What does the master do if it enters DB_EVENT_REP_PERM_FAILED?

I want to know the bdb master's behavior when getting "DB_EVENT_REP_PERM_FAILED". Does it flush all pervious txns or only the one being committed?

I think the answer to your question is no. But I think it needs clarification.
You seem to be confusing or mixing the acknowledgment and heartbeat mechanisms.
The PERM_FAILED event is only sent when the ack policy is not met. If there
is no such event and the txn commits successfully, then that means the ack policy
was met. The heartbeat checks the state of the actual connection.
If the txn commits successfully, then the ack policy was met. If your policy is one
of those that requires the txn be on the client (such as ALL, ONE (in your case of a
2 site group), etc), then you know the txn is on the remote site when the commit
completes. If that site then goes down, then you may or may not have durability
on that site depending on your txn durability choices (i.e. did you set DB_TXN_NOSYNC).
If the master does not perform any other txns, then it will not get the PERM_FAILED
event, nor will it flush its data.
If the master commits a txn after the other site crashes, but before the heartbeat
expires to notice, then you should get a PERM_FAILED event because the client
will not ack the txn and the attempt to send the data will fail.
Sue LoVerso
Oracle

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