Re: Oracle invents time machine - optimizer now faster than light.

Don't lose any sleep on it, but here's another:

PARSING IN CURSOR #1 len=40 dep=0 uid=54 oct=1 lid=54 tim=1019495629370923 hv=1851325355 ad='6cb3450' alter table TESTLONG modify ( text clob) END OF STMT
PARSE
#1:c=10000,e=11122,p=1,cr=1,cu=0,mis=1,r=0,dep=0,og=4,tim=101949562937 0823

NB - not recursive, not SYS, and a hard parse to boot.

But this one is much more interesting:

PARSING IN CURSOR #1 len=68 dep=0 uid=54 oct=42 lid=54 tim=1019495629353714 hv=287842151 ad='6cba5e8' alter session set events '10046 trace name context forever, level 8' END OF STMT
EXEC
#1:c=0,e=13,p=0,cr=0,cu=0,mis=1,r=0,dep=0,og=4,tim=1019495629321662

Note the complete absence of PARSE #1, and the 'massive' 32,000 microsecond back-step.

In general, however, the PARSE seems to be a fairly persistent 110 micro seconds out of step.

Jonathan Lewis
http://www.jlcomp.demon.co.uk

Author of:
Practical Oracle 8i: Building Efficient Databases

Next Seminar - Australia - July/August
http://www.jlcomp.demon.co.uk/seminar.html

Host to The Co-Operative Oracle Users' FAQ http://www.jlcomp.demon.co.uk/faq/ind_faq.html

-----Original Message-----
To: Multiple recipients of list ORACLE-L <ORACLE-L_at_fatcity.com> Date: 23 April 2002 14:18
light.

|Do you have any more examples? and if so, is the
|second time always suffixed with '00'. I'm wondering
|if the concluding time is still centiseconds (or
|whatever precision is appropriate to cause the
|'problem')
|
|Cheers
|Connor
|

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