调整参数导致数据库无法启动

.oraenv xxx

十多年的黄陂网站建设经验，针对设计、前端、开发、售后、文案、推广等六对一服务，响应快，48小时及时工作处理。成都营销网站建设的优势是能够根据用户设备显示端的尺寸不同，自动调整黄陂建站的显示方式，使网站能够适用不同显示终端，在浏览器中调整网站的宽度，无论在任何一种浏览器上浏览网站，都能展现优雅布局与设计，从而大程度地提升浏览体验。成都创新互联公司从事“黄陂网站设计”,“黄陂网站推广”以来，每个客户项目都认真落实执行。

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