APAR status
Closed as program error.
Error description
While MQ MFT is sending a managed file transfer to a remote FTP server the FTP server returns an FTP Reply Code 425 - "Can't open data connection". The MFT protocol Bridge Agent attempts the STOR command again but but if both attempts fail it throws an IOException containing the string: "Accept timed out" and incorrectly marks the managed transfer as "Failed". The FTP reply 425 is a transient error so the correct behaviour would be to treat this condition as recoverable, and put the managed transfer into recovery so that it is re-queued it for processing at later time.
Local fix
Problem summary
**************************************************************** USERS AFFECTED: This issue affects users of WebSphere MQ Managed File Transfer v7.5 and V8 Protocol Bridge Agent who are communicating with an FTP(S) Server which fails to process a write request due to resource limitations. Platforms affected: MultiPlatform **************************************************************** PROBLEM DESCRIPTION: While MQ MFT is processing a file transfer request to a remote FTP(S) server it sends FTP STOR requests to write data to the remote file. If the FTP server cannot process the request and times out it returns FTP Reply Code 425 "Can't open data connection". The MFT protocol Bridge Agent attempts the STOR command twice but if both attempts fail it throws an IOException containing the string: "Accept timed out" and marks the managed transfer as "Failed". The Reply Code 425 is a transient error opening the data connection caused by a resource shortage so the correct behaviour would be to treat this condition as recoverable, and put the managed transfer into recovery.
Problem conclusion
The protocol bridge agent has been updated to handle the dropped connection / rejected request as a recoverable error and the file transfer is put into RECOVERY status so that it can be retried. --------------------------------------------------------------- The fix is targeted for delivery in the following PTFs: Version Maintenance Level v7.5 7.5.0.6 v8.0 8.0.0.5 The latest available FTE maintenance can be obtained from 'Fix List for WebSphere MQ File Transfer Edition 7.0' http://www-01.ibm.com/support/docview.wss?uid=swg27015313 The latest available MQ maintenance can be obtained from 'WebSphere MQ Recommended Fixes' http://www-1.ibm.com/support/docview.wss?rs=171&uid=swg27006037 If the maintenance level is not yet available information on its planned availability can be found in 'WebSphere MQ Planned Maintenance Release Dates' http://www-1.ibm.com/support/docview.wss?rs=171&uid=swg27006309 ---------------------------------------------------------------
Temporary fix
Comments
APAR Information
APAR number
IT11150
Reported component name
WMQ MFT
Reported component ID
5724H7242
Reported release
750
Status
CLOSED PER
PE
NoPE
HIPER
NoHIPER
Special Attention
NoSpecatt
Submitted date
2015-09-10
Closed date
2015-10-30
Last modified date
2015-10-30
APAR is sysrouted FROM one or more of the following:
APAR is sysrouted TO one or more of the following:
Fix information
Fixed component name
WMQ MFT
Fixed component ID
5724H7242
Applicable component levels
R750 PSY
UP
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Document Information
Modified date:
27 January 2022