一套11.1.0.6的RAC系统在在使用opatch工具时出现了OutOfMemoryError: Java heap space错误，其错误日志如下:
opatch lsinventory
Invoking OPatch 11.1.0.6.2
Oracle Interim Patch Installer version 11.1.0.6.2
Copyright (c) 2007, Oracle Corporation. All rights reserved.
Oracle Home : /u01/oracle/db/11.1.0
Central Inventory : /u01/oraInventory
from : /etc/oraInst.loc
OPatch version : 11.1.0.6.2
OUI version : 11.1.0.7.0
OUI location : /u01/oracle/db/11.1.0/oui
Log file location : /u01/oracle/db/11.1.0/cfgtoollogs/opatch/opatch2011-03-11_03-05-22AM.log
Lsinventory Output file location : /u01/oracle/db/11.1.0/cfgtoollogs/opatch/lsinv/lsinventory2011-03-11_03-05-22AM.txt
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Installed Top-level Products (2):
Oracle Database 11g 11.1.0.6.0
Oracle Database 11g Patch Set 1 11.1.0.7.0
Interim patches (3) :
Patch 8496830 : applied on Wed Mar 30 07:11:26 CDT 2011
Created on 27 Aug 2009, 01:59:52 hrs PST8PDT
Bugs fixed:
8496830
Patch 7327166 : applied on Wed Oct 20 11:25:00 CDT 2010
Created on 31 Dec 2008, 10:49:56 hrs PST8PDT
Bugs fixed:
7327166
Patch 7253531 : applied on Wed Jul 28 14:45:44 CDT 2010
Created on 24 Nov 2008, 03:52:49 hrs PST8PDT
Bugs fixed:
7253531
Exception in thread "Thread-7" Exception in thread "Thread-3" java.lang.OutOfMemoryError: Java heap space
java.lang.OutOfMemoryError: Java heap space
事后发现是由于opatch期间1号节点无法使用ssh服务登陆到其他节点上引起的，修复该故障后问题消失了。
另外提一句我们建议使用最新版本的opatch工具来管理数据库补丁，最新版本的opatch工具可以从
<OPatch - Where Can I Find the Latest Version of OPatch?>下载到！