SRX

I'm becoming slightly concerned that there may be an issue with our SRX3600.  This is the second time in about two weeks that it has rebooted on us.  We have it powed by a APC backup system (load is only at 26%), so I'm rather confident it's not losing power.  Is there anything I can look for in the logs to determine why the router keeps rebooting and/or crashing?

admin@wb1> show log messages | match reboot 
May  1 07:49:06  wb1 savecore: Reboot reason(s): 0x1: power cycle/failure
May  1 07:49:06  wb1 savecore: Reboot reason(s): 0x1: power cycle/failure
May 15 06:11:23  wb1 mgd[14282]: UI_REBOOT_EVENT: System rebooted by 'admin'
May 15 06:11:29  wb1 shutdown: reboot by admin:
May 15 06:14:45  wb1 eventd[907]: SYSTEM_SHUTDOWN: System reboot by admin at Sun May 15 06:11:23 2016: no message
May 19 00:33:56  wb1 savecore: Reboot reason(s): 0x1: power cycle/failure
May 19 00:33:56  wb1 savecore: Reboot reason(s): 0x1: power cycle/failure

Do you see any core dumps created? I would recommend you opening a case with JTAC to get this investigated.

I agree that you should open an offical JTAC case on this one.  Your logs indicate a core dump is generated.  This will generally indicate a software bug of some kind but the good news is the core dumps will generally help JTAC identify what happened.

If this was previously reported, they can let you know what version it is or will be fixed in and potentially provide a service release if this is not yet out.