AutoSys Workload Automation

without tie- breaker   EP_ROLLOVER will  occur  or not ? and please explain about the significant of  tiebreaker, what happen if tie breaker is not present in dual mode scheduler and server environment.

High Availability in Dual Event Server Mode" section at the undermentioned URL:

Maintaining the Event Server - CA Workload Automation AE & Workload Control Center - CA Technologies Documentation

Cheers,

Chandru

Thank you for information,

In our environment , Dual server , dual scheduler is there , tie breaker is not there. once primary server is got shutdown, DB Rollover happened , but EP Rollover is not happened. and process is not running  at that moment in second sever , I made shadow  scheduler as primary by changing the Role designator in secondary server.why EP rollover didn't happened and jobs are not running?

Tie breaker hasn’t been for the EP since R11.

It is for dual database mode.

Steve C.

Thank you for information,

In our environment , Dual server , dual scheduler is there , tie breaker is not there. once primary server is got shutdown, DB Rollover happened , but EP Rollover is not happened. and process is not running  at that moment in second sever , I made shadow  scheduler as primary by changing the Role designator in secondary server.why EP rollover didn't happened and jobs are not running?

Hi Prashant,

Dual database and no tie-breaker? Is that even allowed? ☺ I’ve always remembered that tie-breaker is a must in (High Availability + Dual Server (HADS) mode. It makes sense that the EP_ROLLOVER didn’t happen, for it’s the tie-breaker that updates the databases about missing Schedulers. Think of the tie-breaker as a traffic cop

Cheers,

Chandru

sorry, tie breaker is there but it  is not running in our environment. so in this scenario  EP_ROLLOVER  will not happen rite?

Correct. Primary or Shadow scheduler won't failover without the the tiebreaker.

Thanks & Regards,

Chandru

CA Technologies

P.S: Sent from Android phone, please pardon any typos.

Tiebreaker is NOT for EP_ROLLOVER

Steve C.

Batch System Engineer

Batch Innovation Team

steven.carrobis@gm.com

T (313)553-1727|  C (770)502-5519

In dual server mode if neither the primary scheduler nor the tie-breaker scheduler has updated the event server in two consecutive poll intervals, the shadow scheduler shuts down.

Thanks & Regards,

Chandru

CA Technologies

P.S: Sent from Android phone, please pardon any typos.

Chandru is correct. The tie-breaker is a key component of a HADS deployment. HADS being:

HA High Availability Dual Scheduler

DS Dual (Event) Server - Event Server being the database

As Steve C. notes the tie-breaker is primarily for the DS portion of HADS.

A HADS configuration will not operate correctly 100% of the time without a tie-breaker installed and configured.