marcelo Cortez <jmdc_marcelo@yahoo.com.ar> writes:
> the pg_statistics show too many lock table ( fron my
> app.) and all of them is in waiting state.
> the only way to go out from this situation is restart
> the cluster.
Surely a few query cancels would be sufficient.
> where is the way to investigate lock's table tree ?
The pg_locks view should tell you who's hogging the locks.
regards, tom lane