thanx for your tip.
Think i have to try this if we do not find the problem.
But would prefere first to find, what is the reason for this spike of open files between this special time range.
Its absolutly unlocigal for me, cause statistical traffic spike is between 19:00 and 20:00 and at this time no exceptions occur.
And also unclear why we see this messages only in GlassFish logs and applications which sends http request or get mail from pop3.
ISP did not find something on OS level.
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