Error while creating Adapter service for DB2 database

Wm version is 8.0
I have configured a jdbc connection to DB2 database and and enabled it successfully.

But when trying to create a slect or insert or any other adapter service its failing, hence the adapter service is not getting created at all
the error with which which its failing is below.
java.lang.NullPointerException
at com.webmethods.developer.adapter.metadata.AdapterMetadataParameterValue.confirmEachIndexMapEntryValueInternal(AdapterMetadataParameterValue.java:3200)
at com.webmethods.developer.adapter.metadata.AdapterMetadataParameterValue.confirmValueInternal(AdapterMetadataParameterValue.java:3298)
at com.webmethods.developer.adapter.metadata.AdapterMetadataParameterValue.confirmValue(AdapterMetadataParameterValue.java:2880)
at com.webmethods.developer.adapter.metadata.AdapterMetadata.confirmAll(AdapterMetadata.java:2098)
at com.webmethods.developer.adapter.metadata.AdapterMetadata.fixIndexMapSizes(AdapterMetadata.java:2703)
at com.webmethods.developer.adapter.metadata.AdapterMetadata.validateInternal(AdapterMetadata.java:525)
at com.webmethods.developer.adapter.metadata.AdapterService.(AdapterService.java:213)
at com.webmethods.developer.adapter.metadata.AdapterMetadataLoader.getNewAdapterService(AdapterMetadataLoader.java:1589)
at com.webmethods.developer.adapter.metadata.AdapterMetadataLoader.createAdapterService(AdapterMetadataLoader.java:235)
at com.webmethods.developer.adapter.wizard.NewAdapterServiceFinishAction$AdapterServiceBuilderThread.runSelf(NewAdapterServiceFinishAction.java:130)
at com.webmethods.caffeine.utils.ProgressDialogThread.run(ProgressDialogThread.java:57)

I am able to create only customsql adapter service with that same connection.

Some one please help in resolving this.

thanks
Sid

some one please help