We think our problem is load related - b/c we only encounter under productin load and more so on our busiest servers. After I installed the FP11, the problem was resolved. SQLSTATE=08003 So the communication problem (whatever it is) seems to manifest in the first exception - Communication problem - and this must hose up some of our connections so at that After I installed the FP11, the problem was resolved. have a peek at this web-site
If the connection is reset (by the peer) while a transaction IS NOT in progress, then this likely indicates a normal condition in which case the DSNL511I message is basically noise Diagnosing the problem A packet trace collected to an external writer with the filter PORTNUM=Db2ListenPort specified will show the TCP layer traffic involved. So you may want to check if there are other errors besides the communication errors. Our C# instansiates a DB2Connectin object and issues an open against it.
Feedback Was this article helpful? For my particular problem, it was actually the case that some UDB problems caused out-of-memory situation, and hence caused the communication failed. If you figure yours out, I would like to hear about it. (We have reviewed every mainframe/gateway/client setting known to humanity. As a result, the best approach is to apply the APAR solution to the system reporting the symptom, if DB2 11 for z/OS, and any DB2 11 for z/OS partner(s).
Inner Exception Type: IBM.Data.DB2.DB2Exception ;Inner Exception Message: ERROR  [IBM][CLI Driver] CLI0106E Connection is closed. Communication API being used: â€˜SOCKETS'. The indoubt thread should be automatically resolved as indicated by a DSNL415I message. . Watson Product Search Search None of the above, continue with my search PM37030: DSNL511I DSNLIENO TCP/IP CONVERSATION FAILED SOCKET=RECV RETURN CODE=1121 REASON CODE=00000000 z/os A fix is available Obtain the fix
Example: (the location, ipaddr and port will contain valid values, the message below is a sample only) DSNL511I DSNLIENO TCP/IP CONVERSATION FAILED TO LOCATION .... The sample code is provided on an "AS IS" basis. You got this one: 1121 0461 ECONNRESET Connection reset by peer. Resolution Reproduced the issue with Connect for ODBC 5.2 and 5.3 Defect DD00037949 was filed and the issue is no longer reproducible using builds of 5.2 and 5.3 dated after January
This will occur when there is no response to the KeepAlive packets sent on the connection. You will be required to sign in. Resolving the problem Determine what timeout value has been configured on the firewall. DB2 Database Forums on Bytes.
but here is a link for the DB2 v9/10 PTF that will suppress the message in a non-error condition. Occasionally, we have some type of connection problem that we have been unable to debug up to this point. Dsnl511i Return Code 1127 ERROR  [IBM][CLI Driver] SQL30081N A communication error has been detected. Socket=read Return Code=1121 Reason Code=74520442 Message DSNL405I and an unexpected entry in the Display Thread Indoubt command report.
Can anybody help in finding the cause of the problem. Error description DB2DDF DB2TCPIP defect pm37030 dpm37030 DSNL511I messages with RETURN CODE=1121 may be issued by DB2 when the socket is cancelled and there is no transaction in progress. See Trademarks or appropriate markings. Source eliminate the potential of a duplicate socket close condition.
But if these messages are repeatedly being generated for a variety of IP addresses, an intermediate firewall is probably terminating sessions that have not had any activity for a predefined period. ERROR  [IBM][CLI Driver] SQL30081N A communication error has been detected. United States English English IBMÂ® Site map IBM IBM Support Check here to start a new keyword search.
The IBM Data Server Driver for ODBC and CLI can be used to connect to DB2 for z/OS, IBM DB2 for IBM i, and DB2 Server for VM and VSE servers Distribution on physical media is not available in all countries. This utilization of Synchronous Receive operations (while in an active transaction) requires that DB2 also utilize TCP/IP "MsgConnTerm" exit support so DB2 can be made aware of connection termination events in The indoubt thread should be automatically resolved as indicated by a DSNL423I message. .
Note: Not all remote client systems that access a DB2 server using TCP/IP will cause this message DSNL511I to occur. This can be caused by clients that are no longer responsive (or no longer connected to the network). Hung inactive connection or DBAT, as observed in the Display Thread Inactive command report. . have a peek here SOCKET=CLOSE RETURN CODE=113 REASON CODE=0523011C The return code=113 and reason code=0523011C indicate a possible second close may be occuring after the socket is already closed.
Post your question and get tips & solutions from a community of 419,232 IT Pros & Developers. Communication protocol being used: 'TCP/IP'. Return Code 1127 is ETIMEDOUT. Cross reference information Segment Product Component Platform Version Edition Information Management DB2 for z/OS z/OS 7.0, 8.0, 9.0, 10.0 Enterprise Document information More support for: z/OS Communications Server All Software version:
We think our problem is load related - b/c we only encounter under productin load and more so on our busiest servers. Please tell us how we can make this article more useful. Web Scale Globally scale websites with innovative content management and infrastructure approaches Modernization UX and app modernization to powerfully navigate todays digital landscape Omni-Channel Engagement Content-focused web and mobile solution for Communic IBM Data Server Driver Package (DS Driver) This package contains drivers and libraries for various programming language environments.
It is possible for the messages to occur at a high rate on some systems. Location where the error was detected: '188.8.131.52'. No changes have fixed this problem for more than a month!) I am going to have -30081 etched on my grave... (We run DB2 Client on Windows V8 fp 11, DB2 In other words, the communication errors did not show the root cause, and actually it also spent me quite some time to identify the root cause problem.
Only those remote client systems that do not gracefully close the TCP/IP socket connection may cause this DSNL511I message to occur. Watson Product Search Search None of the above, continue with my search PI25682: DSNL511I DSNLIENO TCP/IP CONVERSATION FAILED SOCKET=CLOSE RETURN CODE=113 REASON CODE=0523011C z/os A fix is available Obtain the fix Communication function detecting the error: â€˜recv'. Jul 13 '06 #3 P: n/a cwahlmeier michelles wrote: I don't know if you ever resolved this, but we just had similar problem.
But repeated instances are likely associated with a firewall that silently discards packets for sessions that it has timed out for inactivity. Example of message: DSNL511I DSNLIENO TCP/IP CONVERSATION FAILED TO LOCATION (ipaddr) IPADDR=(ipaddr) PORT=(port) SOCKET=RECV RETURN CODE=1121 REASON CODE=00000000 ******************************************** Additional keywords and symptoms: DB2 DSNL511I MSGDSNL511I L511 ECONNRESET 1121 Local fix Generated Sun, 08 Jan 2017 15:58:19 GMT by s_hp87 (squid/3.5.23) The combination of these two enhancements leads to a condition where a DBAT may be incorrectly interrupted when it is not necessary and, as a result of this (unnecessary) interruption, then
Communic. Tim Reynolds Verizon Data Services Nov 12 '05 #2 P: n/a michelles I don't know if you ever resolved this, but we just had similar problem. Can anybody help in finding the cause of the problem. Alternatively, this can be set to the value ENABLE if the INTERVAL value on the TCPCONFIG statement in the TCPIP PROFILE is already shorter.