Question: I am getting the ORA-28544
error with a database link to MS access:
ORA-28544: connect to agent
failed, probable Net8 administration error
What is the solution fix for the ORA-28544 error?
Answer: The oerr utility shows this
for the ORA-28544 error:
to agent failed, probable Net8 administration error
Cause: Net8 reported a failure to make a
RSLV connection or a protocol mode error when the Oracle
server attempted to establish communication with a
Heterogeneous Services agent or an external procedure agent.
This usually is due to an administration error in setting up
Net8 service definitions in TNSNAMES.ORA or LISTENER.ORA: A
basic network connection is opened, but it connects to a
program which does not use the appropriate protocol. This
often is a sign that the connection goes to the wrong
Action: Check Net8
administration in the following ways:
-- When using
TNSNAMES.ORA or an Oracle Names server, make sure that the
connection from the ORACLE server uses the correct service
name or SID.
-- Check LISTENER.ORA on the agent's
host machine to assure that the service name or SID refers
to the correct agent executable in its (PROGRAM=...) clause.
-- Confirm in TNSNAMES.ORA or the equivalent
service definition that service 'extproc_connection_data'
does NOT contain (HS=), or that the service definition used
by a Heterogeneous Services database link DOES contain
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