2. oracleadministrationtraining.vibranttechnologies.co.in
DBA Goals
• A proactive DBA reduces the number of
weekends and off-hours worked
• Setup some routines
• Review the database to see what is ‘normal’
• What are the growth patterns
• Number of users logged in
• The CPU and memory usage
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DBA Goals
• The disks ‘hit’ the most
• Check the alert.log for ora errors
• Check for trace files
• When you do these things regularly, you will
notice the abnormal more easily
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9. oracleadministrationtraining.vibranttechnologies.co.in
Environment Management
• Application User perspective
– Total number of Users
– Max concurrent Users
– Length of data loads
– Uptime requirement
– Must be available at……
• Manage to their requirements
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DBA Tasks
• Is it running……
• “ps –eaf | grep dbw” tests to see if the
database is up and running
• “ps –eaf | grep lsnrctl” tests if the listener is
running
• sqlplus user@<ORACLE_SID> or some user
Password *******
Tests if you can connect to the database
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Alert Log
• Alert.log
– Located in
/$ORACLE_BASE/admin/<SID>/diag/bdump
– It shows when the database was started
– When a log switch occurred
– Shows the non-default parameters from the
init.ora
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Alert Log
– Any ddl commands to change the structure of
the database
– Space allocation errors
– When trace files were created and where they
are located
– When the database was shutdown or started
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13. oracleadministrationtraining.vibranttechnologies.co.in
Trace Files
• When there are internal errors in a user
session or with a background
process, Oracle creates a trace file
• They are to help in debugging a problem
• Trace files, created by a background
process, will have the name of the
background process as part of the file name
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16. oracleadministrationtraining.vibranttechnologies.co.in
Where to Get More Information
Vibrant Group:
www.vibrantgroup.co.in
Vibrant Technologies & Computers
www.vibranttechnologies.co.in/technologies.vibrantgroup.co.
in
Vibrant HR Team
www.hr.vibrangroup.co.in
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