TKPROF Elapsed Time Challenge – the Elapsed Time is Half of the Wait Event Time

(Charles Hooper) An interesting quirk was recently brought to my attention by Mich Talebzadeh. He generated a 10046 trace at level 8 for a session, executed some SQL statements, disabled the trace, and then processed the resulting trace file with TKPROF. His TKPROF output included the following:

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