Triggering events for DBWR and LGWR processes  and does CKPT writes to all datafiles headers(modified or unmodified) with new SCN no when checkpoint occurs.

Hello everyone,
Requesting help to understand.
a) When is database writer process  triggered ?
b) When is log writer process triggered?
c) When is CKPT process invoked by oracle ?
d) Does CKPT process writes to all datafiles headers of datafiles that were modified as well as  unmodified with new SCN number or only the modified datafiles ?
Kindly clarify . Thanks in advance .
- Gaurav R
Message was edited by: GauravRajput

Hello everyone,
Requesting help to understand.
a) When is database writer process  triggered ?
b) When is log writer process triggered?
c) When is CKPT process invoked by oracle ?
d) Does CKPT process writes to all datafiles headers of datafiles that were modified as well as  unmodified with new SCN number or only the modified datafiles ?
Kindly clarify . Thanks in advance .
- Gaurav R
Message was edited by: GauravRajput

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