I've read the manual again and the maxium size you can specify is 696.
The volume has to be at least 697, which it is in your case.

From the reference manual:

size
     Specifies the size, in megabytes, of the recovery log extension. This
parameter is required. The specified size should be a multiple of 4 and at
least 1 MB less than the actual volume size of the volume  specified in the
volname parameter. For example, if the volume specified in the volname
parameter is 5MB, the entered value for the size parameter is 4.


Leo Humar
LCS Pty Ltd
lhumar AT vic.bigpond.net DOT au

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