Path: dp-news.maxwell.syr.edu!spool.maxwell.syr.edu!drn.maxwell.syr.edu!news.maxwell.syr.edu!newsfeed.icl.net!newsfeed00.sul.t-online.de!t-online.de!news-lei1.dfn.de!news1.uni-leipzig.de!fu-berlin.de!CARNet.hr!newsVIP.hr!not-for-mail From: "Goran" Newsgroups: comp.databases.oracle.server Subject: Re: need for multiple listeners? Date: Thu, 11 Nov 2004 16:17:38 +0100 Organization: VIP-NET Lines: 28 Message-ID: References: <10p526hhcs0fv91@corp.supernews.com> NNTP-Posting-Host: zw-gd.win.vipnet.hr X-Trace: fegnews.vip.hr 1100186258 28244 10.243.153.154 (11 Nov 2004 15:17:38 GMT) X-Complaints-To: abuse@vip.hr NNTP-Posting-Date: Thu, 11 Nov 2004 15:17:38 +0000 (UTC) X-Priority: 3 X-MSMail-Priority: Normal X-Newsreader: Microsoft Outlook Express 6.00.2900.2180 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.2180 X-RFC2646: Format=Flowed; Original Xref: dp-news.maxwell.syr.edu comp.databases.oracle.server:229108 "Phillip" wrote in message news:10p526hhcs0fv91@corp.supernews.com... > Hello, > > our environment has it where there are multiple versions of Oracle (8i and > 9i) databases residing on the same server. I was wondering if there was a > technical/functional *need* to have multiple listeners running, or will a > single listener do? I understand all the benefits of having multiple > listeners like how you can take one down without affecting the entire > node, > but what I was wondering is there an actual technical reason to have > multiple listeners as opposed to a single one? How are your environments > set up? > > -Phillip > We mostly use separate listeners in case of multiple instances on a single machine, each listening on it's own port. Sometimes very useful - for example to prevent users from connecting by stopping a listener; in HA cluster environment.. etc... Regards Goran