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   a¡¢ÒÔsysdbaÉí·ÝµÇ½PL/SQL »òÕß Worksheet
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      show parameter processes;
   c¡¢¸ü¸ÄϵͳÁ¬½ÓÊý
      alter system set processes=1000 scope=spfile; ......

ORA 00054´íÎó OracleÊý¾Ý¿âµÄËø²Î¿¼×ÊÁÏ

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    select session_id from v$locked_object;  --Ê×Ïȵõ½±»Ëø¶ÔÏóµÄsession_id
    SELECT sid, serial#, username, osuser from v$session where sid = session_id;   --ͨ¹ýÉÏÃæµÃµ½µÄsession_idȥȡµÃv$sessionµÄsidºÍserial#£¬È»ºó¶Ô¸Ã½ø³Ì½øÐÐÖÕÖ¹¡£
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oracle DBTIMEZONEÊ±Çøµ÷Õû

select dbtimezone from dual ;  --²é¿´Êý¾Ý¿âÊ±Çø
select sessiontimezone from dual ;  --²é¿´»á»°Ê±Çø
1.select u.name || '.' || o.name || '.' || c.name TSLTZcolumn
       from sys.obj$ o, sys.col$ c, sys.user$ u
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