redhat6.0+oracle11g2 运行dbca时候出错An unexpected error has been detected by HotSpot Virtual Machine:

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[INS-20802] Oracle Net Configuration Assistant failed。在安装Oracle 11g R2时出现了该错误提示。以前安装的时候没有碰到过类似
的错误。原来是64bit和32bit系统兼容性的问题。如果基于64bit硬件安装32bit 的Linux 和32bit的Oracle 11g,则需要安装patch 8670579。下
面给出patch的安装过程。

一、错误提示
    [INS-20802] Oracle Net Configuration Assistant failed .
    Cause -- The plug-in failed in its perform method.
    Action -- Refer to the logs or contact Oracle Support Services.
    Log File Location
      /u01/oraInventory/logs/installActions2011-10-27_02_42-57PM.log

    查看日志文件：

    INFO: Oracle Net Services Configuration:
    INFO: #
    INFO: # An unexpected error has been detected by HotSpot Virtual Machine:
    INFO: #
    INFO: # SIGSEGV (0xb) at pc=0xa446a43c, pid=9431, tid=3084382264
    INFO: #
    INFO: # Java VM: Java HotSpot(TM) Client VM (1.5.0_17-b02 mixed mode)
    INFO: # Problematic frame:
    INFO: # C [libnnz11.so+0x3c45c]
    INFO: #
    INFO: # An error report file with more information is saved as hs_err_pid9431.log

    运行dbca同时也出现错误

二、安装环境
    宿主机：Windows 7(32bit) + Vmware server 2.0.2
    客户机：Oracle EnterPrise Linux Server release 5.4 (32bit) + Oracle 11g R2(32bit)

三、Oracle 的Bug信息
    从metalink 获得下列bug 信息
    [ID 942076.1]
    X86 DBCA, NETCA GIVE JAVA HOTSPOT ERROR IF ON X86_64 HARDWARE [ID 942076.1]
    You are encountering published Bug 8930861, “X86 DBCA, NETCA GIVE JAVA HOTSPOT ERROR IF ON X86_64 HARDWARE”

    You have Oracle’s 32-bit 11.2.0.1.0 RDBMS software, a supported 32-bit Linux OS, but you are on 64-bit x86_64 hardware.

    the command “cat /proc/cpuinfo” shows:
    model name : Quad-Core AMD Opteron(tm) Processor 2356

    Solution
    1. Please find out if there is any business reason that the 64-bit hardware is only running a
    32-bit OS. If not, then Oracle recommends that you re-install a 64-bit OS and 64-bit Oracle to
    avoid published Bug 8930861, “X86 DBCA, NETCA GIVE JAVA HOTSPOT ERROR IF ON X86_64 HARDWARE”

    2. If there is some business reason that you must use 64-bit hardware running a
    32-bit Linux OS, then before you can use the 11gR2 DBCA or NETCA tools, you will need to apply patch 8670579 , “NETCA/DBCA
    FAILED WITH HOTSPOT VIRTUAL MACHINE”. You will be downloading and using file p8670579_112010_LINUX.zip

    从上面的描述可知，是将32bit的Oracle 和32bit的Linux 安装到了X86_64的硬件之上，所以出现上述问题，建议安装64bit操作系统和64bit
    Oracle 。可以解决的办法是安装补丁p8670579_112010_LINUX.zip。补丁下载地址：http://download.csdn.net/source/3253906

四、安装补丁
    1、在安装的过程中出现该错误，先不退出安装程序，而是安装补丁文件，再点击安装程序的retry，继续安装即可。
    2、如果在安装数据库的过程中不创建数据库，则不会出现该错误提示，而后续使用dbca或netca会触发同样的错误，因此使用dbca或netca
       前先安装补丁。
    3、安装补丁步骤

注意：在打补丁的时，运行opatch apply 命令的时候可能会遇到 OPatch failed with error code 104 错误。出现这个原因时因为

没有oraInst.loc文件

这其实是一个简单的配置文件，用来定义oraInventory的位置。他的默认地址是在/var/opt/oracle/oraInst.loc。

他的格式为：

> cat /var/opt/oracle/oraInst.loc
inventory_loc=/export/home/oracle/products/10203/oraInventory
inst_group=dba

如果没有这个文件，当我们查看当前有哪些patch时会出报104错：

[oracle@localhost OPatch]$ ./opatch apply
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
Central Inventory : n/a
   from           :
OPatch version    : 11.1.0.6.6
OUI version       : 11.2.0.1.0
OUI location      : /u01/app/oracle/oui
Log file location : n/a

Patch history file: /u01/app/oracle/cfgtoollogs/opatch/opatch_history.txt

OPatch cannot find a valid oraInst.loc file to locate Central Inventory.

OPatch failed with error code 104

当这个文件不在默认的路径时，我们可以加“-invPtrLoc ”来指明oraInst.loc的地址：

/u01/app/oracle/OPatch/opatch apply -invPtrLoc /u01/app/oracle/oraInst.loc

[oracle@orasrv Inst_source]$ cd 8670579/ -->进入到解压路径
[oracle@orasrv 8670579]$ ls -->README.txt文件中提供了安装方法，可以参照进行安装补丁，注意环境变量的配置
etc files README.txt
[oracle@orasrv 8670579]$ /u01/app/oracle/OPatch/opatch apply -->opatch位置： $ORACLE_HOME/OPatch/opatch
Invoking OPatch 11.1.0.6.6 -->使用opatch apply应用补丁，opatch -help获得帮助信息
Oracle Interim Patch Installer version 11.1.0.6.6
Oracle Home : /u01/app/oracle
Central Inventory : /u01/oraInventory
from : /etc/oraInst.loc
OPatch version : 11.1.0.6.6
OUI version : 11.2.0.1.0
OUI location : /u01/app/oracle/oui
Log file location : /u01/app/oracle/cfgtoollogs/opatch/opatch2011-10-27_17-38-25PM.log
Patch history file: /u01/app/oracle/cfgtoollogs/opatch/opatch_history.txt
--------------------------------------------------------------------------------
The patch has more than one Archive Action but there is no Make Action.
--------------------------------------------------------------------------------
ApplySession applying interim patch '8670579' to OH '/u01/app/oracle'
Running prerequisite checks...
OPatch detected non-cluster Oracle Home from the inventory and will patch the local system only.
Please shutdown Oracle instances running out of this ORACLE_HOME on the local system.
(Oracle Home = '/u01/app/oracle')
Is the local system ready for patching? [y|n] -->提示是否将patch应用到本地系统，选y
y
User Responded with: Y
Backing up files and inventory (not for auto-rollback) for the Oracle Home
Backing up files affected by the patch '8670579' for restore. This might take a while...
Backing up files affected by the patch '8670579' for rollback. This might take a while...
Patching component oracle.network.rsf, 11.2.0.1.0...
Updating archive file "/u01/app/oracle/lib/libnnz11.a" with "lib/libnnz11.a/ahseteco.o"
Updating archive file "/u01/app/oracle/lib/libnnz11.a" with "lib/libnnz11.a/am11rkg.o"
Updating archive file "/u01/app/oracle/lib/libnnz11.a" with "lib/libnnz11.a/amsha.o"
Updating archive file "/u01/app/oracle/lib/libnnz11.a" with "lib/libnnz11.a/cpui32.o"
Updating archive file "/u01/app/oracle/lib/libnnz11.a" with "lib/libnnz11.a/sha.o"
Updating archive file "/u01/app/oracle/lib/libnnz11.a" with "lib/libnnz11.a/x931rand.o"
Updating archive file "/u01/app/oracle/lib/libnnz11.a" with "lib/libnnz11.a/am11dkg.o"
Updating archive file "/u01/app/oracle/lib/libnnz11.a" with "lib/libnnz11.a/am931rnd.o"
Updating archive file "/u01/app/oracle/lib/libnnz11.a" with "lib/libnnz11.a/amsharnd.o"
Updating archive file "/u01/app/oracle/lib/libnnz11.a" with "lib/libnnz11.a/ghash.o"
Updating archive file "/u01/app/oracle/lib/libnnz11.a" with "lib/libnnz11.a/shacomm.o"
Copying file to "/u01/app/oracle/lib/libnnz11.so"
ApplySession adding interim patch '8670579' to inventory
Verifying the update...
Inventory check OK: Patch ID 8670579 is registered in Oracle Home inventory with proper meta-data.
Files check OK: Files from Patch ID 8670579 are present in Oracle Home.
The local system has been patched and can be restarted.
OPatch succeeded. -->提示patch已被成功安装