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1. ÔÚ ‘¿ªÊ¼’-->‘ÔËÐÐ’Ö´ÐÐcmd
2. ÊäÈ룺sqlplus "/ as sysdba"
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SQL*Plus: Release 9.2.0.1.0 - Production on ÐÇÆÚÈý 5ÔÂ 20 22:07:45 2009
Copyright (c) 1982, 2002, Oracle Corporation.  All rights reserved.
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Oracle9i Enterprise Edition Release 9.2.0.1.0 - Production
With the Partitioning, OLAP and Oracle Data Mining options
JServer Release 9.2.0.1.0 - Production
3. ÊäÈ룺shutdown immediate
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ORA-01109: Êý¾Ý¿âδ´ò¿ª
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ORA-01157: ÎÞ·¨±êʶ/Ëø¶¨Êý¾ÝÎļþ 15 - Çë²ÎÔÄ DBWR ¸ú×ÙÎļþ
ORA-01110: Êý¾ÝÎļþ 15: 'D:\TEST\MY_INDEX1_1.DBF'
5. ¸ù¾ÝµÚ4²½ÐÅÏ¢ÊäÈ룺alter database datafile 'D:\TEST\MY_INDEX1_1.DBF' offline drop
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D:\sqlplus sys/penghj@buaa as sysdba
SQL> show parameter processes;
NAME TYPE VALUE
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aq_tm_processes integer 1
db_writer_processes integ ......

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SQL> select trunc(sysdate,'Q') from dual;
TRUNC(SYSDATE,'Q')
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2.trunc(sysdate,'D') ±¾ÖܵĵÚÒ»Ìì(ÖÜÈÕ)
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TRUNC(SYSDATE,'D')
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