It is a common editor present in every unix flavor. It is pronounced as “Vee Eye” commonly called as visual editor.
Visual editor has three basic modes as follows.
1) Insert mode
a) append mode
b) open mode
c) replace mode
d) change mode
2) Command mode
3) Execution mode
1) Insert mode: In this mode VI editor accepts all input.To enter [...]
Monitoring database is one of the role Oracle database administrator has to fulfil. I have listed some of the basic and useful commands which are generally used in database administration. If you feel the list is incomplete, please suggest more Unix commands used by database adminstrators in day to day monitoring and administration.
1. To create [...]
Significance of Certification: Today with global slowdown in job market, experienced and persons with more grip in handling business operations are always preferred, however it is always good to have certification in a particular domain to quantify knowledge in that particular area up to certain level. Companies also prefer to hire person who has shown [...]
Job schedulers are used to run some job in user’s absenteeism. Cron and At are traditional unix job schedulers.
Cron can run scheduled jobs in a repetitive manner whereas At runs it once only one or after predefined interval.
Studying Cron:
Database files:
1. /var/spool/cron/crontabs : crontabs directory contains list of jobs in the form of file by [...]
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