Environment Open very slow

Question

Using 2.5.3.21 with .net (c#)
I create a new environment with a few databases. The first time I open the environment (before committing any transactions), it opens instantly. However as soon as I insert any data (even just one byte), it takes about 2 minutes to open.
I have the following line in my environment config:
_envConfig.RunRecovery = true;If I omit this setting the environment opens instantly.
I tried the following instead:
                _env = DatabaseEnvironment.Open(HomeDirPath, _envConfig);
                foreach (var trans in _env.Recover(0, true))
                    trans.Txn.Abort();
                _env.Checkpoint();This too, is fast, but the call to Recover seems to have no effect on uncomitted transactions and some of the databases entries open in a locked state...waiting for a commit/abort.
It seems unreasonable to wait 2 minutes to wait for pending transactions to abort, on transactions that have less than 1KB of data pending.
Any help is appreciated.

Answer 1

I discovered the problem. When you set Recover to true on environment open, whilst stepping through with the Visual Studio debugger, it takes almost two minutes to open the environment, whether or not you have uncommitted transactions. I just tried the exact code on the same enviroment by running without the debugger and in this case the enviroment opens instantly.
This is strange behaviour, which is most likely related to the BDB .net API (I'm guessing)
For now , I'll leave the question as unanswered.