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Rebuild Indexes

Rebuild Indexes

2004-02-13       - By Juan Miranda

Reply:     1     2     3     4     5     6     7     8     9     10     >>  


Hi

Try this.
This do not use a cursor so you can stop it when you what.
Take care in production because VALIDATE STRUCTURE do some tipe of lock.


++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
-- Juan Miranda Serm�tica   06/AGO/2002
-- Utiliza VALIDATE STRUCTURE - > OJO en producci�n. Puede generar errores
ORA-00054 (See ORA-00054.ora-code.com).
-- OJO nolog - > NO usar con stand by


set serveroutput on size 1000000
set pagesize 0
set feedback off
set echo off
set trimspool on

spool c:\reb_index1.sql

DECLARE
dbname varchar2(20);
wday varchar2(11);
BEGIN
dbms_output.put_line( 'set echo off ');
dbms_output.put_line( 'set feedback off ');
dbms_output.put_line( 'set head off ');

dbms_output.put_line( 'spool c:\reb_index2.sql ');
dbms_output.put_line( 'prompt set feedback on ');
dbms_output.put_line( 'prompt set echo on ');
dbms_output.put_line( 'prompt spool c:\reb_index2.log ');

FOR t IN (select owner, index_name from dba_indexes where owner not in
( 'SYS ', 'SYSTEM ') order by owner,index_name) LOOP

dbms_output.put_line( 'prompt --Analizando
'||t.owner|| '. '||t.index_name);

dbms_output.put_line( 'Analyze index '||t.owner|| '. '||t.index_name|| '
validate structure; ');

dbms_output.put_line( 'select ' || ' ' ' ' || 'Alter index ' || t.owner ||
'. ' || t.index_name || ' rebuild online; ' || ' ' ' '|| ' from index_stats where
(height > 2) or
(10 <=decode(lf_rows_len,0,NULL,((del_lf_rows_len/lf_rows_len)*100))); ');

END LOOP;

dbms_output.put_line( 'prompt spool off ');
dbms_output.put_line( 'spool off ');
dbms_output.put_line( '@(protected):\reb_index2.sql ');

END;
/
spool off

@(protected):\reb_index1.sql

++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++




-- --Mensaje original-- --
De: oracle-l-bounce@(protected) [mailto:oracle-l-bounce@(protected)] En
nombre de vidya kalyanaraman
Enviado el: viernes, 13 de febrero de 2004 9:46
Para: oracle-l@(protected)
Asunto: Rebuild Indexes

Hi
It may be a silly thing to ask, but I am stuck right now.
I have been given a task to find out the indexes which need to be
rebuilt. There are around 3000 Indexes. I know I can run the following
command
"analyze index <Index > VALIDATE STRUCTURE "

for a single index and then find the rows from index_state based on
del_lf_rows_len/lf_rows_len > 20%.
Does anyone have a script for dynamically finding out the indexes that
are the candidates for rebuilding? How do you normally handle
situations like this?

TIA
Vidya





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