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тАО11-09-2000 11:09 AM
тАО11-09-2000 11:09 AM
dual listeners
thx
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тАО11-09-2000 12:54 PM
тАО11-09-2000 12:54 PM
Re: dual listeners
For Oracle, the different database listeners are defined in the listener.ora file, EACH WITH IT'S OWN PORT. For example: abd01 is port 1522, and efg01 is port 1523.
You want to avoid using port 1521. Leave this for the default listener.
Hope this helps.
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тАО11-09-2000 12:57 PM
тАО11-09-2000 12:57 PM
Re: dual listeners
We have 5 running on a V class without issue.
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тАО11-10-2000 01:30 AM
тАО11-10-2000 01:30 AM
Re: dual listeners
One listener can listen for requests for more then one database.
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тАО11-10-2000 01:43 AM
тАО11-10-2000 01:43 AM
Re: dual listeners
Example of listener.ora
LISTENER =
(ADDRESS_LIST =
(ADDRESS= (PROTOCOL= IPC)(KEY= my_openview.aaa.com))
(ADDRESS= (PROTOCOL= IPC)(KEY= openview))
(ADDRESS= (PROTOCOL= IPC)(KEY= my_test.aaa.com))
(ADDRESS= (PROTOCOL= IPC)(KEY= test))
(ADDRESS= (PROTOCOL= TCP)(Host= my)(Port= 1527)
(COMMUNITY = TCP.aaa.com))
)
SID_LIST_LISTENER =
(SID_LIST =
(SID_DESC =
(GLOBAL_DBNAME= my_openview.aaa.com)
(ORACLE_HOME= /app/oracle/product/7.3.4)
(SID_NAME = openview)
(PRESPAWN_MAX = 0)
)
(SID_DESC =
(GLOBAL_DBNAME= my_test.aaa.com)
(ORACLE_HOME= /app/oracle/product/7.3.4)
(SID_NAME = test)
(PRESPAWN_MAX = 0)
)
)
STARTUP_WAIT_TIME_LISTENER = 0
CONNECT_TIMEOUT_LISTENER = 10
TRACE_LEVEL_LISTENER = OFF
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тАО11-16-2000 08:07 AM
тАО11-16-2000 08:07 AM
Re: dual listeners
Note that it is a good idea to instantiate a listener for each version of the database that you are running.
IE: we have 4 Instances of 7.3.4, and two of 8.1.5, so we are running two listeners (LISTENER and LISTENER8).
The oracleSID will determine which listener we can work with.
If we use a 7.3.4 environ, then lsnrctl will start with the LISTENER set as current.
If we want to modify the LISTENER8, then first, change the SID to one of the 8.1.5 DB's, then start lsnrctl. Use the command "set current_listener LISTENER8" to change the current listener, then you can issue the normal commands, like start, status, etc.
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тАО11-16-2000 08:12 AM
тАО11-16-2000 08:12 AM
Re: dual listeners
No real need to multiple listeners unless:
Using more than one version on same server
Very heavy user load.
Ie: we use 4x 7.3.4 Instances, and 2x 8.1.5
There are two listeners (LISTENER and LISTENER8). To start/modify LISTENER, change the OracleSID to one of the 7.3.4 instances, and run lsnrctl. This will start the ctl program with LISTENER set as the current listener.
To modify LISTENER8, change SID to one of the 8.1.5 instances, run lsnrctl then the following command:
set current_listener LISTENER8
This will allow you to start/stop/status the other listener.