ORA-28544
        connect 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 program.
        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 (HS=).
        
     
    
    
        ORA-28544
        connect 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 program.
        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 sevice 'extproc_connection_data' does NOT contain (HS=), or that the service definition used by a Heterogeneous Services database link DOES contain (HS=).
        
     
    
    
        ORA-28544
        connect 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 program.
        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 sevice 'extproc_connection_data' does NOT contain (HS=), or that the service definition used by a Heterogeneous Services database link DOES contain (HS=).