> Not being able to issue new transactions *is* data loss --- how are you
> going to get the system out of that state?
Yes, but I also would prefer the server to say something as "The database is
full, please vacuum." - the same as when the hard disk is full and you try
to record something on it - it's not exactly data loss, just an incapability
to continue the job.
The thing is that a warning is issued only when you start the vacuum itself:
play=# VACUUM;
WARNING: some databases have not been vacuumed in 1613770184 transactions
HINT: Better vacuum them within 533713463 transactions, or you may have a
wraparound failure.
VACUUM
So, it's something like the chicken and the egg problem, you have to vacuum
in order to receive a message that you had to do it earlier, but sometimes
it's just too late. As it was in my case, I have just discovered that almost
all of my data is missing - not even a notice or a warning message to let me
know that the end of the world is approaching. :)
Regards,
Kouber Saparev