Hi,
The following initialization parameters became obsolete in release 8.1.6 and cannot be used in release 8.1.6 and higher:
ENT_DOMAIN_NAME
LM_PROCS
OPTIMIZER_SEARCH_LIMIT

The initialization parameter SERIALIZABLE=TRUE is no longer supported in release 8.1.6 and higher. This is not the same as "obsolete." The parameter still shows up as a valid parameter in the V$PARAMETER dynamic performance view in release 8.1.6 and higher.

Regards,
Rohit Nirkhe,Oracle/Apps DBA,OCP 8i