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This product reached the end of support date on March 31, 2021.

too many open files

anil_perera2
Helper

I am seeing this error message after upgrading to patch (6.2.20.1008)

Is it related to ulimit?

+  Version 6.2.20.1008  built Thu Nov 17 19:56:27 UTC 2016
+ Platform: Linux 2.6.32-431.29.2.el6.x86_64, amd64 64bit
+ vm: Java HotSpot(TM) 64-Bit Server VM 1.7.0_80, Oracle Corporation, mixed mode
+ Timezone: Coordinated Universal Time
+ Sizing: Large
+ Available hardware: 123,193 MB physical memory, 16 CPU cores
2016-12-14 12:23:19 SEVERE [XMLMementoSerializer] Failed to create backup, aborting storage of file '/opt/dynatrace-6.2/server/conf/realtimemappingcenter.xml'.
2016-12-14 12:23:19 WARNING [RealtimeAnalysisMappingCenter] cannot write persistence file java.io.FileNotFoundException: /opt/dynatrace-6.2/server/conf/realtimemappingcenter.xml (Too many open files)
at java.io.FileInputStream.open(Native Method)
at java.io.FileInputStream.<init>(FileInputStream.java:146)
1 REPLY 1

peter_karlhuber
Dynatrace Pro
Dynatrace Pro

Hi Anil,

yes, your ulimit -n (resp. the value in /etc/security/limits.conf) is too small, please increase it for the dynatrace user. Best regards,

Peter