PGA-22001
        remote host name is null.
        
        
        Cause
        TCP/IP protocol has returned "null" for the remote host name.
        Action
        Verify the remote host name via the pg4tcpmap tool and re-execute your PL/SQL statement. If the problem cannot be resolved, supported customers should contact Oracle Support Services.
        
     
    
    
        PGA-22001
        remote host name is null.
        
        
        Cause
        TCP/IP protocol has returned "null" for the remote host name.
        Action
        Verify the remote host name via the pg4tcpmap tool and re-execute your PL/SQL statement. If the problem cannot be resolved, supported customers should contact Oracle Support Services.
        
     
    
    
        PGA-22001
        remote host name is null.
        
        
        Cause
        TCP/IP protocol has returned "null" for the remote host name.
        Action
        Verify the remote host name via the pg4tcpmap tool and re-execute your PL/SQL statement. If the problem cannot be resolved, supported customers should contact Oracle Support Services.