My ISP enabled JDK 1.6.0_01 now, but this did not solve the Problem.
This morning outage was between 05:47and 06:21 (CET) with many exceptions in GlassFish and application logs:
Application Server: Too many open files
Email-Scheduler: UnknownHostException: pop3.mydomain.de
Spider-Scheduler: UnknownHostException: www.somedomain.de
ISP Admin says:
1. UnknownHostException could occur because name could not be found when too many files open
2. The Linux-System does not have any log messages, which means that OS has enough resources available
Conclusion must be that the problem depends to GlassFish or Java.
There must be an limitation for open files inside GlassFish or Java.
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