Initial commit

9781565922372

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Doc

    Name:    blokrows.sql

    This script lists how many rows are being stored per block

    for a selected table

#

ttitle 'Table Rows Per Block'

SELECT   SUBSTR(T.ROWID,1,8)  || '-' ||

             SUBSTR(T.ROWID,15,4)  BLOCK,

         COUNT(*)                              ROW_CNT

FROM     &TAB_NAME T

WHERE    ROWNUM  <  2000

GROUP BY SUBSTR(T.ROWID,1,8) || '-' || SUBSTR(T.ROWID,15,4);

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Doc

    Name:    Mark Gurry

    Author:  Mark Gurry

    This script lists columns that have the same name but

    different characteristics. They may cause problems

    when tables are joined on the columns or unexpected 

    results are returned. 

#

break on owner on column_name;

ttitle ' Columns with Inconsistent Data Lengths '

select owner, column_name

      , table_name||' '||data_type||'('||

      decode(data_type, 'NUMBER', data_precision, data_length)||')' "Characteristics"

  from all_tab_columns 

where  (column_name, owner)

   IN

  (select column_name, owner

     from all_tab_columns

    group by column_name, owner

    having min(decode(data_type, 'NUMBER', data_precision, data_length))

            < max(decode(data_type, 'NUMBER', data_precision, data_length)) )

  and  owner not in ('SYS', 'SYSTEM')

/

Doc

    Name:    datafile.sql

    Author:  Mark Gurry

    this script checks the locations of all datafiles for the selected database

    Remember to balance your disk I/O load across disks 

#

column value  format a40

column name   format a40

column member format a40

spool datafile.lis  

ttitle ' Checking Locations of Database Files' 

select value

  from v$parameter

 where name = 'log_archive_dest'

UNION

select name 

  from v$datafile 

UNION

select member      

  from v$logfile 

/

spool off