kernel Resource Manager - Server manager console

Hi,

 What is kernel in computing world ?  In short, it connects software application to hardware ...

What is the purpose of the new functionality called 'Recycle Kernel' button?

There is a new button called Recycle Kernel that is used to begin recycling Call Object kernel processes on demand. The purpose of the recycling button is to allow administrators to gracefully shut down a process that appears to have problems.

The recycling option tries to avoid both of those issues. When a kernel process begins recycling, there will be no additional user sessions attached to it. However, the kernel is not stopped immediately, which allows the current users to complete their processing. When all users have completed their processing, then that kernel will be shut down.

Before KRM, kernel recycling was only available based on JDE.INI settings. The Call Object kernels could be recycled at a scheduled time. With the new KRM "Recycle Kernel" button, a selected kernel process can begin recycling on demand. Because RUNBATCH and subsystem processes cannot be recycled, the Recycle Kernel button is not available for these processes.

JDE.ini to schedule kernel recycling 

[RECYCLING]

krnlRecycleTimeOfDay= Sun:03:30  # start to recycle kernel processes every Sunday at 3:30 AM

krnlRecycleElapsedTime=

inactiveUserTimeout=6:00

timeToForcedExit= 12:00    # kernels forced to exit, if still running 12 hours after scheduled recycling time

Eg kernels in JDE : UBE, schedule, COK, security and etc...

Will it kill the zombie kernel (corrupted kernel due to memory leak, and etc) ? YES

If failure due to some reason, you may click the remove zombie button in the SMC..

Each kernels would show CPU %, memory , thread, database connections , jdecache and etc..you may find the detail in process detail page - SMC...