search
HomeDatabaseOracleWhat is the job in oracle for?
What is the job in oracle for?May 03, 2024 am 12:01 AM
oracle

Jobs in Oracle are predefined tasks that are automatically executed at specified times, such as triggering operations, sending notifications, calling programs, and maintaining data. When creating a Job, you need to define the name, schedule, actions, and status, and use ENABLE or DISABLE to control the activity status. Job benefits include automating tasks, scheduling tasks, parallel processing, and monitoring and control through tools.

What is the job in oracle for?

Job in Oracle

What is a Job?

In Oracle database, a Job is a predefined task that is automatically executed at a specified date and time. It allows users to schedule and execute scheduled tasks in the background of the database.

Function of Job

Job performs various tasks, including:

  • Trigger operation: Execute SQL query , stored procedures or other database operations.
  • Send notifications: Send notifications via email or other mechanism.
  • Call an external program: Execute an external application or script.
  • Maintain data: Delete old data, perform data loading or other maintenance operations.

Structure of Job

Job is defined by the following components:

  • Name:Identifies the Job Unique name.
  • Scheduling: Specify when the Job will be executed.
  • Action: Define the tasks performed by the Job.
  • Status: Indicates whether the Job is active, suspended, or completed.

How to create a Job

You can use the following steps to create a Job in the Oracle database:

  1. Use CREATE JOB Statement defines Job.
  2. Use the SCHEDULE ON clause to specify the scheduling of the Job.
  3. Use the WHAT clause to define the action of the Job.
  4. Use the ENABLE or DISABLE clause to control whether the Job is active.

Example

The following is a job example that deletes old data at 1 am every day:

CREATE JOB delete_old_data
SCHEDULE ON EVERY DAY AT 01:00
WHAT DELETE FROM table_name
WHERE date_column < sysdate;

Advantages

Using Job has the following advantages:

  • Automated tasks: Job can automate tedious manual tasks, thereby saving time and improving efficiency.
  • Schedule a Job: Job allows you to schedule a task to run at a specific time, even if you are not present.
  • Parallel processing: Jobs can be executed in parallel to improve performance and handle high-volume tasks.
  • Monitoring and Control: You can monitor and control Jobs using Oracle Enterprise Manager or other tools to ensure they are running as expected.

The above is the detailed content of What is the job in oracle for?. For more information, please follow other related articles on the PHP Chinese website!

Statement
The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn
oracle怎么查询所有索引oracle怎么查询所有索引May 13, 2022 pm 05:23 PM

方法:1、利用“select*from user_indexes where table_name=表名”语句查询表中索引;2、利用“select*from all_indexes where table_name=表名”语句查询所有索引。

什么是oracle asm什么是oracle asmApr 18, 2022 pm 04:16 PM

oracle asm指的是“自动存储管理”,是一种卷管理器,可自动管理磁盘组并提供有效的数据冗余功能;它是做为单独的Oracle实例实施和部署。asm的优势:1、配置简单、可最大化推动数据库合并的存储资源利用;2、支持BIGFILE文件等。

oracle全角怎么转半角oracle全角怎么转半角May 13, 2022 pm 03:21 PM

在oracle中,可以利用“TO_SINGLE_BYTE(String)”将全角转换为半角;“TO_SINGLE_BYTE”函数可以将参数中所有多字节字符都替换为等价的单字节字符,只有当数据库字符集同时包含多字节和单字节字符的时候有效。

Oracle怎么查询端口号Oracle怎么查询端口号May 13, 2022 am 10:10 AM

在Oracle中,可利用lsnrctl命令查询端口号,该命令是Oracle的监听命令;在启动、关闭或重启oracle监听器之前可使用该命令检查oracle监听器的状态,语法为“lsnrctl status”,结果PORT后的内容就是端口号。

oracle怎么删除sequenceoracle怎么删除sequenceMay 13, 2022 pm 03:35 PM

在oracle中,可以利用“drop sequence sequence名”来删除sequence;sequence是自动增加数字序列的意思,也就是序列号,序列号自动增加不能重置,因此需要利用drop sequence语句来删除序列。

oracle怎么查询数据类型oracle怎么查询数据类型May 13, 2022 pm 04:19 PM

在oracle中,可以利用“select ... From all_tab_columns where table_name=upper('表名') AND owner=upper('数据库登录用户名');”语句查询数据库表的数据类型。

oracle查询怎么不区分大小写oracle查询怎么不区分大小写May 10, 2022 pm 05:45 PM

方法:1、利用“LOWER(字段值)”将字段转为小写,或者利用“UPPER(字段值)”将字段转为大写;2、利用“REGEXP_LIKE(字符串,正则表达式,'i')”,当参数设置为“i”时,说明进行匹配不区分大小写。

Oracle怎么修改sessionOracle怎么修改sessionMay 13, 2022 pm 05:06 PM

方法:1、利用“alter system set sessions=修改后的数值 scope=spfile”语句修改session参数;2、修改参数之后利用“shutdown immediate – startup”语句重启服务器即可生效。

See all articles

Hot AI Tools

Undresser.AI Undress

Undresser.AI Undress

AI-powered app for creating realistic nude photos

AI Clothes Remover

AI Clothes Remover

Online AI tool for removing clothes from photos.

Undress AI Tool

Undress AI Tool

Undress images for free

Clothoff.io

Clothoff.io

AI clothes remover

AI Hentai Generator

AI Hentai Generator

Generate AI Hentai for free.

Hot Article

R.E.P.O. Energy Crystals Explained and What They Do (Yellow Crystal)
3 weeks agoBy尊渡假赌尊渡假赌尊渡假赌
R.E.P.O. Best Graphic Settings
3 weeks agoBy尊渡假赌尊渡假赌尊渡假赌
R.E.P.O. How to Fix Audio if You Can't Hear Anyone
3 weeks agoBy尊渡假赌尊渡假赌尊渡假赌

Hot Tools

Dreamweaver CS6

Dreamweaver CS6

Visual web development tools

WebStorm Mac version

WebStorm Mac version

Useful JavaScript development tools

Zend Studio 13.0.1

Zend Studio 13.0.1

Powerful PHP integrated development environment

SAP NetWeaver Server Adapter for Eclipse

SAP NetWeaver Server Adapter for Eclipse

Integrate Eclipse with SAP NetWeaver application server.

Safe Exam Browser

Safe Exam Browser

Safe Exam Browser is a secure browser environment for taking online exams securely. This software turns any computer into a secure workstation. It controls access to any utility and prevents students from using unauthorized resources.