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

May 20, 2012 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: UPDATE TESTWRITES SET PADDING1 = RPAD('y',4000,'y') WHERE [...]