Rebuilding oracle database indexes – Paradyne OpenLane SLM 5.5 User Manual

Page 60

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7. OpenLane Maintenance

7-8

January

2002

7800-A2-GB32-00

Rebuilding Oracle Database Indexes

As records are added to and deleted from the database, indexes may become
fragmented and index trees may increase in height, slowing access to the
database.

The ol_rbldidx.sql script rebuilds indexes to maintain performance.

Indexes should be rebuilt weekly, or, if less frequently, as often as practicable.

Procedure

To rebuild the indexes of the database named OpenLane every Sunday morning
starting at 12:15 am on a Solaris system:

1. Move

/opt/pdn/OpenLane/data/sql/scripts/Oracle/

Maintenance/ol_rbldidx.sql

to the $ORACLE_HOME directory.

2. Create a shell script:

ORACLE_HOME=/opt/oracle;
export ORACLE_HOME;
ORACLE_SID=OLDB;
export ORACLE_SID;
/opt/oracle/product/8.1.6/bin/sqlplus
my_username/my_password @ol_rbldidx

For this example, presume the script is saved as:

/OL_Scripts/rebuild_ix

3. Create or a modify a crontab file with the entry:

15 0 * * sunday “/OL_Scripts/rebuild_ix“

For this example, presume the script is saved as:

/OL_Scripts/my_cronfile

4. Submit the crontab file to cron:

crontab /OL_Scripts/my_cronfile

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