Are you sure? I had control file record copy as the offending function in my head - alas oracle doesn't run on Android yet - I'd look at whether a concurrent backup was happening, or email responses , mine, were worth the paper they were written on. Niall Litchfield On Jul 23, 2010 7:17 PM, "Taral Desai" <taral.desai@xxxxxxxxx> wrote: It's related to buffer cache operation such as quiesce operation , managing fast start IO target, parallel recovery operation , etc On Fri, Jul 23, 2010 at 12:41 PM, Gus Spier <gus.spier@xxxxxxxxx> wrote: > > It simply has to be a... -- Thanks & Regards, Taral Desai