/34327.html阅读全文

zJun's帛罗阁 2006-03-08 18:59 发表评论
]]>