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On Thu, 30 Jan 2003, Gogala, Mladen wrote:
> Yeah! Put it in Oracle*Names.
Will it make a difference? Does a dispatcher really re-query Names every time it tries to make a connection? No caching of service addresses? You promise?
Off I go to convert my 300-instance organization to rely on a single point of failure and make a bunch more calls for every connect...
YEEHAW! Oh wait. Names can't handle multiple interface and or distinct allocation of certain clients to certain listeners/interfaces. Oh well, and I thought I was going to have an exciting weekend. Guess its back to that Rubik's cube.
-- Jeremiah Wilton http://www.speakeasy.net/~jwiltonReceived on Thu Jan 30 2003 - 10:10:17 CST
> > -----Original Message-----
> > From: Jeremiah Wilton [mailto:jwilton_at_speakeasy.net]
> > Sent: Thursday, January 30, 2003 7:49 AM
> > To: Multiple recipients of list ORACLE-L
> > Subject: Making dispatchers re-read tnsnames.ora?
> >
> >
> > Dispatchers and job queue processes read tnsnames.ora on process
> > startup in case they need to make an outound database link on behalf
> > of one of he sessions using that dispatcher.
> >
> > If you make a change to the tnsnames.ora, dispatchers and job queue
> > processes won't register it unless you restart them. For job queue
> > processes this is simple (alter syste set job_queue_processes = 0;
> > wait for jobs to complete, then set them back to the orig. value).
> >
> > For dispatchers, you have to "shutdown dispatcher" (alter system
> > shutdown 'Dnnn'). Then, to get it to restart, you have to run "alter
> > system set dispatchers = '<foobar>';" with the COMPLETE dispatcher
> > specification for the parameter index you eliminated the dispatcher
> > from.
> >
> > This is annoyingly complex. When using multiple interfaces, multiple
> > dispatcher parameter indexes and a variety of listener attributes
> > within the dispatcher parameters, it can be difficult to get it right.
> >
> > Also, you have to do the dispatchers ONE AT A TIME so you don't block
> > everyone out while you are waiting for the dispatchers to exit. TIME
> > CONSUMING!
> >
> > Is there a way to make the dispatcher just reread the tnsnames.ora
> > file without all this rigamaroll?
-- Please see the official ORACLE-L FAQ: http://www.orafaq.net -- Author: Jeremiah Wilton INET: jwilton_at_speakeasy.net Fat City Network Services -- 858-538-5051 http://www.fatcity.com San Diego, California -- Mailing list and web hosting services --------------------------------------------------------------------- To REMOVE yourself from this mailing list, send an E-Mail message to: ListGuru_at_fatcity.com (note EXACT spelling of 'ListGuru') and in the message BODY, include a line containing: UNSUB ORACLE-L (or the name of mailing list you want to be removed from). You may also send the HELP command for other information (like subscribing).