Weekly issue with Jira not working in Jira server

[Puneet Varma]

Below is the information from my admin who is in charge of the server.

- No resource exhaustion. CPUs were almost completely idle (<1% utilization), approximately 2GB of RAM free, very little I/O (<1% utilization). 

- The catalina.out log contained no activity since 8:37. The atlassian log contained multiple java garbage collection failures. It’s not clear what these mean, as they seem to occur often during normal operation. An example: 

2018-08-29T08:55:49.092-0400: 1.515: [GC (Allocation Failure) [PSYoungGen: 98304K->12751K(114688K)] 98304K->12759K(376832K), 0.0182664 secs] [Times: user=0.03 sys=0.00, real=0.02 secs]

2018-08-29T08:55:49.587-0400: 2.009: [GC (Allocation Failure) [PSYoungGen: 111055K->15553K(212992K)] 111063K->15569K(475136K), 0.0222298 secs] [Times: user=0.02 sys=0.00, real=0.02 secs]

2018-08-29T08:55:50.040-0400: 2.462: [GC (Allocation Failure) [PSYoungGen: 212161K->16363K(212992K)] 212177K->18148K(475136K), 0.0209804 secs] [Times: user=0.03 sys=0.00, real=0.02 secs]

2018-08-29T08:55:50.405-0400: 2.827: [GC (Allocation Failure) [PSYoungGen: 212971K->16375K(245760K)] 214756K->20948K(507904K), 0.0303257 secs] [Times: user=0.06 sys=0.00, real=0.03 secs]

- The problem affected the jira application only. The database (MySQL) was operating normally, and did not require a restart. 

[Nic Brough -Adaptavist-]

It's sort of telling you it is running out of memory.  Start at https://confluence.atlassian.com/enterprise/garbage-collection-gc-tuning-guide-461504616.html to troubleshoot