Troubleshooting
Problem
This document describes a reason why messages MCH0601 or MCH3601 for program f/QNFUNPACK are received when using SNADS.
Resolving The Problem
When receiving a corrupted network file (RCVNETF), message MCH0601 F/QNFUNPAK can occur. This is normally not an APAR condition; however, it is rather the operating system posting the error due to invalid fields within the network file when trying to receive the file. Often times, the file can be sent at a later time without errors. Typically this is an indication of file corruption on the delivery.
If this problem can be re-created, a comparison can be done to verify the corruption. You should do the following:
| 1. | Send the file to a local user ID on the local system. |
| 2. | Send the same file to the remote user ID. |
| 3. | On the source system, dump the object. On the operating system command line, type one of the following commands: DMPSYSOBJ OBJ('JOE SYSTEMA*') CONTEXT(QUSRSYS) or DMPSYSOBJ OBJ('JOEUSRIDSYSTEMA*') CONTEXT(QUSRSYS) where the object is the user ID and address that the file was sent to. Important Note: This must be in capital letters, and the user ID and system name must each consist of 8 characters. If the user ID is less than 8 characters, spaces must be added to make a length of 8. In addition, the last character of the system name must be an asterisk (*). The Context parameter is QUSRSYS. Press the Enter key. - - - - - - - An example running this on a system called RCHASK11: DMPSYSOBJ OBJ('SNORD RCHASK*') CONTEXT(QUSRSYS) Dump output directed to spooled file 1, job 471299/SNORD/QPADEV000S created on system RCHASK60 on 10/17/11 12:37:37. |
| 4. | On the target system, dump the object as you did in Step 3; however, you should use the user ID and address of the target system: DMPSYSOBJ OBJ('JOE SYSTEMB*') CONTEXT(QUSRSYS) or DMPSYSOBJ OBJ('JOEUSRIDSYSTEMB*') CONTEXT(QUSRSYS) Press the Enter key. |
| 5. | Compare the two dumps. If they do not match, most likely there is a network problem leading to data corruption. |
[{"Product":{"code":"SWG60","label":"IBM i"},"Business Unit":{"code":"BU058","label":"IBM Infrastructure w\/TPS"},"Component":"Communications-SNA","Platform":[{"code":"PF012","label":"IBM i"}],"Version":"Version Independent","Edition":"","Line of Business":{"code":"LOB57","label":"Power"}}]
Historical Number
391018486
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Document Information
Modified date:
18 December 2019
UID
nas8N1015376