Oracle-L: RE: ora-600 when analyzing IOT

From: Igor Neyman <ineyman_at_perceptron.com>
Date: Thu, 07 Aug 2003 10:14:27 -0800
Message-ID: <F001.005C97D5.20030807101427@fatcity.com>

Does it mean, that if I don't have overflow segment in my IOT, I don't have to "analyze table", just analyze PK?

Igor Neyman, OCP DBA
ineyman_at_perceptron.com

-----Original Message-----

Rick_Cale_at_teamhealth.com
Sent: Thursday, August 07, 2003 12:45 PM To: Multiple recipients of list ORACLE-L

Igor,

When you gather statistics on an IOT with the ANALYZE command, it will analyze the primary key and overflow segment so I would think this is all that is required by CBO. Hopefully others have more insight.

Rick

                      "Igor Neyman"

                      <ineyman_at_perceptr        To:

<ORACLE-L_at_fatcity.com>

                      on.com>                  cc:

<Rick_Cale_at_teamhealth.com>

                                               Subject:  RE: ora-600
when analyzing IOT                                            
                      08/07/2003 12:13

                      PM

Rick,

Thanks for prompt reply.
I tried it (deleting statistics before analyzing table) and it worked.

Any ideas, whether cost-based optimizer need statistics on IOT or having statistics on PK index of IOT would be enough?

Igor Neyman, OCP DBA
ineyman_at_perceptron.com

-----Original Message-----

Rick_Cale_at_teamhealth.com
Sent: Thursday, August 07, 2003 12:04 PM To: Multiple recipients of list ORACLE-L

According to MetaLink you need to delete statistics and re-analyze I do not know your database version but this is supposely fixed in 8.1.6

execute

dbms_stats.delete_table_stats('<owner>','IPN_MEASUREMENT');

analyze table ipn_measurement estimate statistics ;

HTH
Rick

                      "Igor Neyman"

                      <ineyman_at_perceptr        To:       Multiple
recipients of list ORACLE-L <ORACLE-L_at_fatcity.com>
                      on.com>                  cc:

                      Sent by:                 Subject:  ora-600 when
analyzing IOT
                      ml-errors_at_fatcity

                      .com





                      08/07/2003 12:44

                      PM

                      Please respond to

                      ORACLE-L

Ok, since my original message still hasn't arrived (sent couple hours ago), here it goes again (sorry, if you get duplicate).

First, sorry for asking this list before searching Metalink, but I don't have access to it right now.
So, here it is:

I'm getting:

ORA-00600: internal error code, arguments: [15163], [333], [17424], [16191], [], [], [], []

when analyzing one of the index-organized tables: "ANALYZE TABLE ipn_measurement ESTIMATE STATISTICS".

Now, similar statement analyzing other IOTs works fine.

Also, on the same table (ipn_measurement) analyze worked fine yesterday, and the table didn't grew too much since yesterday.

Any ideas?

Another question, do I really have to run "analyze table" on IOT for cost-based optimizer, or analyzing index would be enough:

"ANALYZE INDEX pk_ipn_measurement ESTIMATE STATISTICS"

because "analyze index" still runs with no errors.

Oracle version is 8.1.5.

Igor Neyman, OCP DBA
ineyman_at_perceptron.com

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Author: Igor Neyman
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