Hi Does anyone got some fixes for the below error other than rebuilding oraInventory In clone adcfgclone.pl dbTier log, the registration to central inventory failed . Beginning APPSDB_sgdev registration to central inventory... ORACLE_HOME NAME : APPSDB_sgdev ORACLE_HOME PATH : ...ora/10.2.0 Using Inventory location in /var/opt/oracle/oraInst.loc Log file located at ...ora/10.2.0/oraInventory/logs/OracleHomeCloner_01250610.log ERROR: Registration Failed... Please check log file. You can rerun this registration with the following script: .....ora/10.2.0/appsutil/out/sgdev_sophpadb08/regOUI_APPSDB_sgdev.sh Opatch lsinventory points to 9.2.0 products This was the error in inv registration : Registering local Oracle Home located at ......ora/10.2.0 to central oracle inventory RC-00126: Update inventory failed. (class: oracle/sysman/oii/oiii/OiiiInstallInventory, method: writeOneoffs signature: (ILjava/io/PrintWriter;Z)V) Incompatible object argument for function call Raised by oracle.apps.ad.clone.util.OracleHomeCloner I checked the regOUI_APPSDB_sgdev.sh and changed some class paths , when i ran script manually again i got Exception in thread "main" java.lang.NoClassDefFoundError at oracle.sysman.oii.oiic.OiicStandardInventorySession.endSession( OiicStandardInventorySession.java:356) at oracle.apps.ad.clone.util.OracleHomeCloner.registerOracleHome( OracleHomeCloner.java:314) at oracle.apps.ad.clone.util.OracleHomeCloner.registerOracleHome( OracleHomeCloner.java:165) at oracle.apps.ad.clone.util.OracleHomeCloner.main(OracleHomeCloner.java:1122) Registration failed OPATCH still points to 9.2.0 products :: Lsinventory Output file ( we have 10.2.0.3) Installed Top-level Products (2): Oracle 9iR2 Patchset 9.2.0.7.0 Oracle9i Database 9.2.0.1.0 There are 2 products installed in this Oracle Home. There are some hits in the metalink. eg - note 390599.1 But nothing has helped