Error while extending seeded vo, now cant get it back.

Question

1. I extended a seeded SSMonitorStatusVO and placed it in package : mac.oracle.apps.fnd.wf.monitor.server called as MySSMonitorStatusVO
2. added another column (description) in the query. Query runs fine in sql navigator.
3. added substitution in jpx ,
4. added a column in MonitorStatusPG.xml through personalization in the table,
view instance = parent vo (i. e. SSMonitorStatusVO) , view attribute = description
5. uploaded all the new files on server in $JAVA_TOP/mac/....
compiled VO.java file on server itself to make sure of version difference.
6. upload jpx using the script :
C:\Jdev6012619\jdevbin\jdev\bin\jpximport C:\Jdev6012619\jdevhome\jdev\myprojects\workflow.jpx -username apps -password aaaaa4 -dbconnection "(description = (address_list = (address = (protocol = tcp)(host = -------.com)(port = 1521)))(connect_data = (sid = MACH)))"
GIves me a msg :
Imported document : /oracle/apps/fnd/wf/monitor/server/customizations/site/0/SSMonitorStatusVO
Import completed successfully
7. Bounce Apache
When I revisit the OAF page : I get error :
oracle.apps.fnd.framework.OAException: Could not load application module 'oracle.apps.fnd.wf.monitor.server.MonitorStatusSSAM'. at oracle.apps.fnd.framework.webui.OAJSPApplicationRegistry.registerApplicationModule(OAJSPApplicationRegistry.java:279)
## Detail 0 ## JBO-30003: The application pool (sasas1.company.comMACH1521oracle.apps.fnd.wf.monitor.server.MonitorStatusSSAM) failed to checkout an application module due to the following exception: oracle.jbo.JboException: JBO-29000: Unexpected exception caught: java.lang.UnsupportedClassVersionError, msg=mac/oracle/apps/fnd/wf/monitor/server/MySSMonitorStatusVORowImpl (Unsupported major.minor version 49.0) at oracle.jbo.common.ampool.ApplicationPoolImpl.doCheckout(ApplicationPoolImpl.java:1619)
I deleted the extension using jdr_utils.deletedocument(p_document => '/oracle/apps/fnd/wf/monitor/server/customizations/site/0/SSMonitorStatusVO');
Also deleted the personalization , bounced apache again, but this page is giving me the same error.
please help me to get it working.
would be very grateful.

Answer 1

I have one more question regarding this :
when I go in functional administrator and enter the document path :
/oracle/apps/fnd/wf/monitor/server and select 'Go' button
I get this error :
## Detail 0 ##
java.lang.NullPointerException
     at oracle.adf.mds.repos.api.DocumentReader.getFirstChunk(DocumentReader.java:250)
     at oracle.adf.mds.repos.api.DBAccess.loadDocumentAsXML(DBAccess.java:1248)
     at oracle.adf.mds.adapters.DBAdapter.getElementData(DBAdapter.java:302)
     at oracle.adf.mds.internal.MetadataManagerBase.findElement(MetadataManagerBase.java:1244)
     at oracle.adf.mds.MElement.findElement(MElement.java:97)
     at oracle.apps.fnd.framework.personalization.webui.ApplnCatalogSearchCO.processFormRequest(ApplnCatalogSearchCO.java:173)
If there was nothing present in that folder table should return no rows, but why null pointer exception ?
Thanks