??xml version="1.0" encoding="utf-8" standalone="yes"?>欧美精品一二三,亚洲第一图区,亚洲精品蜜桃乱晃http://www.aygfsteel.com/chenying19890808/category/47734.html<span style="color: red"><span style="font-family: q圆"><span style="color: red; font-family: ">自己选择的\Q摸爬滚打也要走下去</span> </span></span> zh-cnTue, 17 Jun 2014 05:45:02 GMTTue, 17 Jun 2014 05:45:02 GMT60常见Oracle HINT的用?/title><link>http://www.aygfsteel.com/chenying19890808/archive/2014/06/16/oracle_hint.html</link><dc:creator>wokaoJune</dc:creator><author>wokaoJune</author><pubDate>Mon, 16 Jun 2014 09:31:00 GMT</pubDate><guid>http://www.aygfsteel.com/chenying19890808/archive/2014/06/16/oracle_hint.html</guid><wfw:comment>http://www.aygfsteel.com/chenying19890808/comments/414813.html</wfw:comment><comments>http://www.aygfsteel.com/chenying19890808/archive/2014/06/16/oracle_hint.html#Feedback</comments><slash:comments>0</slash:comments><wfw:commentRss>http://www.aygfsteel.com/chenying19890808/comments/commentRss/414813.html</wfw:commentRss><trackback:ping>http://www.aygfsteel.com/chenying19890808/services/trackbacks/414813.html</trackback:ping><description><![CDATA[<span style="font-family: Arial; line-height: 26px;">在SQL语句优化q程中,我们l常会用到hint,现ȝ一下在SQL优化q程中常见Oracle HINT的用法:</span><br style="font-family: Arial; line-height: 26px;" /><span style="font-family: Arial; line-height: 26px;">1. /*+ALL_ROWS*/</span><br style="font-family: Arial; line-height: 26px;" /><span style="font-family: Arial; line-height: 26px;">表明对语句块选择Z开销的优化方?q获得最佛_吐量,使资源消耗最化.</span><br style="font-family: Arial; line-height: 26px;" /><span style="font-family: Arial; line-height: 26px;">例如:</span><br style="font-family: Arial; line-height: 26px;" /><span style="font-family: Arial; line-height: 26px;">SELECT /*+ALL+_ROWS*/ EMP_NO,EMP_NAM,DAT_IN FROM BSEMPMS WHERE EMP_NO='SCOTT';</span><br style="font-family: Arial; line-height: 26px;" /><span style="font-family: Arial; line-height: 26px;">2. /*+FIRST_ROWS*/</span><br style="font-family: Arial; line-height: 26px;" /><span style="font-family: Arial; line-height: 26px;">表明对语句块选择Z开销的优化方?q获得最佛_应时?使资源消耗最化.</span><br style="font-family: Arial; line-height: 26px;" /><span style="font-family: Arial; line-height: 26px;">例如:</span><br style="font-family: Arial; line-height: 26px;" /><span style="font-family: Arial; line-height: 26px;">SELECT /*+FIRST_ROWS*/ EMP_NO,EMP_NAM,DAT_IN FROM BSEMPMS WHERE EMP_NO='SCOTT';</span><br style="font-family: Arial; line-height: 26px;" /><span style="font-family: Arial; line-height: 26px;">3. /*+CHOOSE*/</span><br style="font-family: Arial; line-height: 26px;" /><span style="font-family: Arial; line-height: 26px;">表明如果数据字典中有讉K表的l计信息,基于开销的优化方?q获得最佳的吞吐?</span><br style="font-family: Arial; line-height: 26px;" /><span style="font-family: Arial; line-height: 26px;">表明如果数据字典中没有访问表的统计信?基于规则开销的优化方?</span><br style="font-family: Arial; line-height: 26px;" /><span style="font-family: Arial; line-height: 26px;">例如:</span><br style="font-family: Arial; line-height: 26px;" /><span style="font-family: Arial; line-height: 26px;">SELECT /*+CHOOSE*/ EMP_NO,EMP_NAM,DAT_IN FROM BSEMPMS WHERE EMP_NO='SCOTT';</span><br style="font-family: Arial; line-height: 26px;" /><span style="font-family: Arial; line-height: 26px;">4. /*+RULE*/</span><br style="font-family: Arial; line-height: 26px;" /><span style="font-family: Arial; line-height: 26px;">表明对语句块选择Z规则的优化方?</span><br style="font-family: Arial; line-height: 26px;" /><span style="font-family: Arial; line-height: 26px;">例如:</span><br style="font-family: Arial; line-height: 26px;" /><span style="font-family: Arial; line-height: 26px;">SELECT /*+ RULE */ EMP_NO,EMP_NAM,DAT_IN FROM BSEMPMS WHERE EMP_NO='SCOTT';</span><br style="font-family: Arial; line-height: 26px;" /><span style="font-family: Arial; line-height: 26px;">5. /*+FULL(TABLE)*/</span><br style="font-family: Arial; line-height: 26px;" /><span style="font-family: Arial; line-height: 26px;">表明对表选择全局扫描的方?</span><br style="font-family: Arial; line-height: 26px;" /><span style="font-family: Arial; line-height: 26px;">例如:</span><br style="font-family: Arial; line-height: 26px;" /><span style="font-family: Arial; line-height: 26px;">SELECT /*+FULL(A)*/ EMP_NO,EMP_NAM FROM BSEMPMS A WHERE EMP_NO='SCOTT';</span><br style="font-family: Arial; line-height: 26px;" /><span style="font-family: Arial; line-height: 26px;">6. /*+ROWID(TABLE)*/</span><br style="font-family: Arial; line-height: 26px;" /><span style="font-family: Arial; line-height: 26px;">提示明确表明Ҏ定表ҎROWIDq行讉K.</span><br style="font-family: Arial; line-height: 26px;" /><span style="font-family: Arial; line-height: 26px;">例如:</span><br style="font-family: Arial; line-height: 26px;" /><span style="font-family: Arial; line-height: 26px;">SELECT /*+ROWID(BSEMPMS)*/ * FROM BSEMPMS WHERE ROWID>='AAAAAAAAAAAAAA'</span><br style="font-family: Arial; line-height: 26px;" /><span style="font-family: Arial; line-height: 26px;">AND EMP_NO='SCOTT';</span><br style="font-family: Arial; line-height: 26px;" /><span style="font-family: Arial; line-height: 26px;">7. /*+CLUSTER(TABLE)*/</span><br style="font-family: Arial; line-height: 26px;" /><span style="font-family: Arial; line-height: 26px;">提示明确表明Ҏ定表选择扫描的讉KҎ,它只对簇对象有效.</span><br style="font-family: Arial; line-height: 26px;" /><span style="font-family: Arial; line-height: 26px;">例如:</span><br style="font-family: Arial; line-height: 26px;" /><span style="font-family: Arial; line-height: 26px;">SELECT /*+CLUSTER */ BSEMPMS.EMP_NO,DPT_NO FROM BSEMPMS,BSDPTMS</span><br style="font-family: Arial; line-height: 26px;" /><span style="font-family: Arial; line-height: 26px;">WHERE DPT_NO='TEC304' AND BSEMPMS.DPT_NO=BSDPTMS.DPT_NO;</span><br style="font-family: Arial; line-height: 26px;" /><span style="font-family: Arial; line-height: 26px;">8. /*+INDEX(TABLE INDEX_NAME)*/</span><br style="font-family: Arial; line-height: 26px;" /><span style="font-family: Arial; line-height: 26px;">表明对表选择索引的扫描方?</span><br style="font-family: Arial; line-height: 26px;" /><span style="font-family: Arial; line-height: 26px;">例如:</span><br style="font-family: Arial; line-height: 26px;" /><span style="font-family: Arial; line-height: 26px;">SELECT /*+INDEX(BSEMPMS SEX_INDEX) USE SEX_INDEX BECAUSE THERE ARE FEWMALE BSEMPMS */ FROM BSEMPMS WHERE SEX='M';</span><br style="font-family: Arial; line-height: 26px;" /><span style="font-family: Arial; line-height: 26px;">9. /*+INDEX_ASC(TABLE INDEX_NAME)*/</span><br style="font-family: Arial; line-height: 26px;" /><span style="font-family: Arial; line-height: 26px;">表明对表选择索引升序的扫描方?</span><br style="font-family: Arial; line-height: 26px;" /><span style="font-family: Arial; line-height: 26px;">例如:</span><br style="font-family: Arial; line-height: 26px;" /><span style="font-family: Arial; line-height: 26px;">SELECT /*+INDEX_ASC(BSEMPMS PK_BSEMPMS) */ FROM BSEMPMS WHERE DPT_NO='SCOTT';</span><br style="font-family: Arial; line-height: 26px;" /><span style="font-family: Arial; line-height: 26px;">10. /*+INDEX_COMBINE*/</span><br style="font-family: Arial; line-height: 26px;" /><span style="font-family: Arial; line-height: 26px;">为指定表选择位图讉K路经,如果INDEX_COMBINE中没有提供作为参数的索引,选择Z囄引的布尔l合方式.</span><br style="font-family: Arial; line-height: 26px;" /><span style="font-family: Arial; line-height: 26px;">例如:</span><br style="font-family: Arial; line-height: 26px;" /><span style="font-family: Arial; line-height: 26px;">SELECT /*+INDEX_COMBINE(BSEMPMS SAL_BMI HIREDATE_BMI)*/ * FROM BSEMPMS</span><br style="font-family: Arial; line-height: 26px;" /><span style="font-family: Arial; line-height: 26px;">WHERE SAL<5000000 AND HIREDATE<SYSDATE;</span><br style="font-family: Arial; line-height: 26px;" /><span style="font-family: Arial; line-height: 26px;">11. /*+INDEX_JOIN(TABLE INDEX_NAME)*/</span><br style="font-family: Arial; line-height: 26px;" /><span style="font-family: Arial; line-height: 26px;">提示明确命o优化器用烦引作问\?</span><br style="font-family: Arial; line-height: 26px;" /><span style="font-family: Arial; line-height: 26px;">例如:</span><br style="font-family: Arial; line-height: 26px;" /><span style="font-family: Arial; line-height: 26px;">SELECT /*+INDEX_JOIN(BSEMPMS SAL_HMI HIREDATE_BMI)*/ SAL,HIREDATE</span><br style="font-family: Arial; line-height: 26px;" /><span style="font-family: Arial; line-height: 26px;">FROM BSEMPMS WHERE SAL<60000;</span><br style="font-family: Arial; line-height: 26px;" /><span style="font-family: Arial; line-height: 26px;">12. /*+INDEX_DESC(TABLE INDEX_NAME)*/</span><br style="font-family: Arial; line-height: 26px;" /><span style="font-family: Arial; line-height: 26px;">表明对表选择索引降序的扫描方?</span><br style="font-family: Arial; line-height: 26px;" /><span style="font-family: Arial; line-height: 26px;">例如:</span><br style="font-family: Arial; line-height: 26px;" /><span style="font-family: Arial; line-height: 26px;">SELECT /*+INDEX_DESC(BSEMPMS PK_BSEMPMS) */ FROM BSEMPMS WHERE DPT_NO='SCOTT';</span><br style="font-family: Arial; line-height: 26px;" /><span style="font-family: Arial; line-height: 26px;">13. /*+INDEX_FFS(TABLE INDEX_NAME)*/</span><br style="font-family: Arial; line-height: 26px;" /><span style="font-family: Arial; line-height: 26px;">Ҏ定的表执行快速全索引扫描,而不是全表扫描的办法.</span><br style="font-family: Arial; line-height: 26px;" /><span style="font-family: Arial; line-height: 26px;">例如:</span><br style="font-family: Arial; line-height: 26px;" /><span style="font-family: Arial; line-height: 26px;">SELECT /*+INDEX_FFS(BSEMPMS IN_EMPNAM)*/ * FROM BSEMPMS WHERE DPT_NO='TEC305';</span><br style="font-family: Arial; line-height: 26px;" /><span style="font-family: Arial; line-height: 26px;">14. /*+ADD_EQUAL TABLE INDEX_NAM1,INDEX_NAM2,...*/</span><br style="font-family: Arial; line-height: 26px;" /><span style="font-family: Arial; line-height: 26px;">提示明确q行执行规划的选择,几个单列烦引的扫描合v?</span><br style="font-family: Arial; line-height: 26px;" /><span style="font-family: Arial; line-height: 26px;">例如:</span><br style="font-family: Arial; line-height: 26px;" /><span style="font-family: Arial; line-height: 26px;">SELECT /*+INDEX_FFS(BSEMPMS IN_DPTNO,IN_EMPNO,IN_SEX)*/ * FROM BSEMPMS WHERE EMP_NO='SCOTT' AND DPT_NO='TDC306';</span><br style="font-family: Arial; line-height: 26px;" /><span style="font-family: Arial; line-height: 26px;">15. /*+USE_CONCAT*/</span><br style="font-family: Arial; line-height: 26px;" /><span style="font-family: Arial; line-height: 26px;">Ҏ询中的WHERE后面的OR条gq行转换为UNION ALL的组合查?</span><br style="font-family: Arial; line-height: 26px;" /><span style="font-family: Arial; line-height: 26px;">例如:</span><br style="font-family: Arial; line-height: 26px;" /><span style="font-family: Arial; line-height: 26px;">SELECT /*+USE_CONCAT*/ * FROM BSEMPMS WHERE DPT_NO='TDC506' AND SEX='M';</span><br style="font-family: Arial; line-height: 26px;" /><span style="font-family: Arial; line-height: 26px;">16. /*+NO_EXPAND*/</span><br style="font-family: Arial; line-height: 26px;" /><span style="font-family: Arial; line-height: 26px;">对于WHERE后面的OR 或者IN-LIST的查询语?NO_EXPAND阻止其Z优化器对其进行扩?</span><br style="font-family: Arial; line-height: 26px;" /><span style="font-family: Arial; line-height: 26px;">例如:</span><br style="font-family: Arial; line-height: 26px;" /><span style="font-family: Arial; line-height: 26px;">SELECT /*+NO_EXPAND*/ * FROM BSEMPMS WHERE DPT_NO='TDC506' AND SEX='M';</span><br style="font-family: Arial; line-height: 26px;" /><span style="font-family: Arial; line-height: 26px;">17. /*+NOWRITE*/</span><br style="font-family: Arial; line-height: 26px;" /><span style="font-family: Arial; line-height: 26px;">止Ҏ询块的查询重写操?</span><br style="font-family: Arial; line-height: 26px;" /><span style="font-family: Arial; line-height: 26px;">18. /*+REWRITE*/</span><br style="font-family: Arial; line-height: 26px;" /><span style="font-family: Arial; line-height: 26px;">可以视图作为参?</span><br style="font-family: Arial; line-height: 26px;" /><span style="font-family: Arial; line-height: 26px;">19. /*+MERGE(TABLE)*/</span><br style="font-family: Arial; line-height: 26px;" /><span style="font-family: Arial; line-height: 26px;">能够对视囄各个查询q行相应的合q?</span><br style="font-family: Arial; line-height: 26px;" /><span style="font-family: Arial; line-height: 26px;">例如:</span><br style="font-family: Arial; line-height: 26px;" /><span style="font-family: Arial; line-height: 26px;">SELECT /*+MERGE(V) */ A.EMP_NO,A.EMP_NAM,B.DPT_NO FROM BSEMPMS A (SELET DPT_NO</span><br style="font-family: Arial; line-height: 26px;" /><span style="font-family: Arial; line-height: 26px;">,AVG(SAL) AS AVG_SAL FROM BSEMPMS B GROUP BY DPT_NO) V WHERE A.DPT_NO=V.DPT_NO</span><br style="font-family: Arial; line-height: 26px;" /><span style="font-family: Arial; line-height: 26px;">AND A.SAL>V.AVG_SAL;</span><br style="font-family: Arial; line-height: 26px;" /><span style="font-family: Arial; line-height: 26px;">20. /*+NO_MERGE(TABLE)*/</span><br style="font-family: Arial; line-height: 26px;" /><span style="font-family: Arial; line-height: 26px;">对于有可合ƈ的视图不再合q?</span><br style="font-family: Arial; line-height: 26px;" /><span style="font-family: Arial; line-height: 26px;">例如:</span><br style="font-family: Arial; line-height: 26px;" /><span style="font-family: Arial; line-height: 26px;">SELECT /*+NO_MERGE(V) */ A.EMP_NO,A.EMP_NAM,B.DPT_NO FROM BSEMPMS A (SELECT DPT_NO,AVG(SAL) AS AVG_SAL FROM BSEMPMS B GROUP BY DPT_NO) V WHERE A.DPT_NO=V.DPT_NO AND A.SAL>V.AVG_SAL;</span><br style="font-family: Arial; line-height: 26px;" /><span style="font-family: Arial; line-height: 26px;">21. /*+ORDERED*/</span><br style="font-family: Arial; line-height: 26px;" /><span style="font-family: Arial; line-height: 26px;">Ҏ表出现在FROM中的序,ORDERED使ORACLE依此序对其q接.</span><br style="font-family: Arial; line-height: 26px;" /><span style="font-family: Arial; line-height: 26px;">例如:</span><br style="font-family: Arial; line-height: 26px;" /><span style="font-family: Arial; line-height: 26px;">SELECT /*+ORDERED*/ A.COL1,B.COL2,C.COL3 FROM TABLE1 A,TABLE2 B,TABLE3 C WHERE A.COL1=B.COL1 AND B.COL1=C.COL1;</span><br style="font-family: Arial; line-height: 26px;" /><span style="font-family: Arial; line-height: 26px;">22. /*+USE_NL(TABLE)*/</span><br style="font-family: Arial; line-height: 26px;" /><span style="font-family: Arial; line-height: 26px;">指定表与嵌套的q接的行源进行连?q把指定表作为内部表.</span><br style="font-family: Arial; line-height: 26px;" /><span style="font-family: Arial; line-height: 26px;">例如:</span><br style="font-family: Arial; line-height: 26px;" /><span style="font-family: Arial; line-height: 26px;">SELECT /*+ORDERED USE_NL(BSEMPMS)*/ BSDPTMS.DPT_NO,BSEMPMS.EMP_NO,BSEMPMS.EMP_NAM FROM BSEMPMS,BSDPTMS WHERE BSEMPMS.DPT_NO=BSDPTMS.DPT_NO;</span><br style="font-family: Arial; line-height: 26px;" /><span style="font-family: Arial; line-height: 26px;">23. /*+USE_MERGE(TABLE)*/</span><br style="font-family: Arial; line-height: 26px;" /><span style="font-family: Arial; line-height: 26px;">指定的表与其他行源通过合ƈ排序q接方式q接h.</span><br style="font-family: Arial; line-height: 26px;" /><span style="font-family: Arial; line-height: 26px;">例如:</span><br style="font-family: Arial; line-height: 26px;" /><span style="font-family: Arial; line-height: 26px;">SELECT /*+USE_MERGE(BSEMPMS,BSDPTMS)*/ * FROM BSEMPMS,BSDPTMS WHERE BSEMPMS.DPT_NO=BSDPTMS.DPT_NO;</span><br style="font-family: Arial; line-height: 26px;" /><span style="font-family: Arial; line-height: 26px;">24. /*+USE_HASH(TABLE)*/</span><br style="font-family: Arial; line-height: 26px;" /><span style="font-family: Arial; line-height: 26px;">指定的表与其他行源通过哈希q接方式q接h.</span><br style="font-family: Arial; line-height: 26px;" /><span style="font-family: Arial; line-height: 26px;">例如:</span><br style="font-family: Arial; line-height: 26px;" /><span style="font-family: Arial; line-height: 26px;">SELECT /*+USE_HASH(BSEMPMS,BSDPTMS)*/ * FROM BSEMPMS,BSDPTMS WHERE BSEMPMS.DPT_NO=BSDPTMS.DPT_NO;</span><br style="font-family: Arial; line-height: 26px;" /><span style="font-family: Arial; line-height: 26px;">25. /*+DRIVING_SITE(TABLE)*/</span><br style="font-family: Arial; line-height: 26px;" /><span style="font-family: Arial; line-height: 26px;">强制与ORACLE所选择的位|不同的表进行查询执?</span><br style="font-family: Arial; line-height: 26px;" /><span style="font-family: Arial; line-height: 26px;">例如:</span><br style="font-family: Arial; line-height: 26px;" /><span style="font-family: Arial; line-height: 26px;">SELECT /*+DRIVING_SITE(DEPT)*/ * FROM BSEMPMS,DEPT@BSDPTMS WHERE BSEMPMS.DPT_NO=DEPT.DPT_NO;</span><br style="font-family: Arial; line-height: 26px;" /><span style="font-family: Arial; line-height: 26px;">26. /*+LEADING(TABLE)*/</span><br style="font-family: Arial; line-height: 26px;" /><span style="font-family: Arial; line-height: 26px;">指定的表作接次序中的首?</span><br style="font-family: Arial; line-height: 26px;" /><span style="font-family: Arial; line-height: 26px;">27. /*+CACHE(TABLE)*/</span><br style="font-family: Arial; line-height: 26px;" /><span style="font-family: Arial; line-height: 26px;">当进行全表扫描时,CACHE提示能够表的检索块攄在缓冲区~存中最q最列表LRU的最q用端</span><br style="font-family: Arial; line-height: 26px;" /><span style="font-family: Arial; line-height: 26px;">例如:</span><br style="font-family: Arial; line-height: 26px;" /><span style="font-family: Arial; line-height: 26px;">SELECT /*+FULL(BSEMPMS) CAHE(BSEMPMS) */ EMP_NAM FROM BSEMPMS;</span><br style="font-family: Arial; line-height: 26px;" /><span style="font-family: Arial; line-height: 26px;">28. /*+NOCACHE(TABLE)*/</span><br style="font-family: Arial; line-height: 26px;" /><span style="font-family: Arial; line-height: 26px;">当进行全表扫描时,CACHE提示能够表的检索块攄在缓冲区~存中最q最列表LRU的最q用端</span><br style="font-family: Arial; line-height: 26px;" /><span style="font-family: Arial; line-height: 26px;">例如:</span><br style="font-family: Arial; line-height: 26px;" /><span style="font-family: Arial; line-height: 26px;">SELECT /*+FULL(BSEMPMS) NOCAHE(BSEMPMS) */ EMP_NAM FROM BSEMPMS;</span><br style="font-family: Arial; line-height: 26px;" /><span style="font-family: Arial; line-height: 26px;">29. /*+APPEND*/</span><br style="font-family: Arial; line-height: 26px;" /><span style="font-family: Arial; line-height: 26px;">直接插入到表的最?可以提高速度.</span><br style="font-family: Arial; line-height: 26px;" /><span style="font-family: Arial; line-height: 26px;">insert /*+append*/ into test1 select * from test4 ;</span><br style="font-family: Arial; line-height: 26px;" /><span style="font-family: Arial; line-height: 26px;">30. /*+NOAPPEND*/</span><br style="font-family: Arial; line-height: 26px;" /><span style="font-family: Arial; line-height: 26px;">通过在插入语句生存期内停止ƈ行模式来启动常规插入.</span><br style="font-family: Arial; line-height: 26px;" /><span style="font-family: Arial; line-height: 26px;">insert /*+noappend*/ into test1 select * from test4 ;<br /><br /><br /><br /><br /><br /></span><a style="color: #666666; text-decoration: none; font-family: 'Microsoft YaHei'; font-size: 20px; line-height: 30px; background-color: #ffffff;">参?/a>blog:http://blog.csdn.net/tianlesoftware/article/details/4969702<img src ="http://www.aygfsteel.com/chenying19890808/aggbug/414813.html" width = "1" height = "1" /><br><br><div align=right><a style="text-decoration:none;" href="http://www.aygfsteel.com/chenying19890808/" target="_blank">wokaoJune</a> 2014-06-16 17:31 <a href="http://www.aygfsteel.com/chenying19890808/archive/2014/06/16/oracle_hint.html#Feedback" target="_blank" style="text-decoration:none;">发表评论</a></div>]]></description></item><item><title>【Oracle】极限挑战—C#+ODP 100万条数据导入Oracle数据库仅用不?U?/title><link>http://www.aygfsteel.com/chenying19890808/archive/2011/08/26/357354.html</link><dc:creator>wokaoJune</dc:creator><author>wokaoJune</author><pubDate>Fri, 26 Aug 2011 06:48:00 GMT</pubDate><guid>http://www.aygfsteel.com/chenying19890808/archive/2011/08/26/357354.html</guid><wfw:comment>http://www.aygfsteel.com/chenying19890808/comments/357354.html</wfw:comment><comments>http://www.aygfsteel.com/chenying19890808/archive/2011/08/26/357354.html#Feedback</comments><slash:comments>0</slash:comments><wfw:commentRss>http://www.aygfsteel.com/chenying19890808/comments/commentRss/357354.html</wfw:commentRss><trackback:ping>http://www.aygfsteel.com/chenying19890808/services/trackbacks/357354.html</trackback:ping><description><![CDATA[     摘要: 作? Aicken(李鸣)  来源: 博客?nbsp; 发布旉: 2010-09-09 21:32  阅读: 1021 ?nbsp; 原文链接   全屏阅读  [收藏]  摘要Q在q里我们看到的是C#中利用ODP实现在Oracle数据库中瞬间导入百万...  <a href='http://www.aygfsteel.com/chenying19890808/archive/2011/08/26/357354.html'>阅读全文</a><img src ="http://www.aygfsteel.com/chenying19890808/aggbug/357354.html" width = "1" height = "1" /><br><br><div align=right><a style="text-decoration:none;" href="http://www.aygfsteel.com/chenying19890808/" target="_blank">wokaoJune</a> 2011-08-26 14:48 <a href="http://www.aygfsteel.com/chenying19890808/archive/2011/08/26/357354.html#Feedback" target="_blank" style="text-decoration:none;">发表评论</a></div>]]></description></item><item><title>【Oracle】SQL优化34?/title><link>http://www.aygfsteel.com/chenying19890808/archive/2011/08/26/357335.html</link><dc:creator>wokaoJune</dc:creator><author>wokaoJune</author><pubDate>Fri, 26 Aug 2011 03:28:00 GMT</pubDate><guid>http://www.aygfsteel.com/chenying19890808/archive/2011/08/26/357335.html</guid><wfw:comment>http://www.aygfsteel.com/chenying19890808/comments/357335.html</wfw:comment><comments>http://www.aygfsteel.com/chenying19890808/archive/2011/08/26/357335.html#Feedback</comments><slash:comments>0</slash:comments><wfw:commentRss>http://www.aygfsteel.com/chenying19890808/comments/commentRss/357335.html</wfw:commentRss><trackback:ping>http://www.aygfsteel.com/chenying19890808/services/trackbacks/357335.html</trackback:ping><description><![CDATA[     摘要: 我们要做C但会写SQL,q要做到写出性能优良的SQL,以下为笔者学习、摘录、ƈ汇总部分资料与大家分nQ?nbsp;Q?Q选择最有效率的表名序(只在Z规则的优化器中有?Q?nbsp;ORACLE 的解析器按照从右到左的顺序处理FROM子句中的表名QFROM子句中写在最后的?基础?driving table)被最先处理,在FROM子句中包含多个表的情况下,你必选择记录条数最的表作为基...  <a href='http://www.aygfsteel.com/chenying19890808/archive/2011/08/26/357335.html'>阅读全文</a><img src ="http://www.aygfsteel.com/chenying19890808/aggbug/357335.html" width = "1" height = "1" /><br><br><div align=right><a style="text-decoration:none;" href="http://www.aygfsteel.com/chenying19890808/" target="_blank">wokaoJune</a> 2011-08-26 11:28 <a href="http://www.aygfsteel.com/chenying19890808/archive/2011/08/26/357335.html#Feedback" target="_blank" style="text-decoration:none;">发表评论</a></div>]]></description></item><item><title>【Oracle】Oracle Pl/sql 配置备忘?/title><link>http://www.aygfsteel.com/chenying19890808/archive/2011/06/29/353355.html</link><dc:creator>wokaoJune</dc:creator><author>wokaoJune</author><pubDate>Wed, 29 Jun 2011 06:28:00 GMT</pubDate><guid>http://www.aygfsteel.com/chenying19890808/archive/2011/06/29/353355.html</guid><wfw:comment>http://www.aygfsteel.com/chenying19890808/comments/353355.html</wfw:comment><comments>http://www.aygfsteel.com/chenying19890808/archive/2011/06/29/353355.html#Feedback</comments><slash:comments>0</slash:comments><wfw:commentRss>http://www.aygfsteel.com/chenying19890808/comments/commentRss/353355.html</wfw:commentRss><trackback:ping>http://www.aygfsteel.com/chenying19890808/services/trackbacks/353355.html</trackback:ping><description><![CDATA[<div><span style="border-collapse: separate; color: #000000; font-family: Simsun; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: 2; text-align: -webkit-auto; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-border-horizontal-spacing: 0px; -webkit-border-vertical-spacing: 0px; -webkit-text-decorations-in-effect: none; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px; font-size: medium; "><span style="font-family: Arial, sans-serif, Helvetica, Tahoma; font-size: 14px; line-height: 25px; text-align: left; "><p style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; padding-top: 0px; padding-right: 0px; padding-bottom: 0px; padding-left: 0px; "><span style="font-size: large; "><strong style="font-weight: bold; ">PL/SQL配置Q?/strong></span></p><p style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; padding-top: 0px; padding-right: 0px; padding-bottom: 0px; padding-left: 0px; ">注意:<span style="color: #ff0000; "><span style="font-size: medium; ">请下载最新的oracle instant客户?.有些pl/sql Developer不支持老版本的..</span></span></p><p style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; padding-top: 0px; padding-right: 0px; padding-bottom: 0px; padding-left: 0px; ">q有U情冉|原来装过oracle客户?.再用pl/sql?.配置的客L地址可能不v效果..需要确定pl/sql指定的oracle目录到底是那?/p><p style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; padding-top: 0px; padding-right: 0px; padding-bottom: 0px; padding-left: 0px; ">可以通过q接不存在的 数据库sid...弹出错误中可以显C? 找不到d:\oracleclient\tnsname.ora</p><p style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; padding-top: 0px; padding-right: 0px; padding-bottom: 0px; padding-left: 0px; ">如果提示找不到相关sid?..表示讄成功..只是d的tnsname.ora文g是旧的客L文g...<br /><br />配置PL/SQL的oracle的目录位|,或者client的位|: <br /><br />                    tool-->preferences-->connection-->oracle home <br /><br /><img src="http://dl.iteye.com/upload/picture/pic/49697/e4fabd16-dc82-3d19-94f3-5f9a210dd793.jpg" alt="" style="border-top-width: 0px; border-right-width: 0px; border-bottom-width: 0px; border-left-width: 0px; border-style: initial; border-color: initial; " height="616" width="699" /></p><p style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; padding-top: 0px; padding-right: 0px; padding-bottom: 0px; padding-left: 0px; "><img src="http://dl.iteye.com/upload/picture/pic/49761/7ec2bbce-a2da-3ef0-aac4-a9963ae90943.jpg" alt="" style="border-top-width: 0px; border-right-width: 0px; border-bottom-width: 0px; border-left-width: 0px; border-style: initial; border-color: initial; " height="85" width="282" /></p><p style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; padding-top: 0px; padding-right: 0px; padding-bottom: 0px; padding-left: 0px; ">搜烦出tnsnames.ora文gQ此文g是oracle数据库的文g不是PL/SQL的) q添加下面代?nbsp;<br />XLSGRID = (DESCRIPTION = <br />(ADDRESS_LIST = <br />(ADDRESS = (PROTOCOL = TCP)(HOST = www.xls.net)(PORT = 1521))  <br />) <br />(CONNECT_DATA = <br />(SERVICE_NAME = ORCL) <br />) <br />  )//服务器上?nbsp;<br />XE = <br />(DESCRIPTION = <br />  (ADDRESS = (PROTOCOL = TCP)(HOST = foolraty-7e652c)(PORT = 1521)) <br />(CONNECT_DATA = <br />(SERVER = DEDICATED) <br />(SERVICE_NAME = XE) <br />) <br />  )//本地?nbsp;<br />dPL/SQL后,数据库中的数据在PL/SQLQ左边object里的tablespace -&gt;user?nbsp;<br /><br />了解Oracle Database Instant Client的作用,需要通过它进行oracle数据库连接开发,也可以用PL/SQL通过它的tnsnames.ora配置q程q接oracle <br /><br /><br /><br /><br /><br /><span style="font-size: large; "><strong style="font-weight: bold; ">免安装Oracle客户端用PL/SQLq接Oracle</strong> </span> <br />大家都知道,用PL/SQLq接OracleQ是需要安装Oracle客户端Y件的。有没要惌不安装Oracle客户端直接连接Oracle呢? <br /><br />其实我一直想q样做,因ؓq个客户端实在太让h讨厌了!Q!不但会安装一个JDKQ而且q会把自己放在环境变量的最前面Q会造成不小的麻烦?nbsp;<br /><br />其实我之前问q很多h的,但是他们都说一定需要安装Oracle客户端的.......直到昨天无意中发C以下q个ҎQ?nbsp;<br /><br />只需要在Oracle下蝲一个叫Instant Client Package的Y件就可以了,q个软g不需要安装,只要解压可以用了,很方便,q重装了系l还是可以用的?nbsp;<br /><br />下蝲地址Qhttp://www.oracle.com/technology/software/tech/oci/instantclient/htdocs/winsoft.html <br /><br />下蝲q个QInstant Client Package - Basic包。然后解压到L目录Q在q个目录下徏立NETWORK文g夹,接着再这个文件夹下再建立ADMIN文g夹,然后建立tnsnames.ora文gQ内容如下: <br /><br />oracledata = <br />(DESCRIPTION = <br />(ADDRESS_LIST = <br />(ADDRESS = (PROTOCOL = TCP)(HOST = yourhostIp )(PORT = 1521)) <br />) <br />(CONNECT_DATA = <br />(SERVICE_NAME = yourSID ) <br />) <br />) <br />q里Ҏ自己的实际情况配|。接着打开PL/SQLQ在perference里面讄OCI Library和Oracle_homeQ我的设|是OCI Library=c:\oracleclient\oci.dll,Oracle_home=c:\oracleclient?nbsp;<br /><br />  Ҏ自己的实际情况配|,其实是刚才下蝲下来的那个包的\径?nbsp;<br /><br />原文q接:http://www.bootad.cn/post/185.html <br /><br /><br /><br /><br /><br /><br /><br /><span style="font-size: large; "><strong style="font-weight: bold; ">oracle字符?/strong> </span>  <br />详细信息可以google搜烦Q?subset-superset pairs site:oracle.com"</p><p style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; padding-top: 0px; padding-right: 0px; padding-bottom: 0px; padding-left: 0px; "><br />讄window的字W集Qregedit-&gt;HKEY_LOCAL_MACHINE-&gt;SOFTWARE-&gt;ORACLE-&gt;HOMEO-&gt;NLS_LANG <br />windows本nQSIMPLIFIED <br />AMERICAN_AMERICA.ZHS16GBK <br /><br />在DOS下查看字W集Qecho %NLS_LANG% <br /><br /><br />在不同数据库做数据迁UR同其它pȝ交换数据{,常常因ؓ字符集不同而导致迁Ud败或数据库内数据变成q。现在我oracle字符集相关的一些知识做个简单ȝ <br /><br />一、什么是oracle字符?nbsp;<br /><br />Oracle字符集是一个字节数据的解释的符号集?有大之?有相互的包容关系。ORACLE 支持国家语言的体pȝ构允怽使用本地化语a来存储,处理Q检索数据。它使数据库工具Q错误消息,排序ơ序Q日期,旉Q货币,数字Q和日历自动适应本地化语a和^台?nbsp;<br /><br />影响oracle数据库字W集最重要的参数是NLS_LANG参数。它的格式如? <br /><br />NLS_LANG = language_territory.charset <br /><br />它有三个l成部分(语言、地域和字符?Q每个成分控制了NLS子集的特性。其? <br /><br />Language 指定服务器消息的语言Qterritory 指定服务器的日期和数字格式,charset 指定字符集。如:AMERICAN _ AMERICA. ZHS16GBK <br /><br />从NLS_LANG的组成我们可以看出,真正影响数据库字W集的其实是W三部分。所以两个数据库之间的字W集只要W三部分一样就可以怺导入导出数据Q前面媄响的只是提示信息是中文还是英文?nbsp;<br /><br />二、如何查询Oracle的字W集 <br /><br />很多人都到q因为字W集不同而数据导入p|的情c这涉及三方面的字符集,一是oracel server端的字符集,二是oracle client端的字符?三是dmp文g的字W集。在做数据导入的时候,需要这三个字符集都一致才能正导入?nbsp;<br /><br />1、查询oracle server端的字符?nbsp;<br /><br />有很多种Ҏ可以查出oracle server端的字符集,比较直观的查询方法是以下q种: <br /><br />SQL&gt;select userenv(‘language’) from dual; <br /><br />l果cM如下:AMERICAN _ AMERICA. ZHS16GBK <br /><br />2、如何查询dmp文g的字W集 <br /><br />用oracle的exp工具导出的dmp文g也包含了字符集信息,dmp文g的第2 和第3个字节记录了dmp文g的字W集。如果dmp文g不大Q比如只有几M或几十MQ可以用UltraEdit打开(16q制方式)Q看W?W?个字节的内容Q如0354Q然后用以下SQL查出它对应的字符? <br /><br />SQL&gt; select nls_charset_name(to_number('0354','xxxx')) from dual; <br /><br />ZHS16GBK <br /><br />如果dmp文g很大Q比如有2G以上(q也是最常见的情?Q用文本~辑器打开很慢或者完全打不开Q可以用以下命o(在unixL?: <br /><br />cat exp.dmp |od -x|head -1|awk '{print $2 $3}'|cut -c 3-6 <br /><br />然后用上qSQL也可以得到它对应的字W集?nbsp;<br /><br />3、查询oracle client端的字符?nbsp;<br /><br />q个比较单。在windowsq_下,是注册表里面相应OracleHome的NLS_LANG。还可以在dosH口里面自己讄Q比? <br /><br />set nls_lang=AMERICAN_AMERICA.ZHS16GBK <br /><br />q样只影响q个H口里面的环境变量?nbsp;<br /><br />在unixq_下,是环境变量NLS_LANG?nbsp;<br /><br />$echo $NLS_LANG <br /><br /><br />AMERICAN_AMERICA.ZHS16GBK <br /><br />如果查的l果发现server端与client端字W集不一_L一修改为同server端相同的字符集?nbsp;<br /><br />三、修改oracle的字W集 <br /><br /><strong style="font-weight: bold; ">上文说过Qoracle的字W集有互相的包容关系。如us7ascii是 zhs16gbk的子?从us7ascii到zhs16gbk不会有数据解释上的问?不会有数据丢失。在所有的字符集中utf8应该是最?因ؓ它基于unicode,双字节保存字W?也因此在存储I间上占用更??nbsp;<br /></strong>一旦数据库创徏后,数据库的字符集理Z讲是不能改变的。因此,在设计和安装之初考虑使用哪一U字W集十分重要。根据Oracle的官方说明,字符集的转换是从子集到超集受支持,反之不行。如果两U字W集之间Ҏ没有子集和超集的关系Q那么字W集的{换是不受oracle支持的。对数据库server而言Q错误的修改字符集将会导致很多不可测的后果,可能会严重媄响数据库的正常运行,所以在修改之前一定要认两种字符集是否存在子集和集的关pR一般来_除非万不得已Q我们不修改oracle数据库server端的字符集。特别说明,我们最常用的两U字W集ZHS16GBK和ZHS16CGB231280之间不存在子集和集关系Q因此理Z讲这两种字符集之间的怺转换不受支持?nbsp;<br /><br />1、修改server端字W集(不徏议? <br /><br />在oracle 8之前Q可以用直接修改数据字典表props$来改变数据库的字W集。但oracle8之后Q至有三张pȝ表记录了数据库字W集的信息,只改props$表ƈ不完全,可能引v严重的后果。正的修改Ҏ如下: <br /><br />$sqlplus /nolog <br /><br /><br />SQL&gt;conn / as sysdba; <br /><br />若此时数据库服务器已启动Q则先执行SHUTDOWN IMMEDIATE命o关闭数据库服务器Q然后执行以下命? <br /><br />SQL&gt;STARTUP MOUNT; <br /><br />SQL&gt;ALTER SYSTEM ENABLE RESTRICTED SESSION; <br /><br />SQL&gt;ALTER SYSTEM SET JOB_QUEUE_PROCESSES=0; <br /><br /><br />SQL&gt;ALTER SYSTEM SET AQ_TM_PROCESSES=0; <br /><br />SQL&gt;ALTER DATABASE OPEN; <br /><br />SQL&gt;ALTER DATABASE CHARACTER SET ZHS16GBK; <br /><br />SQL&gt;ALTER DATABASE national CHARACTER SET ZHS16GBK; <br /><br />SQL&gt;SHUTDOWN IMMEDIATE; <br /><br />SQL&gt;STARTUP <br /><br />2、修改dmp文g字符?nbsp;<br /><br />上文说过Qdmp文g的第2W?字节记录了字W集信息Q因此直接修改dmp文g的第 2W?字节的内容就可以‘?#8217;qoracle的检查。这样做理论上也仅是从子集到集可以修改Q但很多情况下在没有子集和超集关pȝ情况下也可以修改Q我们常用的一些字W集Q如US7ASCIIQWE8ISO8859P1QZHS16CGB231280QZHS16GBK基本都可以改。因为改的只是dmp 文gQ所以媄响不大?nbsp;<br /><br />具体的修Ҏ法比较多Q最单的是直接用UltraEdit修改dmp文g的第2和第3个字节。比如想dmp文g的字W集改ؓZHS16GBKQ可以用以下SQL查出该种字符集对应的16q制代码: <br /><br />SQL&gt; select to_char(nls_charset_id('ZHS16GBK'), 'xxxx') from dual; <br /><br /><br />0354 <br /><br />然后dmp文g??字节修改?354卛_?nbsp;<br /><br />如果dmp文g很大Q用ue无法打开Q就需要用E序的方法了。网上有人用java存储q程写了转换的程?用java存储q程的好处是通用性教好,~点是比较麻?。我在windows下测试通过。但要求oracle数据库一定要安装 JVM选项。有兴趣的朋友可以研I一下程序代?nbsp;<br /><br /><br /><br />                             关闭Oracle 开动启动: <br /><br />在你的管?-- 服务---扑ֈorcl的所有服?属性改成手机的p?想用的话只要起二个服?一个是server,一个是tns服务. <br /><br /><br /><br /><span style="font-size: large; "><strong style="font-weight: bold; ">windows下Orcale查询l果中文昄Qؕ码问?/strong> </span> <br /><br />q有最后一个问题,需要设|一个字W集Q这h询出来的数据才不会是qQ写一个批处理pldev. bat攑ֈpl安装目录下,内容如下Q?nbsp;<br /><br />set nls_lang=SIMPLIFIED CHINESE_CHINA.ZHS16GBK <br />PLSQLDev.exe <br /><br />q个字符集,指的是服务器端的字符集,h据实际情况配|?nbsp;<br /><br />或者: <br /><img src="http://dl.iteye.com/upload/picture/pic/49695/dbbb97e6-4a8a-3a4e-bd68-1309a3d62624.jpg" alt="" style="border-top-width: 0px; border-right-width: 0px; border-bottom-width: 0px; border-left-width: 0px; border-style: initial; border-color: initial; " height="514" width="426" /></p></span></span></div><img src ="http://www.aygfsteel.com/chenying19890808/aggbug/353355.html" width = "1" height = "1" /><br><br><div align=right><a style="text-decoration:none;" href="http://www.aygfsteel.com/chenying19890808/" target="_blank">wokaoJune</a> 2011-06-29 14:28 <a href="http://www.aygfsteel.com/chenying19890808/archive/2011/06/29/353355.html#Feedback" target="_blank" style="text-decoration:none;">发表评论</a></div>]]></description></item><item><title>【PL/SQL 习题】?】删除日期无用的I格http://www.aygfsteel.com/chenying19890808/archive/2011/02/03/343891.htmlwokaoJunewokaoJuneThu, 03 Feb 2011 12:37:00 GMThttp://www.aygfsteel.com/chenying19890808/archive/2011/02/03/343891.htmlhttp://www.aygfsteel.com/chenying19890808/comments/343891.htmlhttp://www.aygfsteel.com/chenying19890808/archive/2011/02/03/343891.html#Feedback0http://www.aygfsteel.com/chenying19890808/comments/commentRss/343891.htmlhttp://www.aygfsteel.com/chenying19890808/services/trackbacks/343891.html阅读全文

wokaoJune 2011-02-03 20:37 发表评论
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【PL/SQL 习题】?】求圆的面积http://www.aygfsteel.com/chenying19890808/archive/2011/02/03/343886.htmlwokaoJunewokaoJuneThu, 03 Feb 2011 05:26:00 GMThttp://www.aygfsteel.com/chenying19890808/archive/2011/02/03/343886.htmlhttp://www.aygfsteel.com/chenying19890808/comments/343886.htmlhttp://www.aygfsteel.com/chenying19890808/archive/2011/02/03/343886.html#Feedback0http://www.aygfsteel.com/chenying19890808/comments/commentRss/343886.htmlhttp://www.aygfsteel.com/chenying19890808/services/trackbacks/343886.html阅读全文

wokaoJune 2011-02-03 13:26 发表评论
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【PL/SQL W记 1】用替代变量时Q如何合二ؓ一http://www.aygfsteel.com/chenying19890808/archive/2011/02/02/343873.htmlwokaoJunewokaoJuneWed, 02 Feb 2011 08:12:00 GMThttp://www.aygfsteel.com/chenying19890808/archive/2011/02/02/343873.htmlhttp://www.aygfsteel.com/chenying19890808/comments/343873.htmlhttp://www.aygfsteel.com/chenying19890808/archive/2011/02/02/343873.html#Feedback0http://www.aygfsteel.com/chenying19890808/comments/commentRss/343873.htmlhttp://www.aygfsteel.com/chenying19890808/services/trackbacks/343873.html阅读全文

wokaoJune 2011-02-02 16:12 发表评论
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ORA-01843: 无效的月?/title><link>http://www.aygfsteel.com/chenying19890808/archive/2011/02/02/343871.html</link><dc:creator>wokaoJune</dc:creator><author>wokaoJune</author><pubDate>Wed, 02 Feb 2011 06:46:00 GMT</pubDate><guid>http://www.aygfsteel.com/chenying19890808/archive/2011/02/02/343871.html</guid><wfw:comment>http://www.aygfsteel.com/chenying19890808/comments/343871.html</wfw:comment><comments>http://www.aygfsteel.com/chenying19890808/archive/2011/02/02/343871.html#Feedback</comments><slash:comments>0</slash:comments><wfw:commentRss>http://www.aygfsteel.com/chenying19890808/comments/commentRss/343871.html</wfw:commentRss><trackback:ping>http://www.aygfsteel.com/chenying19890808/services/trackbacks/343871.html</trackback:ping><description><![CDATA[     摘要:   <a href='http://www.aygfsteel.com/chenying19890808/archive/2011/02/02/343871.html'>阅读全文</a><img src ="http://www.aygfsteel.com/chenying19890808/aggbug/343871.html" width = "1" height = "1" /><br><br><div align=right><a style="text-decoration:none;" href="http://www.aygfsteel.com/chenying19890808/" target="_blank">wokaoJune</a> 2011-02-02 14:46 <a href="http://www.aygfsteel.com/chenying19890808/archive/2011/02/02/343871.html#Feedback" target="_blank" style="text-decoration:none;">发表评论</a></div>]]></description></item><item><title>Oracle PLSQL实例_解(原书W?? 源码下蝲http://www.aygfsteel.com/chenying19890808/archive/2011/02/02/343870.htmlwokaoJunewokaoJuneWed, 02 Feb 2011 05:53:00 GMThttp://www.aygfsteel.com/chenying19890808/archive/2011/02/02/343870.htmlhttp://www.aygfsteel.com/chenying19890808/comments/343870.htmlhttp://www.aygfsteel.com/chenying19890808/archive/2011/02/02/343870.html#Feedback1http://www.aygfsteel.com/chenying19890808/comments/commentRss/343870.htmlhttp://www.aygfsteel.com/chenying19890808/services/trackbacks/343870.html阅读全文

wokaoJune 2011-02-02 13:53 发表评论
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专家解读:如何快速成Z个合格的Oracle DBAhttp://www.aygfsteel.com/chenying19890808/archive/2011/02/01/343857.htmlwokaoJunewokaoJuneTue, 01 Feb 2011 14:32:00 GMThttp://www.aygfsteel.com/chenying19890808/archive/2011/02/01/343857.htmlhttp://www.aygfsteel.com/chenying19890808/comments/343857.htmlhttp://www.aygfsteel.com/chenying19890808/archive/2011/02/01/343857.html#Feedback0http://www.aygfsteel.com/chenying19890808/comments/commentRss/343857.htmlhttp://www.aygfsteel.com/chenying19890808/services/trackbacks/343857.html阅读全文

wokaoJune 2011-02-01 22:32 发表评论
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Oracle 基础知识习题175?/title><link>http://www.aygfsteel.com/chenying19890808/archive/2011/02/01/343849.html</link><dc:creator>wokaoJune</dc:creator><author>wokaoJune</author><pubDate>Tue, 01 Feb 2011 08:39:00 GMT</pubDate><guid>http://www.aygfsteel.com/chenying19890808/archive/2011/02/01/343849.html</guid><wfw:comment>http://www.aygfsteel.com/chenying19890808/comments/343849.html</wfw:comment><comments>http://www.aygfsteel.com/chenying19890808/archive/2011/02/01/343849.html#Feedback</comments><slash:comments>1</slash:comments><wfw:commentRss>http://www.aygfsteel.com/chenying19890808/comments/commentRss/343849.html</wfw:commentRss><trackback:ping>http://www.aygfsteel.com/chenying19890808/services/trackbacks/343849.html</trackback:ping><description><![CDATA[     摘要:   ORACLE数据库课E习?        1 通过SQL*PLUS{数据库讉K工具d数据库服务器? 所需的数据库q接串是在以下哪个文件中定义? )A (A) tnsnames.ora (B) sqlnet.ora (C) listener.ora (D) init.ora (E) 以上...  <a href='http://www.aygfsteel.com/chenying19890808/archive/2011/02/01/343849.html'>阅读全文</a><img src ="http://www.aygfsteel.com/chenying19890808/aggbug/343849.html" width = "1" height = "1" /><br><br><div align=right><a style="text-decoration:none;" href="http://www.aygfsteel.com/chenying19890808/" target="_blank">wokaoJune</a> 2011-02-01 16:39 <a href="http://www.aygfsteel.com/chenying19890808/archive/2011/02/01/343849.html#Feedback" target="_blank" style="text-decoration:none;">发表评论</a></div>]]></description></item><item><title>CASE中文字符集问?http://www.aygfsteel.com/chenying19890808/archive/2011/01/31/343820.htmlwokaoJunewokaoJuneMon, 31 Jan 2011 13:35:00 GMThttp://www.aygfsteel.com/chenying19890808/archive/2011/01/31/343820.htmlhttp://www.aygfsteel.com/chenying19890808/comments/343820.htmlhttp://www.aygfsteel.com/chenying19890808/archive/2011/01/31/343820.html#Feedback0http://www.aygfsteel.com/chenying19890808/comments/commentRss/343820.htmlhttp://www.aygfsteel.com/chenying19890808/services/trackbacks/343820.html阅读全文

wokaoJune 2011-01-31 21:35 发表评论
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