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This article will explain in detail how to understand the timed task crontab, the content of the article is of high quality, so the editor will share it for you as a reference. I hope you will have some understanding of the relevant knowledge after reading this article.

Script directory:

[oracle@tangjian] $mkdir-p / u01/app/oracle/rman/scripts/

Archive directory:

[oracle@tangjian] $mkdir-p / u01/app/oracle/rman/arch/

Create script: (0 level increment once a month)

[oracle@tangjian ~] $vi / u01/app/oracle/rman/scripts/full_backup_run.sh

#! / bin/bash

# Usage:test database hot full backup!

Export PATH

Export ORACLE_BASE=/u01/app/oracle

Export ORACLE_HOME=$ORACLE_BASE/product/11.2.0/dbhome_1

Export ORACLE_SID=test

Export PATH=$PATH:$ORACLE_HOME/bin

DATE=$ (date +% Y%m%d)

Mkdir-p / u01/app/oracle/rman/$DATE

Rman target / & 1

View the task list:

[oracle@tangjian 20180730] $crontab-l

Create script: (1 level difference increment once a week)

[oracle@tangjian ~] $vi / u01/app/oracle/rman/scripts/level_backup_run.sh

#! / bin/bash

# Usage:test database hot full backup!

Export PATH

Export ORACLE_BASE=/u01/app/oracle

Export ORACLE_HOME=$ORACLE_BASE/product/11.2.0/dbhome_1

Export ORACLE_SID=test

Export PATH=$PATH:$HOME/bin:$ORACLE_HOME/bin

DATE=$ (date +% Y%m%d)

Mkdir-p / u01/app/oracle/rman/level/$DATE

Rman target / & 1

# rman backup level database shell

00 1 * * 7 / u01/app/oracle/rman/scripts/level_backup_run.sh 1 > / tmp/rman_backup_full.log 2 > & 1

Verify script availability:

[oracle@tangjian scripts] $sh full_backup_run.sh

[oracle@tangjian scripts] $sh level_backup_run.sh

Common commands:

/ sbin/service crond start start the service

/ sbin/service crond stop shuts down service

/ sbin/service crond restart restart the service

/ sbin/service crond reload reload configuration

Add (boot-up) at the end of the script / etc/rc.d/rc.local:

/ sbin/service crond start

Crontab-u sets a user's cron service. Generally, root users need this parameter when executing this command.

Crontab-l lists the details of a user's cron service

Crontab-r delete a user's cron service

Crontab-e edits a user's cron service

On how to understand the timed task crontab to share here, I hope the above content can be of some help to you, can learn more knowledge. If you think the article is good, you can share it for more people to see.

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