案例場景：
在Oracle Linux Server release 5.7上安裝完ORACLE 10g后，順便將PSR（Patch Set Release）p6810189_10204_Linux-x86-64.zip也安裝了。結果在查看補丁時出現了下面情況
[oracle@DB-Server OPatch]$ ./opatch lsinventory
Invoking OPatch 10.2.0.4.2
Oracle Home Path specified is relative path.
OPatch cannot work with relative Oracle Home Paths, please specify the absolute path to Oracle Home.
OPatch failed with error code 1
問題分析：
出現這個問題是因為環境變量ORACLE_HOME（在.bash_profile配置文件里面設置）使用了相對路徑緣故。如下所示：
將環境變量ORACLE_HOME改為ORACLE_HOME=/u01/app/oracle/product/10.2.0/db_1;export ORACLE_HOME后，使用source .bash_profile使之生效。問題即可解決。
[oracle@DB-Server OPatch]$ ./opatch lsinventory
Invoking OPatch 10.2.0.4.2
Oracle Interim Patch Installer version 10.2.0.4.2
Copyright (c) 2007, Oracle Corporation. All rights reserved.
Oracle Home : /u01/app/oracle/product/10.2.0/db_1
Central Inventory : /u01/app/oracle/oraInventory
from : /etc/oraInst.loc
OPatch version : 10.2.0.4.2
OUI version : 10.2.0.4.0
OUI location : /u01/app/oracle/product/10.2.0/db_1/oui
Log file location : /u01/app/oracle/product/10.2.0/db_1/cfgtoollogs/opatch/opatch2014-04-11_14-38-44PM.log
Lsinventory Output file location : /u01/app/oracle/product/10.2.0/db_1/cfgtoollogs/opatch/lsinv/lsinventory2014-04-11_14-38-44PM.txt
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Installed Top-level Products (2):
Oracle Database 10g 10.2.0.1.0
Oracle Database 10g Release 2 Patch Set 3 10.2.0.4.0
There are 2 products installed in this Oracle Home.
There are no Interim patches installed in this Oracle Home.
--------------------------------------------------------------------------------
OPatch succeeded.