Operating FMT FIN processing

To operate the FMT FIN processing, a user with the DnfFmtOperator role issues, to the service DNF_PF_CMD, the commands described in Table 1.
Table 1. FMT FIN operation tasks
Operation task Command
Enable an LT to send FMT FIN messages fmtenable
Start the sending and receiving of FMT FIN messages by an LT fmtstart
Display information about FIN messages processed by the FMT FIN service query
Recover FIN messages that were processed by the FMT FIN service but that failed to be routed to their destinations recover
Stop the sending and receiving of FMT FIN messages by an LT fmtstop
Disable an LT from sending FMT FIN messages fmtdisable
Reset the input or output sequence counter of an LT to a particular value, stop FMT FIN processing for that LT
Note: To prevent DB2® insertion errors, before you reset the input or output sequence counter of an LT it is imperative that:
  • The DNF_IAMS table is empty
  • The DNF_OAMS table contains no messages that are in process
  • The DNF_MSGS table is empty
To achieve this:
  1. Stop all traffic (both SIPN FIN and FMT FIN) to and from the LT.
  2. Wait until the LT finishes processing all FIN messages. To check this, periodically issue the query command with the query option m to the DNF_ILC_CMD service. For example, the response to the following command indicates that no OAMS messages are in process, but that the IAMS still contains 2 messages, and therefore is not yet empty: 
    INST1.BANKA.DNF_ILC_CMD>query -lt XXXXUSNYA -qo m

DNFH3555I Outbound messages in OAMS for LT 'XXXXUSNYA':
APC: queued= 0, in process= 0, acknowledged= 0 
FIN: queued= 0, in process= 0, acknowledged= 2 
Inbound messages in IAMS for LT 'XXXXUSNYA': 2
  3. After the IAMS is empty and the OAMS contains no in-process messages, delete the contents of the DNF_MSGS table manually.
 fmtreset
Table 2 and Table 3 describe how the contents of a message, the FMT FIN configuration, and the FMT FIN operation commands issued for an LT determine how the message is processed.
Table 2. FMT FIN messages submitted to the FMT FIN service (DNF_PF_IS)
The LT is... FMT FIN traffic for the LT is... The message is...
enabled started sent immediately via FMT FIN
stopped held in the OAMS, and sent via FMT FIN when FMT FIN traffic for the LT is restarted
disabled started held in the OAMS, and sent via FMT FIN when the LT is enabled
stopped held in the OAMS, and sent via FMT FIN when the LT is enabled and FMT FIN traffic for the LT is restarted
Table 3. FMT FIN messages submitted to the SIPN FIN service (DNF_ILC_FIN)
The LT is... FMT FIN traffic for the LT is... Message type and FIN service name1... FMT mode2 is... The message is...
enabled started match the configuration forced sent immediately via FMT FIN
not forced sent immediately via FMT FIN
do not match the configuration forced sent immediately via FMT FIN
not forced sent via SIPN FIN3
stopped match the configuration forced held in the OAMS; sent via FMT FIN when FMT FIN traffic for the LT is restarted
not forced held in the OAMS; sent via FMT FIN when FMT FIN traffic for the LT is restarted
do not match the configuration forced held in the OAMS; sent via FMT FIN when FMT FIN traffic for the LT is restarted
not forced sent via SIPN FIN3
disabled started match the configuration forced held in the OAMS; sent via FMT FIN when the LT is enabled
not forced sent via SIPN FIN3
do not match the configuration forced held in the OAMS; sent via FMT FIN when the LT is enabled
not forced sent via SIPN FIN3
stopped match the configuration forced held in the OAMS; sent via FMT FIN when the LT is enabled and FMT FIN traffic for the LT is restarted
not forced sent via SIPN FIN3
do not match the configuration forced held in the OAMS; sent via FMT FIN when the LT is enabled and FMT FIN traffic for the LT is restarted
not forced sent via SIPN FIN3
Notes:
1
The message type and FIN service name of the message correspond to values configured for the receiving destination as described in Configuring destinations to which FMT FIN messages can be sent.
2
The sending application sets the FMT mode in the RFH2 header of the message. For more information, see FIN message transfer services.
3
The message is sent immediately after a session was established for the LT.