Ò׽ؽØÍ¼Èí¼þ¡¢µ¥Îļþ¡¢Ãâ°²×°¡¢´¿ÂÌÉ«¡¢½ö160KB

oracleÅúÁ¿(batch)²Ù×÷µÄʹÓÃ

    /**
     * ¸üмǼ£¬Ô­×Ó²Ù×÷£¬²»»ácommit
     * @param sql_id
     * @param condition
     * @return
     * @throws SQLException
     */
    public boolean updateBatchSql(String sql, List<List<String>> conditions) throws SQLException {
        boolean b = false;
        if (sql == null || sql.trim().length() == 0) {
            return b;
        }
        Connection conn = null;
        ResultSet rs = null;
        PreparedStatement pstmt = null;
        //Ö´ÐÐsql
        try {
            conn = handler.getConnection();
            pstmt = conn.prepareStatement(sql);
            //Ñ­»·¸³Öµ
            for (List<String> condition : conditions) {
                for (int i = 0; i < condition.size(); i++) {
                    pstmt.setString(i + 1, condition.get(i));
                }
                pstmt.addBatch();
            }
    &


Ïà¹ØÎĵµ£º

ORACLEÎﻯÊÓͼ ÎﻯÊÓͼÈÕÖ¾½á¹¹

http://space.itpub.net/4227/viewspace-68592
ÎﻯÊÓͼµÄ¿ìËÙË¢ÐÂÒªÇó»ù±¾±ØÐ뽨Á¢ÎﻯÊÓͼÈÕÖ¾£¬ÕâÆªÎÄÕ¼òµ¥ÃèÊöÒ»ÏÂÎﻯÊÓͼÈÕÖ¾Öи÷¸ö×ֶεĺ¬ÒåºÍÓÃ;¡£
 
ÎﻯÊÓͼÈÕÖ¾µÄÃû³ÆÎªMLOG$_ºóÃæ¸ú»ù±íµÄÃû³Æ£¬Èç¹û±íÃûµÄ³¤¶È³¬¹ý20룬Ôòֻȡǰ20룬µ±½Ø¶Ìºó³öÏÖÃû³ÆÖظ´Ê±£¬Oracle»á×Ô¶¯ÔÚÎﻯÊÓͼÈÕÖ¾Ãû³ÆºóÃæ¼ ......

oracle´¥·¢redoдµÄËĸöÌõ¼þ

µ±LGWR´¦ÓÚ¿ÕÏÐ״̬ʱ£¬ËüÒÀÀµÓÚrdbms rpc messageµÈ´ýʼþ£¬´¦ÓÚÐÝÃß״̬£¬Ö±µ½ÈýÃëʱ¼äµ½£¬Èç¹ûÕâ¸öʱºòLGWR·¢ÏÖÓÐRedoÐÅÏ¢ÐèҪд³öµÄ»°£¬ÄÇôLGWR½«Ö´ÐÐдµÄ²Ù×÷£¬log file parallel writeµÈ´ýʼþ½«»á³öÏÖ¡£
¡¡¡¡×ܽáÒ»ÏÂRedoдµÄ´¥·¢Ìõ¼þ£º
¡¡¡¡1£¬Ã¿ÈýÃëÖÓ³¬Ê±(timeout)£º
µ±LGWR´¦ÓÚ¿ÕÏÐ״̬ʱ£¬ËüÒÀÀµÓÚrdbms r ......

ORACLEÎﻯÊÓͼ Query RewriteµÄÒ»°ãÀí½âÖ®¶þ


   ÔÚOracleµÄQuery RewriteÖÐÖ÷ÒªÓÐÈýµã, µÚÒ»ÊÇҪʹÓÃCBO; µÚ¶þÊÇÒªÉèÖÃquery rewrite enabled²ÎÊýΪTRUE; µÚÈýÊÇÒªÏÈÔñÉèÖÃquery rewrite integrity²ÎÊýµÄÖµ(stale_tolerated, trusted, enforced). ¶ÔÓÚµÚÒ»µã, ÎÒÃÇ×îºÃanalyzeÏà¹ØµÄ±í¼°Ë÷Òý¼°MV; ¶ÔÓÚµÚ¶þµã,Õâ¸ö²ÎÊýÖ»ÓÐÁ½¸öÖµ(true, false), ºÜ¼òµ ......

Oracle ´´½¨ÐòÁÐ

Oracle ´´½¨ÐòÁУº
create sequence SEQ_Tablename_id                                   
increment by   1 &nbs ......

ÔËÐÐÁËOracleµÄLinux·þÎñÆ÷¸ü¸ÄÖ÷»úÃû

ÔËÐÐÁËOracleµÄLinux·þÎñÆ÷¸ü¸ÄÖ÷»úÃû
¼ÙÈçÒª°ÑÖ÷»úÃû¸ÄΪoratest¡£
$±íʾoracleÓû§²Ù×÷£»
#±íʾrootÓû§²Ù×÷¡£
DB£ºoracle10.2
OS£ºRHEL4.5
µÚÒ»²½£¬¹Ø±ÕÊý¾Ý¿âºÍ¼àÌý£¬dbconsole£º
$ dbshut
$ lsnrctl stop
µÚ¶þ²¿£º
# hostname oratest
µÚÈý²½£º
# vi /etc/sysconfig/network
¸ü¸Ähostname²ÎÊý¡£
µÚËIJ½ ......
© 2009 ej38.com All Rights Reserved. ¹ØÓÚE½¡ÍøÁªÏµÎÒÃÇ | Õ¾µãµØÍ¼ | ¸ÓICP±¸09004571ºÅ