在Oracle关闭情况下如何修改spfile的参数
发布时间：2020-05-27 07:44:16 所属栏目：Oracle 来源：互联网
导读：大家都知道在Oracle中pfile参数是可以手动更改的，但是spfile是二进制文件所以不可以手动更改，但我最近遇到了一个问题，修改参数错误，导致Oracle启动不了，一定要修改spfile该怎么办呢？下面通过这篇文章来一起看看吧。
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发现问题 我使用的Oracle11g，当我敲下如下一段命令后，就让我傻眼了。。 此时的startup报错了，错误为： startup ORA-00844: Parameter not taking MEMORY_TARGET into account ORA-00851: SGA_MAX_SIZE 985661440 cannot be set to more than MEMORY_TARGET 784334848.原因分析 原来在Oracle11g中增加了 解决思路 通过pfile启动Oracle–>在Oracle中通过 实战 create pfile='/home/oracle/pfile.new' from spfile='/u01/app/oracle/product/11.2.0/db_1/dbs/spfilewingdb.ora';
File created.
SQL> exit
Disconnected from Oracle Database 11g Enterprise Edition Release 11.2.0.4.0 - 64bit Production
With the Partitioning,OLAP,Data Mining and Real Application Testing options
通过vi修改pfile.new文件中相应的参数（本文档中是memory_target参数），修改后保存
[oracle@wing ~]$ sqlplus / as sysdba
SQL*Plus: Release 11.2.0.4.0 Production on Mon Feb 15 14:04:46 2016
Copyright (c) 1982,Oracle. All rights reserved.
Connected to an idle instance.
SQL> startup pfile='/home/oracle/pfile.new'
ORACLE instance started.
Total System Global Area 810090496 bytes
Fixed Size 2257520 bytes
Variable Size 415239568 bytes
Database Buffers 390070272 bytes
Redo Buffers 2523136 bytes
Database mounted.
Database opened.
SQL> create spfile='/u01/app/oracle/product/11.2.0/db_1/dbsspfilewingdb.ora' from pfile='/home/oracle/pfile.new';
File created.
SQL> shutdown immediate
Database closed.
Database dismounted.
ORACLE instance shut down.
SQL> exit
Disconnected from Oracle Database 11g Enterprise Edition Release 11.2.0.4.0 - 64bit Production
With the Partitioning,Data Mining and Real Application Testing options
[oracle@wing ~]$ sqlplus / as sysdba
SQL*Plus: Release 11.2.0.4.0 Production on Mon Feb 15 14:08:40 2016
Copyright (c) 1982,Oracle. All rights reserved.
Connected to an idle instance.
SQL>
SQL> startup
ORACLE instance started.
Total System Global Area 810090496 bytes
Fixed Size 2257520 bytes
Variable Size 415239568 bytes
Database Buffers 390070272 bytes
Redo Buffers 2523136 bytes
Database mounted.
Database opened.
SQL> show parameter memory
NAME TYPE
------------------------------------ --------------------------------
VALUE
------------------------------
hi_shared_memory_address integer
0
memory_max_target big integer
800M
memory_target big integer
800M
shared_memory_address integer
0
SQL> show parameter sga
NAME TYPE
------------------------------------ --------------------------------
VALUE
------------------------------
lock_sga boolean
FALSE
pre_page_sga boolean
FALSE
sga_max_size big integer
776M
sga_target big integer
740M
# 至此Oracle使用新的spfile启动成功，参数也得到相应的修改
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