Trace file does not list detailed timings

My trace file does not contain details...i.e.

TABLE ACCESS BY INDEX ROWID OTAPA_REQUEST_QUEUE (cr=2 pr=0 pw=0 time=91 us)

Instead shows

TABLE ACCESS BY INDEX ROWID OTAPA_REQUEST_QUEUE What am I missing?

Jill Drocea
Oracle DBA
Verizon Wireless
845-365-7465
Jill.Drocea_at_verizonwireless.com

The information contained in this message and any attachment may be proprietary, confidential, and privileged or subject to the work product doctrine and thus protected from disclosure. If the reader of this message is not the intended recipient, or an employee or agent responsible for delivering this message to the intended recipient, you are hereby notified that any dissemination, distribution or copying of this communication is strictly prohibited. If you have received this communication in error, please notify me immediately by replying to this message and deleting it and all copies and backups thereof. Thank you.

--
http://www.freelists.org/webpage/oracle-l