Java Programming

Announcement

For appeals, questions and feedback about Oracle Forums, please email oracle-forums-moderators_us@oracle.com. Technical questions should be asked in the appropriate category. Thank you!

Heap dump generated with read-write permissions for Java process owner

977816Apr 14 2014 — edited Apr 15 2014

I have a question regarding the permissions set for generated heap dumps.

I have some Jetty servers running on Linux (Java 6 64 bit / Java 7 64 bit) with the following Java arguments:

-XX:+HeapDumpOnOutOfMemoryError

-XX:HeapDumpPath=/opt/apps/heapdump

When there is a out-of-memory exception a heap dump is automatically generated by the JVM. But it seems that the heap dump permisions are set to read-write for owner only (600).

When I create files then they have by default read-write for owner and group/all read access (644).

$ ls -l

total 795432

-rw------- 1 bamboop bamboo 811322265 Apr 14 09:18 java_pid337.hprof

-rw-r--r-- 1 bamboop bamboo 6 Apr 14 12:57 test

Here the umask set for the server running the Java processes

$ umask

0022

Regards

Walter

Locked Post

New comments cannot be posted to this locked post.

Locked on May 13 2014

Added on Apr 14 2014

4 comments

2,941 views