APAR status
Closed as program error.
Error description
An IBM MQ Managed File Transfer protocol bridge agent is configured to connect to a file server using the SFTP protocol. When the protocol bridge agent processes a managed transfer request involving this file server, the managed transfer get stuck and no errors are reported in the protocol bridge agent's event log (output0.log). A trace collected at the time of the issue shows that the protocol bridge agent reports the following error at regular intervals: static c.i.w.b.session.sftp.SFTPConnection ----+----+----+----+ ! openSession, BFGBR0102E: Bridge agent could not locate and connect to protocol file server <file_server> [com.ibm.wmqfte.bridge.protocol.ProtocolException]
Local fix
Look to make sure the sftp server can be resolved and then look to restart the MFT Bridge Agent. If this does not work may need to run fteCleanAgent.
Problem summary
**************************************************************** USERS AFFECTED: This affects users of IBM MQ Managed File Transfer protocol bridge agents (PBAs) that connect to file servers using the SFTP protocol. Platforms affected: MultiPlatform **************************************************************** PROBLEM DESCRIPTION: The IBM MQ Managed File Transfer configuration file ProtocolBridgeProperties.xml contains the definitions of file servers that a protocol bridge agent can connect to. When a protocol bridge agent receives a managed transfer request to transfer files either to or from a file server, it will look up the definition of that file server in its ProtocolBridgeProperties.xml file and use the information to connect to it. If a protocol bridge agent: - Had been configured to connect to a file server using the SFTP protocol. - And was unable to resolve the IP address of the file server when it attempted to connect to it while processing a managed transfer. then the protocol bridge agent would go into a loop, continually trying to reconnect and failing. As a result, the managed transfer got stuck and could not proceed. When this happened, neither the source or destination agents for the managed transfer would write any errors or messages about that managed transfer to their event log (output0.log). A trace from the protocol bridge agent at the time when the issue occurred contained the following trace point: c.i.w.b.session.sftp.SFTPConnection ----+----+----+----+ ! openSession, BFGBR0102E: Bridge agent could not locate and connect to protocol file server <file_server> [com.ibm.wmqfte.bridge.protocol.ProtocolException]
Problem conclusion
In order to resolve this issue, IBM MQ Managed File Transfer protocol bridge agents have been modified so that if an attempt to connect to a file server using the SFTP protocol fails because the IP address of the file server could not be resolved, then the managed transfer will be marked as "Failed" with the following supplementary information: BFGBR0102E: Bridge agent could not locate and connect to protocol file server <file_server>" --------------------------------------------------------------- The fix is targeted for delivery in the following PTFs: Version Maintenance Level v9.1 LTS 9.1.0.8 v9.2 LTS 9.2.0.2 v9.x CD 9.2.2 The latest available 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
IT34978
Reported component name
IBM MQ BASE MP
Reported component ID
5724H7271
Reported release
910
Status
CLOSED PER
PE
NoPE
HIPER
NoHIPER
Special Attention
NoSpecatt / Xsystem
Submitted date
2020-11-18
Closed date
2020-11-30
Last modified date
2020-11-30
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
IBM MQ BASE MP
Fixed component ID
5724H7271
Applicable component levels
[{"Line of Business":{"code":"LOB45","label":"Automation"},"Business Unit":{"code":"BU053","label":"Cloud & Data Platform"},"Product":{"code":"SSYHRD","label":"IBM MQ"},"Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"910"}]
Document Information
Modified date:
01 December 2020