来自：http://2843678.blog.51cto.com/2833678/951331
在RHEL 5 中安装Oracle 11G 的时候出现
[INS-20802] Oracle Net Configuration Assistant failed
是oracle数据库的鼓掌，需要下载补丁p8670579_112010_LINUX
解决办法：
1. Oracle帐号操作，上传补丁到/u01下，解压。
[oracle@dbserver u01]$ cd 8670579/
[oracle@dbserver 8670579]$ ls
etc files README.txt
2. 打补丁要注意下，选择Optch目录一般在ORACLE_HOME 目录下
[oracle@dbserver 8670579]$ $ORACLE_HOME/OPatch/opatch apply -invPtrLoc $ORACLE_HOME/oraInst.loc
Invoking OPatch 11.1.0.6.6
Oracle Interim Patch Installer version 11.1.0.6.6
Copyright (c) 2009, Oracle Corporation. All rights reserved.
Oracle Home : /u01/app/oracle/product/11.2.0/db_1
Central Inventory : /u01/app/oraInventory
from : /u01/app/oracle/product/11.2.0/db_1/oraInst.loc
OPatch version : 11.1.0.6.6
OUI version : 11.2.0.1.0
OUI location : /u01/app/oracle/product/11.2.0/db_1/oui
Log file location : /u01/app/oracle/product/11.2.0/db_1/cfgtoollogs/opatch/opatch2012-08-02_21-22-59PM.log
Patch history file: /u01/app/oracle/product/11.2.0/db_1/cfgtoollogs/opatch/opatch_history.txt
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The patch has more than one Archive Action but there is no Make Action.
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ApplySession applying interim patch '8670579' to OH '/u01/app/oracle/product/11.2.0/db_1'
Interim patch 8670579 is a superset of the patch(es) [ 8670579 ] in OH /u01/app/oracle/product/11.2.0/db_1
OPatch will rollback the subset patches and apply the given patch.
Running prerequisite checks...
Prerequisite check "CheckActiveFilesAndExecutables" failed.
The details are:
Following executables are active :
/u01/app/oracle/product/11.2.0/db_1/lib/libnnz11.so
ApplySession failed during prerequisite checks: Prerequisite check "CheckActiveFilesAndExecutables" failed.
System intact, OPatch will not attempt to restore the system
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The following warnings have occurred during OPatch execution:
1) OUI-67078:Interim patch 8670579 is a superset of the patch(es) [ 8670579 ] in OH /u01/app/oracle/product/11.2.0/db_1
--------------------------------------------------------------------------------
OPatch failed with error code 74
成功安装 ，然后重试