Oracle修改系统参数导致系统无法启动对pfile文件恢复。

1.当前现象：Oracle启动报错ORA-27102

[oracle@JYDB1 ~]$ sqlplus / as sysdba SQL*Plus: Release 10.2.0.4.0 - Production on 星期四 7月 30 19:55:10 2015

Copyright (c) 1982, 2007, Oracle. All Rights Reserved.

已连接到空闲例程。

SQL> startup ORA-27102: out of memory

Linux-x86_64 Error: 28: No space left on device

2.1 根据当前的spfile文件创建pfile文件

SQL> create pfile='/tmp/pfile0730.bak' from spfile;
文件已创建。

查看当前的初始化参数配置信息：

[oracle@JYDB1 dbs]$ more /tmp/pfile0730.bak
JYZHAO.__db_cache_size=10938744832
JYZHAO.__java_pool_size=117440512
JYZHAO.__large_pool_size=16777216
JYZHAO.__shared_pool_size=1442840576
JYZHAO.__streams_pool_size=33554432
*.audit_file_dest='/opt/app/oracle//admin/JYZHAO/adump'
*.background_dump_dest='/opt/app/oracle//admin/JYZHAO/bdump'
*.compatible='10.2.0.3.0'
*.control_files='/usr3/oradata1/sysdata/control_file/control01.ctl','/usr3/oradata1/sysdata/control_file/control02.ctl','
/usr3/oradata1/sysdata/control_file/control03.ctl'
*.core_dump_dest='/opt/app/oracle//admin/JYZHAO/cdump'
*.db_block_size=8192
*.db_domain=''
*.db_file_multiblock_read_count=16
*.db_files=2048
*.db_name='JYZHAO'
*.dispatchers='(PROTOCOL=TCP) (SERVICE=JYZHAOXDB)'
*.job_queue_processes=10
*.nls_language='SIMPLIFIED CHINESE'
*.nls_territory='CHINA'
*.open_cursors=300
*.pga_aggregate_target=1572864000
*.processes=600
*.remote_login_passwordfile='EXCLUSIVE'
*.resource_limit=TRUE
*.sessions=665
*.sga_target=12582912000
*.undo_management='AUTO'
*.undo_tablespace='UNDOTBS1'
*.user_dump_dest='/opt/app/oracle//admin/JYZHAO/udump'

可以看到，sga=12G，pga=1.5G，

2.2 用pfile文件启动得到相同报错

startup pfile='/tmp/pfile0730.bak'

SQL> startup pfile='/tmp/pfile0730.bak'