调整参数导致数据库无法启动
.oraenv xxx
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alter system set sga_max_size=4g scope=spfile;
sql>alter system set sga_target=4g;
sql>startup force;
ORA-27102: out of memory
SQL> startup nomount
ORA-27102: out of memory
SQL> shutdown immediate
ORA-01034: ORACLE not available
ORA-27101: shared memory realm does not exist
Linux Error: 2: No such file or directory
SQL> quit
Disconnected
--做一个pfile,进去修改设置出错的参数,注意strings出来的控制文件格式可能有问题
[oracle@edsir1p8- dbs]$ strings spfilePROD4.ora >>/home/oracle/aa.ora
[oracle@edsir1p8-PROD4 ~]$ sqlplus / as sysdba
SQL*Plus: Release 11.2.0.1.0 Production on Wed Jun 21 09:14:12 2017
Copyright (c) 1982, 2009, Oracle. All rights reserved.
Connected to an idle instance.
SQL> startup pfile='/home/oracle/aa.ora'
ORACLE instance started.
Total System Global Area 129724416 bytes
Fixed Size 1334996 bytes
Variable Size 113246508 bytes
Database Buffers 8388608 bytes
Redo Buffers 6754304 bytes
Database mounted.
Database opened.
SQL> show parameter spfile;
NAME TYPE VALUE
-spfile string
SQL> create spfile from pfile='/home/oracle/aa.ora' ;
File created.
SQL> shutdown immediate;
Database closed.
Database dismounted.
ORACLE instance shut down.
SQL> startup
ORACLE instance started.
otal System Global Area 129724416 bytes
Fixed Size 1334996 bytes
Variable Size 113246508 bytes
Database Buffers 8388608 bytes
Redo Buffers 6754304 bytes
Database mounted.
Database opened.
SQL> show parameter spfile;
NAME TYPE VALUE
------------------------------------ ----------- --------------------------
----spfile string /u01/app/oracle/product/11.2.0
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