Error 27090 requesting async resources falling back to sync, expect performance degradation

Hello Everyone,

I've started experiencing slow in EXPDP and delay extended from 2 hrs to 10 hrs. I traced EXPDP and observed EXPDP is hanging for 8 hrs then doing something and finishing in another  hrs.

Alert log, traces, session details, AWR reports  ..all are shwoing either " CPU wait" or  "wait for unread message on broadcast channel"

I found ASM alert logs is started showing below error from the moment we started getting slow in EXPDP process.

Error 27090 requesting async resources falling back to sync, expect performance degradation.

if any of you have any idea please advice.

TIA