IDS Forum

Re: 1024 incomplete connections at this time.

Posted By: JACQUES RENAUT
Date: Tuesday, 26 June 2012, at 5:20 p.m.

In Response To: 1024 incomplete connections at this time. (Knox, Ernest)

Original post:

DS Version: 10.00.UC6
OS Level: Sun Microsystems Inc. SunOS 5.10

What's causing this issue and possible fix(es)?
...

Response:

Well that message is coming from the listener thread doing a comparison that is has (in you case) 1024 incoming connections it hasn't gotten to at that particular moment. So basically at the tci/ip layer there's 1024 or more, incoming connection requests queued up that the listener thread hasn't gotten to yet. I believe there is a $ONCONFIG parameter that you can configure that defaults to 1024 (it's MAX_INCOMPLETE_CONNECTIONS) that would control how many incomplete connections you would have before the message was reported. But in any case, if there was a problem with the engine that was some how keeping the listener thread from running, you could see the queue of incoming connection requests get longer then this MAX_INCOMPLETE_CONNECTIONS value...if not that then there isn't anything the engine can do to fix this. It's either a spike in incoming connection requests to the port the server is listening on for database connections that are valid connection requests, or it's invalid connection requests (non-database clients) queueing up connection requests to the database server that the server will need to attempt to process. So it's a warning that perhaps you should do some network sniffing to verify where these connection requests are coming from (port and ip wise) to ensure that they are indeed expected database server client machines. If they are, then it could indicate a server problem that, as I mentioned, would imply that the listener thread is either having a problem getting to run, or processing connection requests slowly which is causing the incoming queue of outstanding connections to get to be larger then this default value of 1024.

Jacques Renaut
IBM Informix Advanced Support
APD Team

Messages In This Thread

• 1024 incomplete connections at this time.
  Knox, Ernest -- Tuesday, 26 June 2012, at 5:01 p.m.
  • Re: 1024 incomplete connections at this time.
    JACQUES RENAUT -- Tuesday, 26 June 2012, at 5:20 p.m.
    • Re: 1024 incomplete connections at this time.
      JACQUES RENAUT -- Wednesday, 27 June 2012, at 11:58 a.m.

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