oracle impʱ±¨IMP 00032£¬IMP 00008½â¾ö°ì·¨
oracle impʱ±¨£º
IMP-00032: SQL statement exceeded buffer length
IMP-00008: unrecognized statement in the export file
½â¾ö°ì·¨:
½«impÓï¾äÓÉ
imp username/userpass@oraSID file=userdb_20100325.dmp full=y
¸ü¸ÄΪ£º
imp username/userpass@oraSID file=userdb_20100325.dmp full=y buffer=5400000
Ïà¹ØÎĵµ£º
Êý¾Ý×Öµädict×ÜÊÇÊôÓÚOracleÓû§sysµÄ¡£
¡¡¡¡1¡¢Óû§£º
¡¡¡¡¡¡select username from dba_users;
¡¡¡¡¸Ä¿ÚÁî
¡¡¡¡¡¡alter user spgroup identified by spgtest;
¡¡¡¡2¡¢±í¿Õ¼ä£º
¡¡¡¡¡¡select * from dba_data_files;
¡¡¡¡¡¡select * from dba_tablespaces;//±í¿Õ¼ä
¡¡¡¡¡¡select tablespace_name,sum(bytes), sum(b ......
oracleÖ´Ðмƻ®µÄһЩ¸ÅÄî(»ù´¡µÄ¼ÇÒä)
¿ªÊ¼Ñ§Ï°ORACLEÓï¾äÓÅ»¯,´ÓÖ´Ðмƻ®¿ªÊ¼,ÏÈÊìϤÕâЩÃû´ÊÒÔ¼°»ù±¾º¬Òå,¼ÇÒäÔÚÎÒÄÔ×ÓÀï,2010-04-10
Rowid£ºÏµÍ³¸øoracleÊý¾ÝµÄÿÐи½¼ÓµÄÒ»¸öαÁУ¬°üº¬Êý¾Ý±íÃû³Æ£¬Êý¾Ý¿âid£¬´æ´¢Êý¾Ý¿âidÒÔ¼°Ò»¸öÁ÷Ë®ºÅµÈÐÅÏ¢£¬rowidÔÚÐеÄÉúÃüÖÜÆÚÄÚΨһ¡£
Recursive sql£ºÎªÁËÖ´ÐÐÓû§Óï¾ ......
1¡¢ORA£12541£ºTNS£ºÃ»ÓмàÌýÆ÷ ¡¡¡¡
ÔÒò£ºÃ»ÓÐÆô¶¯¼àÌýÆ÷»òÕß¼àÌýÆ÷Ë𻵡£Èç¹ûÊÇǰÕߣ¬Ê¹ÓÃÃüÁînet start OracleOraHome81TNSListener£¨Ãû×Ö¿ÉÄÜÓгöÈ룩¼´¿É£»Èç¹ûÊǺóÕߣ¬ÔòʹÓÓNet8 Configuration Assistant”¹¤¾ßÏòµ¼Ö®“¼àÌý³ÌÐòÅäÖÔÔö¼ÓÒ»¸ö¼àÌýÆ÷¼´¿É£¨»ù±¾²» ......
1¡¢µÇ¼·½·¨:£ºsys or systemµÇ¼
Õ˺ţºsystem
ÃÜÂ룺system as sysdba---------¡·ÃÜÂë+as sysdba
conn system/password as sysdba
ʹÓÃÃüÁ
sql>alter user scott account unlock;
sql> commit;
Í ......
OracleµÄÓÅ»¯Æ÷ÓÐÁ½ÖÖÓÅ»¯·½Ê½(ÕûÀí), 2010-04-13
RBO·½Ê½£º»ùÓÚ¹æÔòµÄÓÅ»¯·½Ê½(Rule-Based Optimization£¬¼ò³ÆÎªRBO)
ÓÅ»¯Æ÷ÔÚ·ÖÎöSQLÓï¾äʱ,Ëù×ñѵÄÊÇOracleÄÚ²¿Ô¤¶¨µÄһЩ¹æÔò¡£±ÈÈçÎÒÃdz£¼ûµÄ£¬µ±Ò»¸öwhere×Ó¾äÖеÄÒ»ÁÐÓÐË÷Òýʱȥ×ßË÷Òý¡£
CBO·½Ê½£º»ùÓÚ´ú¼ÛµÄÓÅ»¯·½Ê½(Cost-Based Optimization£¬¼ò³ÆÎªCBO ......