Why would db_flashback_retention_target be set to 0?

Anybody ever came across this before? This should be set to a retention time such as 24 hours..but I have ran into a machine that is set to 0, would this possibly mean to tell flashback to use as much space as possible...the flashback ASM diskgroup only has 1.8GB available in it. On another note, how much performance degredation would flashback database cause on a system that during high processing is switching redologs about 20 times an hour?..I know I need to resize them too.

Hi,
"DB_FLASHBACK_RETENTION_TARGET specifies the upper limit (in minutes) on how far back in time the database may be flashed back. How far back one can flashback a database depends on how much flashback data Oracle has kept in the flash recovery area."
So, i suppose that your FRA is large enough to store the whole 24 hours and that nothing would be erased until space is claimed.
Take a look here also:
http://download.oracle.com/docs/cd/B19306_01/backup.102/b14192/rpfbdb003.htm#BRBSC13993
"If the database needs to create a new flashback log and the flash recovery area is full or there is no disk space, then the oldest flashback log is reused instead."
But.. i'm not a guru, so i could be wrong.. :-)
Acr

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What is the name of your old Time Capsule? Did you change the name to the new one?
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Why would db_flashback_retention_target be set to 0?

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