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Oracle在AIX上不停占用系统的内存BUG

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2016-06-07 16:57:52914browse

BUG 3028673--ORACLE ON AIX DOES NOT SHARE MANY CONST STRUCTS - PER PROCESS MEMORY OVERHEAD 即:Oracle on IBM AIX platfor

BUG 3028673--Oracle ON AIX DOES NOT SHARE MANY CONST STRUCTS - PER PROCESS MEMORY OVERHEAD

即:Oracle on IBM AIX platforms (AIX 5L and 4.3.3) use a large amount of memory per dedicated connection. For Oracle 9.2 on AIX 5L the memory required per idle Oracle process appears to be about 5Mb. A significant portion of this is related to non-shared const structures (probably about 1Mb) .造成这个问题是因为AIX上C的编译器问题,,使得本来可以共享的部分,最后都没有共享,造成每个连接进程都浪费了大约1MB的内存。

如果担心是由于使用C编译器而带来的ORACLE 进程占用了过多的内存,则可以通过以下方法来修正这个问题。ORACLE软件本身没有补丁,但是可以通过修改系统环境变量和给系统打补丁来修正。

如果操作系统是AIX 5.2一下版本的,只要一个办法去修改环境变量.

如果操作系统是AIX 5.2以上(含5.2),则最好打系统补丁IY49415,并RELINK ORACLE产品.

安装AIX APAR IY49415补丁.

重新链接数据库产品步骤如下:

?aru=5336110,在这个位置下载脚本

  1) save your current version of $ORACLE_HOME/oracle

  2) create a working directory $ORACLE_HOME/relink

  3) cd to $ORACLE_HOME/relink

  4) unzip the relinking package

  5) link $ORACLE_HOME/bin/oracle to ./oracle0

  6) run the script ./genscript to generate some required files and scripts

  7) run ./relink.sh to generate the new oracle binary oracle0.new.$$

  8) copy oracle0.new.$$ to $ORACLE_HOME/bin/oracle and verify that the permissions match the original oracle binary.

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