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ORA-28547: connection to server failed, probable Oracle Net
admin error
Cause:
A failure occurred during initialization of a network connection
from a client process to the Oracle server: The connection was
completed but a disconnect occurred while trying to perform
protocol-specific initialization, usually due to use of different
network protocols by opposite sides of the connection.
This usually is caused
by incorrect Oracle Net administrative setup for database links or
external procedure calls. The most frequent specific causes are:
-- The connection uses
a connect string which refers to a Heterogeneous Services agent
instead of an Oracle server.
-- The connection uses
a connect string which includes an (HS=) specification.
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Action:
Check Oracle Net administration in the following ways:
-- When using
TNSNAMES.ORA or an Oracle Names server, make sure that the client
connection to the ORACLE server uses the correct service name or
SID.
-- Check
LISTENER.ORA on the connection end point"s host machine to assure
that this service name or SID refers to the correct server.
-- Confirm in
TNSNAMES.ORA or the equivalent service definition that the connect
string does NOT contain (HS=).
