"Alaa El Gohary" <alaaelgohary(at)bftech(dot)com(dot)eg> writes: > this message appears when trying to open an application > Fatal:could not open file"/usr/local/pgsql/data/global/1262":too many open > files in system Try reducing max_files_per_process. Your kernel is evidently promising more than it can deliver about how many files each process can open. regards, tom lane