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Oracle HowTo:如何在Linux上扩展SGA超过1.7G
作者：eygle |【转载时请务必以超链接形式标明文章原始出处和作者信息及本声明】链接：http://www.eygle.com/archives/2005/11/oracle_howto_make_sga_17g.html
今天一台Linux服务器扩展了一下内存,达到4G,开发的人自己修改了一下SGA结果数据库无法启动了.
启动不了时,出的错误是这个样子的:
[oracle@neirong oracle]$ sqlplus "/ as sysdba"
SQL*Plus: Release 9.2.0.4.0 - Production on Fri Nov 25 15:43:26 2005
Copyright (c) 1982, 2002, Oracle Corporation. All rights reserved.
Connected to an idle instance.
SQL> startup
ORA-27123: unable to attach to shared memory segment
Linux Error: 22: Invalid argument
Additional information: 1
Additional information: 458753
SQL> exit
Disconnected
在32位平台上,缺省的SGA最大只能扩展到1.7G,如果需要支持更大的内存,就需要降低mapped_base,重新Link Oracle软件.
俺的平台为:
[oracle@neirong bdump]$ cat /etc/redhat-release
Red Hat Enterprise Linux AS release 3 (Taroon Update 2)
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简单操作如下:
cd $ORACLE_HOME/rdbms/lib
cp ksms.s ksms.s.bak ( if u have a ksms.s file)
genksms -s 0x12000000 > ksms.s
make -f ins_rdbms.mk ksms.o
make -f ins_rdbms.mk ioracle
此处先备份ksms.s文件,如果编译过程中出现错误,保证操作可以被恢复:
恢复步骤大致如下:
cd $ORACLE_HOME/rdbms/lib以下是操作日志:
cp ksms.s.bak ksms.s (if u have backup ksms.s file)
genksms > ksms.s
make -f ins_rdbms.mk ksms.o
make -f ins_rdbms.mk ioracle
[oracle@neirong dbs]$ cd $ORACLE_HOME/rdbms/lib
[oracle@neirong lib]$ genksms -s 0x12000000 > ksms.s
[oracle@neirong lib]$ make -f ins_rdbms.mk ksms.o
[oracle@neirong lib]$ make -f ins_rdbms.mk ioracle
- Linking Oracle
rm -f /opt/oracle/product/9.2.0/rdbms/lib/oracle
gcc -o /opt/oracle/product/9.2.0/rdbms/lib/oracle -L/opt/oracle/product/9.2.0/rdbms/lib/
-L/opt/oracle/product/9.2.0/lib/ -L/opt/oracle/product/9.2.0/lib/stubs/
-Wl,-E `test -f /opt/oracle/product/9.2.0/rdbms/lib/skgaioi.o && echo
/opt/oracle/product/9.2.0/rdbms/lib/skgaioi.o` /opt/oracle/product/9.2.0/rdbms/lib/opimai.o
/opt/oracle/product/9.2.0/rdbms/lib/ssoraed.o /opt/oracle/product/9.2.0/rdbms/lib/ttcsoi.o
/opt/oracle/product/9.2.0/lib/nautab.o /opt/oracle/product/9.2.0/lib/naeet.o
/opt/oracle/product/9.2.0/lib/naect.o /opt/oracle/product/9.2.0/lib/naedhs.o
/opt/oracle/product/9.2.0/rdbms/lib/config.o -lserver9 -lodm9 -lskgxp9 -lskgxn9 -lclient9
-lvsn9 -lwtcserver9 -lcommon9 -lgeneric9 /opt/oracle/product/9.2.0/rdbms/lib/defopt.o
-lknlopt `if /usr/bin/ar tv /opt/oracle/product/9.2.0/rdbms/lib/libknlopt.a | grep
xsyeolap.o > /dev/null 2>&1 ; then echo "-loraolap9" ; fi`
-lslax9 -lpls9 -lplp9 -lserver9 -lclient9 -lvsn9 -lwtcserver9 -lcommon9 -lgeneric9
-lknlopt -lslax9 -lpls9 -lplp9 -ljox9 -lserver9 -locijdbcst9 -lwwg9
`cat /opt/oracle/product/9.2.0/lib/ldflags` -lnsslb9 -lncrypt9 -lnsgr9 -lnzjs9
-ln9 -lnl9 -lnro9 `cat /opt/oracle/product/9.2.0/lib/ldflags` -lnsslb9 -lncrypt9
......
mv -f /opt/oracle/product/9.2.0/bin/oracle /opt/oracle/product/9.2.0/bin/oracleO
mv /opt/oracle/product/9.2.0/rdbms/lib/oracle /opt/oracle/product/9.2.0/bin/oracle
chmod 6751 /opt/oracle/product/9.2.0/bin/oracle
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此后数据库可以以超过1.7G的SGA区设置启动:
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这篇 【Oracle HowTo:如何在Linux上扩展SGA超过1.7G】来自 www.eygle.com | CSDN技术网摘| del.icio.us|365Key
SQL> startup
ORACLE instance started.
Total System Global Area 2685476820 bytes
Fixed Size 454612 bytes
Variable Size 1073741824 bytes
Database Buffers 1610612736 bytes
Redo Buffers 667648 bytes
Database mounted.
Database opened.
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这篇 【Oracle HowTo:如何在Linux上扩展SGA超过1.7G】来自 www.eygle.com | CSDN技术网摘| del.icio.us|365Key
By eygle on 2005-11-25 17:06 | Comments (5) | Posted to HowTo | Edit |Pageviews:
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留言 (5)
请教! 我的怎么不是ksms.s 而是ksms.o啊?
我的oracle版本是10gR1的
Posted by: qsxing at December 8, 2005 10:55 AM
如果没有ksms.s可以直接作下一个步骤
genksms > ksms.s
这个操作会生成ksms.s文件.
Posted by: eygle at December 8, 2005 10:58 AM
太感谢了，
Posted by: Jacky at August 26, 2006 6:19 PM
好贴，谢谢
Posted by: Anonymous at December 28, 2006 11:43 AM
谢谢。我也遇到了qsxing 同样的问题。
Posted by: stacyruirui at March 18, 2007 10:10 AM
