Reasonable time for instance recovery in RAC

Hi,
We're running with Oracle RAC configuration. The configuration is 2 instances one active one passive and we simulate failure of the active instance under load of ~1500 transactions per second.
In our tests we're seeing that between failure time until 2nd passive instance is taking responsibility it might take more than 1 or 2 minutes.
The question is: Is this behavior is reasonable? Fine - what SLA we can expect in those scenarios? other scenarios?
Where can we read about this in details.
Thank you,
Moshe

user12187426 wrote:
Harish Kumar Kalra wrote:
SLA depends on your business requirement but wrt to recovery of the second instance, this looks reasonable based on 1500 active transactions and induced failure on first instance. Look at FAST_START_MTTR_TARGET parameter to tune this further.
Ta
I am not agree with this, 1500 transaction per second if you lost it in 2 mins that means 180000 transaction. If one transaction worth of $1 then you have loose $180000
and I don't think FAST_START_MTTR_TARGET, this will make checkpoint to occur more frequent hence make overall performance degrated
ThxYes, but if you're starting to calculate in that kind of numbers, then I'm wondering why they use an active/passive config.
Regards
FJFranken

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