One Listener : two Databases in the same system : is it possible ?

Question

Hi,
I am trying to setup a single listener to listen to two Databases running in the same system. We are experimenting a Network Architecture & this is a part of our experiment to see what happens..( most of the documentation I have read point out that running two DBs on a sing le system isn't a good idea..).
One of the Databases is an Oracle Application Server Infrastructure Metadata Respository ( OraInfra ). The other database has been configured for use with Oracle Content Database ( OraContentDB ) .
The two databases are up & running successfully - however, the problem is with the listener. The two listener.ora files are as follows :-
# listener.ora Network Configuration File: C:\oracle\product\10.2.0\OraContentDB\network\admin\listener.ora
# Generated by Oracle configuration tools.
SID_LIST_LISTENER =
  (SID_LIST =
    (SID_DESC =
      (SID_NAME = PLSExtProc)
      (ORACLE_HOME = C:\oracle\product\10.2.0\OraContentDB)
      (PROGRAM = extproc)
LISTENER =
  (DESCRIPTION_LIST =
    (DESCRIPTION =
      (ADDRESS = (PROTOCOL = IPC)(KEY = EXTPROC1))
      (ADDRESS = (PROTOCOL = TCP)(HOST = 152.69.191.100)(PORT = 1522))
  )and
# listener.ora Network Configuration File: C:\OraInfra\network\admin\listener.ora
# Generated by Oracle configuration tools.
SID_LIST_LISTENER =
  (SID_LIST =
    (SID_DESC =
      (SID_NAME = PLSExtProc)
      (ORACLE_HOME = C:\OraInfra)
      (PROGRAM = extproc)
LISTENER =
  (DESCRIPTION_LIST =
    (DESCRIPTION =
      (ADDRESS_LIST =
        (ADDRESS = (PROTOCOL = TCP)(HOST = 152.69.191.100)(PORT = 1521))
        (ADDRESS = (PROTOCOL = TCP)(HOST = 152.69.191.100)(PORT = 1522))
      (ADDRESS_LIST =
        (ADDRESS = (PROTOCOL = IPC)(KEY = EXTPROC))
  )However, everytime I try to connect via SQLPLUS, I can only connect via the first Listener. If I try to connect via the second listener, I only get this error :-
SQL> connect scott/tiger@localhost:1522/CONTENTDB
ERROR:
ORA-12541: TNS:no listenerCan anyone shed some light on this ?
Thanks,
Sandeep

Answer 1

Hi,
Thanks to everyone for your time ! Yes, I now have an understanding of the architecture & I am trying to set up my listener...
Paul, I reconfigured my Listener.ora and started it :-
SID_LIST_LISTENER =
  (SID_LIST =
    (SID_DESC =
      (SID_NAME = PLSExtProc)
      (ORACLE_HOME = C:\OraInfra)
      (PROGRAM = extproc)
    (SID_DESC =
      (GLOBAL_DBNAME = ORAINFRA.idc.oracle.com)
      (ORACLE_HOME = C:\OraInfra)
      (SID_NAME = ORAINFRA)
    (SID_DESC =
      (GLOBAL_DBNAME = CONTENTDB.idc.oracle.com)
      (ORACLE_HOME = C:\oracle\product\10.2.0\OraContentDB)
      (SID_NAME = CONTENTDB)
LISTENER =
  (DESCRIPTION_LIST =
    (DESCRIPTION =
      (ADDRESS_LIST =
        (ADDRESS = (PROTOCOL = TCP)(HOST = 152.69.191.100)(PORT = 1521))
      (ADDRESS_LIST =
        (ADDRESS = (PROTOCOL = IPC)(KEY = EXTPROC))
  )I started the listener from the command line and this si what I see :-
C:\OraInfra\bin>c:\OraInfra\bin\lsnrctl
LSNRCTL for 32-bit Windows: Version 10.1.0.4.2 - Production on 16-AUG-2006 10:12
:38
Copyright (c) 1991, 2004, Oracle.  All rights reserved.
Welcome to LSNRCTL, type "help" for information.
LSNRCTL> start
Starting tnslsnr: please wait...
TNSLSNR for 32-bit Windows: Version 10.1.0.4.2 - Production
System parameter file is C:\OraInfra\network\admin\listener.ora
Log messages written to C:\OraInfra\network\log\listener.log
Listening on: (DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=152.69.191.100)(PORT=152
1)))
Listening on: (DESCRIPTION=(ADDRESS=(PROTOCOL=ipc)(PIPENAME=\\.\pipe\EXTPROCipc)
Connecting to (DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)(HOST=152.69.191.100)(PORT=152
1)))
STATUS of the LISTENER
Alias                     LISTENER
Version                   TNSLSNR for 32-bit Windows: Version 10.1.0.4.2 - Produ
ction
Start Date                16-AUG-2006 10:12:45
Uptime                    0 days 0 hr. 0 min. 2 sec
Trace Level               off
Security                  ON: Local OS Authentication
SNMP                      OFF
Listener Parameter File   C:\OraInfra\network\admin\listener.ora
Listener Log File         C:\OraInfra\network\log\listener.log
Listening Endpoints Summary...
  (DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=152.69.191.100)(PORT=1521)))
  (DESCRIPTION=(ADDRESS=(PROTOCOL=ipc)(PIPENAME=\\.\pipe\EXTPROCipc)))
Services Summary...
Service "CONTENTDB.idc.oracle.com" has 1 instance(s).
  Instance "CONTENTDB", status UNKNOWN, has 1 handler(s) for this service...
Service "ORAINFRA.idc.oracle.com" has 1 instance(s).
  Instance "ORAINFRA", status UNKNOWN, has 1 handler(s) for this service...
Service "PLSExtProc" has 1 instance(s).
  Instance "PLSExtProc", status UNKNOWN, has 1 handler(s) for this service...
The command completed successfully
LSNRCTL>It didn't look suspicious to me I had a peek at the Listener.Log :-
TNSLSNR for 32-bit Windows: Version 10.1.0.4.2 - Production on 16-AUG-2006 10:12:43
Copyright (c) 1991, 2004, Oracle.  All rights reserved.
System parameter file is C:\OraInfra\network\admin\listener.ora
Log messages written to C:\OraInfra\network\log\listener.log
Trace information written to C:\OraInfra\network\trace\listener.trc
Trace level is currently 0
Started with pid=3308
Listening on: (DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=152.69.191.100)(PORT=1521)))
Listening on: (DESCRIPTION=(ADDRESS=(PROTOCOL=ipc)(PIPENAME=\\.\pipe\EXTPROCipc)))
TIMESTAMP * CONNECT DATA [* PROTOCOL INFO] * EVENT [* SID] * RETURN CODE
16-AUG-2006 10:12:45 * (CONNECT_DATA=(CID=(PROGRAM=)(HOST=)(USER=balajsub))(COMMAND=status)(ARGUMENTS=64)(SERVICE=LISTENER)(VERSION=168821762)) * status * 0
16-AUG-2006 10:12:46 * service_died * 1183The message "service_died" looked fishy & I tried to conect :-
C:\OraInfra\bin>sqlplus /nolog
SQL*Plus: Release 10.1.0.4.2 - Production on Wed Aug 16 10:18:26 2006
Copyright (c) 1982, 2005, Oracle.  All rights reserved.
SQL> connect scott/[email protected]:1521/ORAINFRA.idc.oracle.com
SQL> Connected
SQL> connect scott/[email protected]:1521/CONTENTDB.idc.oracle.com
ERROR:
ORA-12537: TNS:connection closedI now understand that the Listener is trying to open a connection to the Database - but, I am not sure why the connection dies with with the ORA-12537 error. It looks like the error is somewhere deeper in the TNS Layer...
Can you throw some light on this as well ?
Regards,
Sandeep