DSNL511I csect-name TCP/IP CONVERSATION FAILED TO LOCATION location-name IPADDR=ip-address PORT=port SOCKET=socket RETURN CODE=return-code REASON CODE=reason-code

Explanation

A TCP/IP socket call failed with the error condition identified by the return code and reason code.

csect-name
The name of the control section that issued the message.
location-name
The location name associated with the remote site.
ip-address
The IP address of the remote site.
port
The TCP/IP port used by the remote site.
socket
The TCP/IP socket call that returned the error.
return-code
The error condition reported by TCP/IP, as a decimal number. This code is issued by z/OS® UNIX System Services or z/OS Communications Server.

A 3448 return code condition is typically related to a TCP/IP DROP-related event, such as the result of a TCP/IP DROP command. Db2 also uses a TCP/IP DROP service for various cancel-related events, which might include the z/OS CANCEL command, the Db2 CANCEL THREAD command, or Db2 idle-thread timeout conditions.

reason-code
Further detail associated with the TCP/IP return code, as a hexadecimal number. This code is issued by z/OS UNIX System Services or z/OS Communications Server.
The following values together indicate a zero-length receive, which is considered a closed condition:
  • SOCKET=RECV
  • RETURN CODE=0
  • REASON CODE=00000000

System action

Communication on the conversation is discontinued.

Operator response

Notify the system programmer.

System programmer response

Use the information provided in the message to correct the problem.

User response

Notify the system programmer.

Problem determination

Determine the meaning of the return and reason codes issued by z/OS UNIX System Services or z/OS Communications Server.