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[oracle@ts01 oracle]$ sqlplus ''''/ as sysdba''''
SQL*Plus: Release 9.2.0.4.0 - Production on Tue Nov 15 10:35:11 2005
Copyright (c) 1982, 2002, Oracle Corporation. All rights reserved.
Connected to:
Oracle9i Enterprise Edition Release 9.2.0.4.0 - Production
With the Partitioning, OLAP and Oracle Data Mining options
JServer Release 9.2.0.4.0 - Production
SQL> conn / as sysdba
Connected.
SQL>
在另一个SESSION：
[oracle@ts01 oracle]$ cd /oracle/oradata/TSMISC02
[oracle@ts01 TSMISC02]$ ll
total 681820
drwxr-xr-x 2 oracle oinstall 4096 Nov 15 08:52 archive
-rw-r----- 1 oracle oinstall 1662976 Nov 15 10:35 control01.ctl
-rw-r----- 1 oracle oinstall 1662976 Nov 15 10:35 control02.ctl
-rw-r----- 1 oracle oinstall 1662976 Nov 15 10:35 control03.ctl
-rw-r----- 1 oracle oinstall 20979712 Nov 15 09:23 drsys01.dbf
-rw-r----- 1 oracle oinstall 26222592 Nov 15 09:23 indx01.dbf
-rw-r----- 1 oracle oinstall 20979712 Nov 15 09:23 odm01.dbf
-rw-r----- 1 oracle oinstall 2097664 Nov 15 10:35 redo01.log
-rw-r----- 1 oracle oinstall 2097664 Nov 15 05:48 redo02.log
-rw-r----- 1 oracle oinstall 2097664 Nov 15 08:52 redo03.log
-rw-r----- 1 oracle oinstall 387981312 Nov 15 10:26 system01.dbf
-rw-r----- 1 oracle oinstall 52436992 Nov 15 09:23 system02.dbf
-rw-r----- 1 oracle oinstall 42999808 Nov 1 14:16 temp01.dbf
-rw-r----- 1 oracle oinstall 10493952 Nov 15 09:23 tools01.dbf
-rw-r----- 1 oracle oinstall 52436992 Nov 15 10:28 undotbs2.dbf
-rw-r----- 1 oracle oinstall 26222592 Nov 15 09:23 users01.dbf
-rw-r----- 1 oracle oinstall 47194112 Nov 15 09:23 xdb01.dbf
[oracle@ts01 TSMISC02]$ cat redo01.log| od -x|head
0000000 0200 0000 0200 0000 1000 0000 5c5d 5a5b
0000020 0000 0000 1606 0000 0000 0000 0000 0000
0000040 0000 0000 0000 0000 0000 0000 0000 0000
*
0001000 003e 0000 0001 0000 f0c1 223c 0000 fec1
0001020 0000 0920 0000 0920 98c2 6798 5354 494d
0001040 4353 3230 01ec 0000 1000 0000 0200 0000
0001060 0001 0002 15c2 6798 0000 0000 0000 0000
0001100 0000 0000 0000 0000 0000 0000 0000 0000
0001120 0000 0000 0000 0000 0000 0000 6854 6572
[oracle@ts01 TSMISC02]$ >redo01.log
[oracle@ts01 TSMISC02]$ ll
total 679764
drwxr-xr-x 2 oracle oinstall 4096 Nov 15 08:52 archive
-rw-r----- 1 oracle oinstall 1662976 Nov 15 11:12 control01.ctl
-rw-r----- 1 oracle oinstall 1662976 Nov 15 11:12 control02.ctl
-rw-r----- 1 oracle oinstall 1662976 Nov 15 11:12 control03.ctl
-rw-r----- 1 oracle oinstall 20979712 Nov 15 09:23 drsys01.dbf
-rw-r----- 1 oracle oinstall 26222592 Nov 15 09:23 indx01.dbf
-rw-r----- 1 oracle oinstall 20979712 Nov 15 09:23 odm01.dbf
-rw-r----- 1 oracle oinstall 0 Nov 15 11:12 redo01.log
-rw-r----- 1 oracle oinstall 2097664 Nov 15 05:48 redo02.log
-rw-r----- 1 oracle oinstall 2097664 Nov 15 08:52 redo03.log
-rw-r----- 1 oracle oinstall 387981312 Nov 15 10:57 system01.dbf
-rw-r----- 1 oracle oinstall 52436992 Nov 15 09:23 system02.dbf
-rw-r----- 1 oracle oinstall 42999808 Nov 1 14:16 temp01.dbf
-rw-r----- 1 oracle oinstall 10493952 Nov 15 09:23 tools01.dbf
-rw-r----- 1 oracle oinstall 52436992 Nov 15 11:11 undotbs2.dbf
-rw-r----- 1 oracle oinstall 26222592 Nov 15 09:23 users01.dbf
-rw-r----- 1 oracle oinstall 47194112 Nov 15 09:23 xdb01.dbf
[oracle@ts01 TSMISC02]$
回到SESSION2：
SQL> select * from v$log;
GROUP# THREAD# SEQUENCE# BYTES MEMBERS ARC STATUS
---------- ---------- ---------- ---------- ---------- --- ----------------
FIRST_CHANGE# FIRST_TIM
------------- ---------
1 1 62 2097152 1 NO CURRENT
658443 15-NOV-05
2 1 60 2097152 1 YES INACTIVE
641419 15-NOV-05
3 1 61 2097152 1 YES INACTIVE
649920 15-NOV-05
SQL> set linesize 132
SQL> l
1* select * from v$log
SQL> /
GROUP# THREAD# SEQUENCE# BYTES MEMBERS ARC STATUS FIRST_CHANGE# FIRST_TIM
---------- ---------- ---------- ---------- ---------- --- ---------------- ------------- ---------
1 1 62 2097152 1 NO CURRENT 658443 15-NOV-05
2 1 60 2097152 1 YES INACTIVE 641419 15-NOV-05
3 1 61 2097152 1 YES INACTIVE 649920 15-NOV-05
SQL> alter system switch logfile;
alter system switch logfile
*
ERROR at line 1:
ORA-03113: end-of-file on communication channel
SQL> /
alter system switch logfile
*
ERROR at line 1:
ORA-03114: not connected to ORACLE
SQL> conn / as sysdba
Connected to an idle instance.
SQL> /
alter system switch logfile
*
ERROR at line 1:
ORA-01034: ORACLE not available
SQL> conn / as sysdba
Connected to an idle instance.
SQL>
启动数据库，报错：
SQL> conn / as sysdba
Connected to an idle instance.
SQL>
SQL> startup
ORACLE instance started.
Total System Global Area 236000356 bytes
Fixed Size 451684 bytes
Variable Size 201326592 bytes
Database Buffers 33554432 bytes
Redo Buffers 667648 bytes
Database mounted.
ORA-00316: log 1 of thread 1, type 0 in header is not log file
ORA-00312: online log 1 thread 1: ''''/oracle/oradata/TSMISC02/redo01.log''''
SQL>
SQL> select name,OPEN_MODE from v$database;
NAME OPEN_MODE
--------- ----------
TSMISC02 MOUNTED
SQL> select * from v$instance;
INSTANCE_NUMBER INSTANCE_NAME
--------------- ----------------
HOST_NAME
----------------------------------------------------------------
VERSION STARTUP_T STATUS PAR THREAD# ARCHIVE LOG_SWITCH_
----------------- --------- ------------ --- ---------- ------- -----------
LOGINS SHU DATABASE_STATUS INSTANCE_ROLE ACTIVE_ST
---------- --- ----------------- ------------------ ---------
1 TSMISC02
ts01
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