update : 29-04-2017

DBA Script : dba_index_fragmentation.sql

-- | FILE : dba_index_fragmentation.sql |
-- +----------------------------------------------------------------------------+
-- | |
-- | |
-- | www.high-oracle.com |
-- |----------------------------------------------------------------------------|
-- | www.high-oracle.com |
-- |----------------------------------------------------------------------------|
-- | DATABASE : Oracle |
-- | FILE : dba_index_fragmentation.sql |
-- | CLASS : Database Administration |
-- | PURPOSE : To ascertain index fragmentation. As a rule of thumb if 10-15% |
-- | of the table data changes, then you should consider rebuilding |
-- | the index. |
-- | NOTE : As with any code, ensure to test this script in a development |
-- | environment before attempting to run it in production. |
-- +----------------------------------------------------------------------------+
SET ECHO OFF
SET FEEDBACK OFF
SET HEADING ON
SET LINESIZE 180
SET PAGESIZE 50000
SET TERMOUT ON
SET TIMING OFF
SET TRIMOUT ON
SET TRIMSPOOL ON
SET VERIFY OFF
CLEAR COLUMNS
CLEAR BREAKS
CLEAR COMPUTES
PROMPT
PROMPT +------------------------------------------------------------------------+
PROMPT | Calculate Index Fragmentation for a Specified Index |
PROMPT +------------------------------------------------------------------------+
PROMPT
ACCEPT index_name CHAR prompt 'Enter index name [SCHEMA].index_name : '
ANALYZE INDEX &index_name VALIDATE STRUCTURE;
COLUMN name HEADING 'Index Name' FORMAT a30
COLUMN del_lf_rows HEADING 'Deleted|Leaf Rows' FORMAT 999,999,999,999,999
COLUMN lf_rows_used HEADING 'Used|Leaf Rows' FORMAT 999,999,999,999,999
COLUMN ibadness HEADING '% Deleted|Leaf Rows' FORMAT 999.99999
SELECT
name
, del_lf_rows
, lf_rows - del_lf_rows lf_rows_used
, TO_CHAR( del_lf_rows /(DECODE(lf_rows,0,0.01,lf_rows))*100,'999.99999') ibadness
FROM index_stats
/
PROMPT
PROMPT Consider rebuilding any index if % of Deleted Leaf Rows is > 20%
PROMPT
UNDEFINE index_name
SET FEEDBACK 6

End Script

Oracle Database Error Messages



Oracle Database High Availability Any organization evaluating a database solution for enterprise data must also evaluate the High Availability (HA) capabilities of the database. Data is one of the most critical business assets of an organization. If this data is not available and/or not protected, companies may stand to lose millions of dollars in business downtime as well as negative publicity. Building a highly available data infrastructure is critical to the success of all organizations in today's fast moving economy.

Well, the reason for above error is that i have taken the above script from a 11g database and running it on 10g database. 11g has bring some changes in password management. Below code is executed on 11g and user created successfully, which is expected result.