Mean time to recovery in Alert log
979633Dec 17 2012 — edited Dec 17 2012Hi Experts,
I found the following statement in alert log. my database version 11.2.0.2.0 - 64bit.
FAST_START_MTTR_TARGET 60 is set too low, using minimum achievable MTTR 61 instead- in my alertlog.
I found that Whenever you set fast_start_mttr_target to a nonzero value, and while MTTR advisory is ON, Oracle Corporation recommends that you disable (set to 0) the following parameters:
LOG_CHECKPOINT_TIMEOUT
LOG_CHECKPOINT_INTERVAL
FAST_START_IO_TARGET
The Values i found in my database.
fast_start_mttr_target integer 60
log_checkpoint_interval integer 100000
log_checkpoint_timeout integer 1200
fast_start_io_target integer 0
My question is shall i need to do perform any action, what i found in alert log. I read about the fast_start_mmtr_target according to my understanding
The fast_start_mttr_target defines the effective mean time to recovery (MTTR) target, expressed in seconds.
The default for fast_start_mttr_target is 300 seconds (5 Minutes). and maximum we can give 3600 ( 1 Hour).
Administrators specify a target (bounded) time to complete the cache recovery phase of recovery with the fast_start_mttr_target initialization parameter.
Please suggest your thoughts.
Thanks in Advance.