Hi,
Although I never encountered that situation I would like to share the following scenario here.
The database is running in archivelog mode.
At time t1 my database is "hanging" and I cannot perform a logswitch anymore (ansd also not an archive log).
As a work-around, I perform a shutdown abort.
I put the database in noarchivelog mode and open it for normal usage.
I shut it down cleanly and open it in archivelog mode.
I then perform a logswitch.
I didn't clear the log group that was "haging".
Does this mean that the data contained in the redo logs are properly archived and that I can used it in case of recovery?
I do not think so because changing the archiving mode doe invalidate the archives previous the archiving mode.
Is that correct?
Thanks and Regards