上一篇中卸载了数据库，并删除了数据库软件。
在文章的开头已经提过，RAC环境的卸载不当会导致问题。正常情况下，应该首先卸载CLUSTER所做的修改，然后再卸载CLUSTERWARE。
正常情况下应该在ORA_CLS_HOME目录下执行：/install/rootdelete.sh remote nosharedhome –force，在RAC的每个节点上都应该执行这个操作，然后在其中一个节点上执行/install/rootdeinstall.sh。删除ASM实例对裸设备头的修改。
但是如果卸载的时候没有注意，很容易没有进行CLUSTER的清理就直接卸载了CLUSTER环境。
比如下面不进行清理而直接卸载CLUSTERWARE：
$ cd $ORACLE_HOME/../crs/oui/bin
$ ./runInstaller
Starting Oracle Universal Installer...
Checking installer requirements...
Checking operating system version: must be 5.8, 5.9 or 5.10. Actual 5.8
Passed
Checking Temp space: must be greater than 150 MB. Actual 11267 MB Passed
Checking monitor: must be configured to display at least 256 colors. Actual 16777216 Passed
All installer requirements met.
Preparing to launch Oracle Universal Installer from /tmp/OraInstall2010-04-22_05-45-29PM. Please wait ...$ Oracle Universal Installer, Version10.2.0.1.0 Production
Copyright (C) 1999, 2005, Oracle. All rights reserved.
仍然点击Deinstall Products。选择CLUSTERWARE的安装目录，这里是OraCrs10g_home1，然后点击Remove进行删除：
Oracle会弹出卸载的组件详细明细，确认后，开始卸载。
Oracle会弹出一个提示，说明ClusterWare的安装目录/data/oracle/product/10.2/crs将会在卸载后被删除，如果确认删除按yes，不删除这个目录按no，cancel则取消操作。这里选择yes继续。
在删除CLUSTER的过程中也出现了告警，说明在racnode2和racnode3节点上，有些目录没有权限删除，这种警告是正常的，可以忽略。
卸载结束后，检查日志文件，文件的位置仍然是在ORACLE_BASE/oraInventory/log目录下：
INFO: Saving serialized component list for /data/oracle/product/10.2/crs
INFO: Updating XML inventory.
INFO: Saving comps.xml for /data/oracle/product/10.2/crs
INFO: Current Inventory:
Oracle Home: OraCrs10g_home1
INFO: Updating files in Oracle home '/data/oracle/product/10.2/crs' to remote nodes 'racnode2,racnode3'.
INFO: List of files to be excluded from:null
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WARNING: Could not rename file '/tmp/OraInstall2010-04-22_06-34-16PM/installCopyFile.lst' to '/tmp/OraInstall2010-04-22_06-34-16PM/i
nstallCopyFile.lst.bak'.
WARNING: Could not rename file '/tmp/OraInstall2010-04-22_06-34-16PM/installRemoveFile.lst' to '/tmp/OraInstall2010-04-22_06-34-16PM
/installRemoveFile.lst.bak'.
SEVERE: java.io.FileNotFoundException: /tmp/OraInstall2010-04-22_06-34-16PM/installRemoveFile.lst (No such file or directory)
at java.io.FileInputStream.open(Native Method)
at java.io.FileInputStream.<init>(FileInputStream.java:106)
at java.io.FileInputStream.<init>(FileInputStream.java:66)
at java.io.FileReader.<init>(FileReader.java:41)
at oracle.sysman.oii.oiix.OiixFileOps.appendFilePw(OiixFileOps.java:2349)
at oracle.sysman.oii.oiix.OiixFileOps.appendFile(OiixFileOps.java:2373)
at oracle.sysman.oii.oiip.oiipg.OiipgClusterLogger.appendFilesToOH(OiipgClusterLogger.java:673)
at oracle.sysman.oii.oiip.oiipg.OiipgClusterLogger.appendFilesToOH(OiipgClusterLogger.java:626)
at oracle.sysman.oii.oiip.oiipg.OiipgClusterLogger.updateListFiles(OiipgClusterLogger.java:319)
at oracle.sysman.oii.oiif.oiifw.OiifwClusterCopyWCCE.doOperation(OiifwClusterCopyWCCE.java:435)
at oracle.sysman.oii.oiif.oiifb.OiifbCondIterator.iterate(OiifbCondIterator.java:171)
at oracle.sysman.oii.oiif.oiifw.OiifwActionsPhaseWCDE.doOperation(OiifwActionsPhaseWCDE.java:606)
at oracle.sysman.oii.oiic.OiicDeinstallSession$OiicActionsThread.run(OiicDeinstallSession.java:2431)
SEVERE: java.io.FileNotFoundException: /tmp/OraInstall2010-04-22_06-34-16PM/installDirFile.lst (No such file or directory)