sorry if i did't put my question clear to you earlier, I am not doing opatch lsinventory against agent OH( /oracle/product/agent10g/agent10g),i am done with the agent patch .

$ opatch lsinventory
Invoking OPatch 10.2.0.3.0

Oracle interim Patch Installer version 10.2.0.3.0
Copyright (c) 2005, Oracle Corporation. All rights reserved..


Oracle Home : /oracle/product/agent10g/agent10g
Central Inventory : /oracle/oraInventory
from : /var/opt/oracle/oraInst.loc
OPatch version : 10.2.0.3.0
OUI version : 10.2.0.3.0
OUI location : /oracle/product/agent10g/agent10g//oui
Log file location : /oracle/product/agent10g/agent10g/cfgtoollogs/opatch/opatch2007-12-12_19-25-19PM.log

Lsinventory Output file location : /oracle/product/agent10g/agent10g/cfgtoollogs/opatch/lsinv/lsinventory2007-12-12_19-25-19PM.txt

--------------------------------------------------------------------------------
Installed Top-level Products (1):

Oracle Management Agent 10.2.0.3.0
There are 1 products installed in this Oracle Home.


Interim patches (1) :

Patch 5854190 : applied on Tue Dec 11 15:41:22 GMT 2007
Created on 8 May 2007, 04:48:06 hrs US/Pacific
Bugs fixed:
5854190


--------------------------------------------------------------------------------

OPatch succeeded.

And now i am ready to patch(5868695) RDBMS OH and here are my commands
export ORACLE_HOME=/u01/OID
export PATH=$ORACLE_HOME/bin:$ORACLE_HOME/OPATCH:$PATH:.

$ opatch lsinventory

Oracle Interim Patch Installer version 1.0.0.0.52
Copyright (c) 2005 Oracle Corporation. All Rights Reserved..

We recommend you refer to the OPatch documentation under
OPatch/docs for usage reference. We also recommend using
the latest OPatch version. For the latest OPatch version
and other support related issues, please refer to document
293369.1 which is viewable from metalink.oracle.com

Oracle Home = /u01/OID
Location of Oracle Universal Installer components = /u01/OID/oui
Location of OraInstaller.jar = "/u01/OID/oui/jlib"
Oracle Universal Installer shared library = /u01/OID/oui/lib/hpunix/liboraInstaller.sl
Location of Oracle Inventory Pointer = /var/opt/oracle/oraInst.loc
Location of Oracle Inventory = /u01/OID/inventory
Path to Java = /u01/OID/jre/1.4.2/bin/java
Log file = /u01/OID/.patch_storage//*.log

Creating log file "/u01/OID/.patch_storage/LsInventory__12-12-2007_18-37-55.log"

Result:

Error occurred during initialization of VM
Unable to load native library: permission denied.

Please let me know as i am stuck with this.

Regards