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Avoiding SAP JAVA hung situation in entire SAP landscape due to heap dump generation

Hi All,

Problem: java systems getting hanged due to heap dump generation  in the path /usr/sap/ resulting in service disruption. Even with the file system alerts, the generation( which happens very fast) and size of the dump file is so big(5GB-10 GB), before  BASIS team could act and move/delete the heap dump files the system does reaches the hung state(might sometime would require a restart as well).

Solution :

Create a separate mount point like  /usr/sap/dumps and point the dump generation in

that location rather than /usr/sap/<SID>. The size of the new file system could be 5-10 times the heap size(approx. 15-20 GB).


Question:

1.What parameters I need to tune?


2. How to get heap dump generated at will to see if the new heap dump files are getting generated in the new file system?


Regards,

Ashutosh




Former Member

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