RMAN restore command failed???

From: dba1 mcc <mccdba1_at_yahoo.com>
Date: Thu, 30 Jun 2011 07:18:52 -0700 (PDT)
Message-ID: <942364.89394.qm_at_web120514.mail.ne1.yahoo.com>

any one know why this restore command failed???

RMAN> restore controlfile from autobackup until time "to_data('06/28/11 01:11:00','mm/dd/yy hh24:mi:ss')";

Starting restore at 30-JUN-11
using channel ORA_DISK_1
using channel ORA_DISK_2

RMAN-00571: ===========================================================
RMAN-00569: =============== ERROR MESSAGE STACK FOLLOWS ===============
RMAN-00571: ===========================================================
RMAN-03002: failure of restore command at 06/30/2011 10:03:27 ORA-00907: missing right parenthesis
Received on Thu Jun 30 2011 - 09:18:52 CDT

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