开始只删除了下面这两个目录，

/home/oracle/agentDownload10.2.0.1.0Oui

/u01/app/oracle/agent/

重新执行./agentDownload.linux -b /u01/app/oracle/agent安装到最后报错：completed with status=255

解决办法：

将/u01/app/oracle/oraInventory/ContentsXML/inventory.xml
文件中“HOME NAME="agent10g"“一行记录删除

[ORCL1@testdb1 /u01/app/oracle/oraInventory/ContentsXML]$pwd
/u01/app/oracle/oraInventory/ContentsXML
[ORCL1@testdb1 /u01/app/oracle/oraInventory/ContentsXML]$cat inventory.xml

<!-- Copyright (c) 2009 Oracle Corporation. All rights Reserved -->
<!-- Do not modify the contents of this file by hand. -->


   10.2.0.5.0
   2.1.0.6.0

总结：删除agent要删除上面三个地方。

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