Question on 11g Manual Upgrade (Step #33)

Question

In the Note 837570.1 - Complete Checklist for Manual Upgrades to 11gR2 (Doc ID 837570.1), under Step #33
Step 33
Upgrade Statistics Tables Created by the DBMS_STATS Package
If you created statistics tables using the DBMS_STATS.CREATE_STAT_TABLE procedure, then upgrade these tables by executing the following procedure:
EXECUTE DBMS_STATS.UPGRADE_STAT_TABLE('SYS','dictstattab');
In the example, 'SYS' is the owner of the statistics table and 'dictstattab' is the name of the statistics table. Execute this procedure for each statistics table.
How do we know which tables were previously created with DBMS_STATS.CREATE_STAT_TABLE prior to upgrade?”
Thank you very much.

Answer 1

Hello and welcome to the forums.
The statistics tables created by DBMS_STATS, are used for exporting/importing statistics, these tables are not used by the optimizer. So if you are not planning to import statistics, you don't need to find (and update) these tables.
Anyway, stats tables have a basic table structure and can be found by the following query:
SELECT OWNER, TABLE_NAME FROM DBA_TAB_COLUMNS WHERE
COLUMN_NAME = 'STATID' AND DATA_TYPE= 'VARCHAR2' AND DATA_LENGTH=30Check if the listed tables have also these columns:
Name                                      Null?    Type                       
STATID                                             VARCHAR2(90)               
TYPE                                               CHAR(3)                    
VERSION                                            NUMBER                     
FLAGS                                              NUMBER                     
C1                                                 VARCHAR2(90)               
C2                                                 VARCHAR2(90)               
C3                                                 VARCHAR2(90)               
C4                                                 VARCHAR2(90)               
C5                                                 VARCHAR2(90)               
N1                                                 NUMBER                     
N2                                                 NUMBER                     
N3                                                 NUMBER                     
N4                                                 NUMBER                     
N5                                                 NUMBER                     
N6                                                 NUMBER                     
N7                                                 NUMBER                     
N8                                                 NUMBER                     
N9                                                 NUMBER                     
N10                                                NUMBER                     
N11                                                NUMBER                     
N12                                                NUMBER                     
D1                                                 DATE                       
R1                                                 RAW(32)                    
R2                                                 RAW(32)                    
CH1                                                VARCHAR2(3000)Regards
Gokhan Atil