asynch descriptor resize wait event

Anyone know what is causing "asynch descriptor resize" wait events on
11gR2.( a test database which is mostly idle?
Linux RH 4 - 64bit
I can only find a limited amount of information on MOS and hardly
anything in the Internet.
 Hanging in SQLPLUS when querying dba_autotask_client which led me to
search for wait events.
April Sims
SELECT IOUG Contributing Editor
Oracle Database 11g – Underground Advice for Database Administrators
OCP 8i, 9i, 10g DBA
Southern Utah University

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