It looks like it is going scheduled to run every hour 12 ,13 ...
You can verify by reviewing the logs.
I was cross checking the Vcenter Extractor log file but I don't see anywhere talking about schedule.
Also I have one more question :-
So, using same VMware Vcenter Exractor Service I can configure the remaining Vcenter in BMC TSCO Console, correct ?
the "VMware - vCenter Extractor Service" is a Service ETL (different from a Standard ETL). As a Service ETL, it will continuously pull data from the configured vCenter every 15 minutes, importing data every hour in TSCO (if you kept the standard configuration). You can see that a Service ETL is active when the status is on "SERVICE_ON" status. The "Schedule" column does not apply for Service ETL.
Regarding your second question, you need to configure one task for each VMware vCenter you want to integrate (1 vCenter -> 1 task). You can configure multiple "VMware vCenter Extractor Service" tasks running at the same time on your TSCO instance.
Please consider that the number of ETL tasks running at the same time should never be higher than the number of CPU of the ETL Engine Server where they are scheduled (use this as a simplified rule of thumb, please involve BMC support if you want to have a proper sizing).
I have three vcenter. So, I configured two on generic scheduler and one on Remote Scheduler. Vcenter which are configured on generic scheduler,Those data are getting properly populating inside its Domain on which they are mapped but Vcenter which is configured on Remote scheduler,Data are not popualting inside its Domain but are populating inisde New discovered system.
Need to understand what could be issue and remediation plan
You should open a ticket with support.