ORA-12516: TNS:listener could not find available handler with matching
ORA-12516: TNS:listener could not find available handler with
matching protocol stack
None of the known and available service handlers for the given SERVICE_NAME
support the client's protocol stack: transport, session, and presentation
Check to make sure that the service handlers (e.g. dispatchers) for the
given SERVICE_NAME are registered with the listener, are accepting connections,
and that they are properly configured to support the desired protocols.
Contributed by: Preetham SP.
This page represents one page of many pages of notes I made whilst working
with Oracle 7 through to 10i. I now no longer work with Oracle databases,
but hope that these notes will continue to be of benefit to others.
About the author: Brian Cryer
is a dedicated software developer and webmaster. For his day job he develops websites and desktop applications as well as providing IT services. He moonlights as a technical author and consultant.