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      delete from tbl_talbe
      where (col1,col2,col3) in
     (select col1,col2,col3
       from tbl_table
       group by col1,col2,col3
       having count(*)>1)
     and rowid not in
     (
        select max(rowid)
        from tbl_table
        group by col1,col2,col3
        having count(*) >1
     )
    


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ÔÚ/etc/rc.d/init.d/ ´´½¨oracle10gÎļþ
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chmod a+x oracle10g
[root@test~]# vi /etc/rc.d/init.d/oracle10g
#!/bin/bash
#chkconfig:345 51 49
#description:starts the oracle database deamons
#
ORACLE_HOME=/oracle/product/10.2.0/db_1
ORACLE_OWNER=oracle
case "$1" in
start)
echo ......

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2£©SunµÄHotSpot ......

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1.select name,log_mode from v$database;
NAME               LOG_MODE
------------------ ------------------------
QUERY           NOARCHIVELO ......

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