Page 97-Oracle Programming Tutorials: Learn Oracle Online-php.cn

Article Tags

All
web3.0
- Mysql Tutorial
- navicat
- SQL
- Redis
- phpMyAdmin
- Oracle
- MongoDB
- NoSQL database
- Memcached
- cloudera
- memcache
Backend Development
- Mysql Tutorial
- navicat
- SQL
- Redis
- phpMyAdmin
- Oracle
- MongoDB
- NoSQL database
- Memcached
- cloudera
- memcache
Web Front-end
- Mysql Tutorial
- navicat
- SQL
- Redis
- phpMyAdmin
- Oracle
- MongoDB
- NoSQL database
- Memcached
- cloudera
- memcache
Database
- Mysql Tutorial
- navicat
- SQL
- Redis
- phpMyAdmin
- Oracle
- MongoDB
- NoSQL database
- Memcached
- cloudera
- memcache
Operation and Maintenance
- Mysql Tutorial
- navicat
- SQL
- Redis
- phpMyAdmin
- Oracle
- MongoDB
- NoSQL database
- Memcached
- cloudera
- memcache
Development Tools
- Mysql Tutorial
- navicat
- SQL
- Redis
- phpMyAdmin
- Oracle
- MongoDB
- NoSQL database
- Memcached
- cloudera
- memcache
PHP Framework
- Mysql Tutorial
- navicat
- SQL
- Redis
- phpMyAdmin
- Oracle
- MongoDB
- NoSQL database
- Memcached
- cloudera
- memcache
Common Problem
- Mysql Tutorial
- navicat
- SQL
- Redis
- phpMyAdmin
- Oracle
- MongoDB
- NoSQL database
- Memcached
- cloudera
- memcache
Other
- Mysql Tutorial
- navicat
- SQL
- Redis
- phpMyAdmin
- Oracle
- MongoDB
- NoSQL database
- Memcached
- cloudera
- memcache
Tech
- Mysql Tutorial
- navicat
- SQL
- Redis
- phpMyAdmin
- Oracle
- MongoDB
- NoSQL database
- Memcached
- cloudera
- memcache
CMS Tutorial
- Mysql Tutorial
- navicat
- SQL
- Redis
- phpMyAdmin
- Oracle
- MongoDB
- NoSQL database
- Memcached
- cloudera
- memcache
Java
- Mysql Tutorial
- navicat
- SQL
- Redis
- phpMyAdmin
- Oracle
- MongoDB
- NoSQL database
- Memcached
- cloudera
- memcache
System Tutorial
- Mysql Tutorial
- navicat
- SQL
- Redis
- phpMyAdmin
- Oracle
- MongoDB
- NoSQL database
- Memcached
- cloudera
- memcache
Computer Tutorials
- Mysql Tutorial
- navicat
- SQL
- Redis
- phpMyAdmin
- Oracle
- MongoDB
- NoSQL database
- Memcached
- cloudera
- memcache
Hardware Tutorial
- Mysql Tutorial
- navicat
- SQL
- Redis
- phpMyAdmin
- Oracle
- MongoDB
- NoSQL database
- Memcached
- cloudera
- memcache
Mobile Tutorial
- Mysql Tutorial
- navicat
- SQL
- Redis
- phpMyAdmin
- Oracle
- MongoDB
- NoSQL database
- Memcached
- cloudera
- memcache
Software Tutorial
- Mysql Tutorial
- navicat
- SQL
- Redis
- phpMyAdmin
- Oracle
- MongoDB
- NoSQL database
- Memcached
- cloudera
- memcache
Mobile Game Tutorial
- Mysql Tutorial
- navicat
- SQL
- Redis
- phpMyAdmin
- Oracle
- MongoDB
- NoSQL database
- Memcached
- cloudera
- memcache

Home

Technical Articles

Database

Oracle

How to execute stored procedures in Oracle regularly

In enterprise-level applications, we cannot just rely on users to perform manual operations to achieve the desired functionality. Therefore, scheduled tasks are essential, which are especially useful for performing background processing and data loading. Oracle database provides stored procedures and scheduled tasks to simplify the work of developers and administrators. In this article, we will focus on the method of using Oracle scheduled tasks to execute stored procedures regularly. Oracle Scheduled Tasks Scheduled tasks in Oracle database can be created using the DBMS_SCHEDULER package. this

Apr 18, 2023 pm 02:09 PM

How to query column data in oracle

Oracle is a relational database management system whose most important function is to store and retrieve data. Good querying skills are key when working with databases, as tens of millions of rows of data need to be sifted out to find the information you need. This article will introduce how to query column data in Oracle database. 1. SELECT statement The SELECT statement is the most commonly used query statement in Oracle. Its basic format is as follows: SELECT column1, column2, ...FROM table_name; where

Apr 18, 2023 pm 02:09 PM

Let's talk about Oracle's commonly used query and judgment statements

Oracle query judgment Oracle is a widely used relational database system. It has efficient data storage and query capabilities and has become one of the indispensable tools in enterprise management. When using Oracle for data query, we need to filter the required data through judgment statements. In this article, we will introduce the relevant knowledge of Oracle queries and commonly used query judgment statements. 1. Basic query statement In Oracle, we use the SELECT statement for data query. Its basic form is as follows: SELECT co

Apr 18, 2023 pm 02:08 PM

What should I do if Oracle cannot find the file?

When using Oracle database, sometimes you will encounter the problem of file not being found. This situation may affect the normal use of the database, so it needs to be resolved in time. There are many reasons for this problem, and several possible causes and solutions will be introduced in detail below. 1. The file is deleted or moved. When using the Oracle database, if the database needs to use a certain file, but the file has been deleted or moved to another directory, Oracle will not be able to find the file and "File Not Found" will appear. mistake. Solution: When the database starts, you can

Apr 18, 2023 pm 02:08 PM

Let's talk about the definition of oracle out stored procedure

Oracle database is one of the most popular relational databases currently and has powerful stored procedure functions, among which the out parameter is a commonly used one. In this article, we will discuss the definition, usage and usage scenarios of Oracle out stored procedures. 1. The concept of out parameters. The out parameter is a parameter type in Oracle stored procedures. It can output the calculation results in the stored procedures or pass the value to the caller. Like other types of parameters, out parameters also need to be declared and

Apr 18, 2023 pm 02:08 PM

How to install oracle linux silently

Oracle Linux is an enterprise-level Linux operating system that is often used in server and cloud computing environments. For administrators, installing Oracle Linux is an essential step, and silent installation can improve installation efficiency and reduce misoperations. This article will introduce how to implement silent installation of Oracle Linux through Kickstart files. 1. Overview of Kickstart files Kickstart is an automated installation system that allows users to

Apr 18, 2023 pm 02:08 PM

How to implement paging query in Oracle stored procedure

In Oracle database, a stored procedure is a reusable block of SQL code that can be used to implement many complex data operations. Among them, paging query is a common requirement, such as displaying a paging data list in a web application, or displaying results in paging in a report. In this article, we will introduce how to implement paging queries in Oracle stored procedures and provide a simple sample code to help readers better understand and apply this technology. 1. Basic principles of paging queries In general SQL queries, we can use "SE

Apr 18, 2023 pm 02:08 PM

How to view Oracle users? A brief analysis of various methods

In the Oracle database, multiple users are created. How do we view all users in the current database? This article will introduce how to view Oracle users. 1. Query users To view existing users in Oracle, you can use the following script: ````sqlSELECT USERNAME FROM DBA_USERS;````This will return the usernames of all users. 2. Query the user table space. Users are allocated to table spaces in Oracle. We can use the following script to view the table space where the user is located.

Apr 18, 2023 am 09:07 AM

How to write stored procedures in Oracle

With the increase of enterprise requirements and system complexity, database stored procedures are receiving more and more attention. As a large-scale relational database, Oracle's stored procedures play an increasingly important role when processing massive amounts of data. So, how to write stored procedures in Oracle? 1. What is a stored procedure? A stored procedure is a set of SQL statements that are stored and executed in a database. Some specific tasks can be accomplished by executing the stored procedure. This has the following advantages: 1. Improves the execution efficiency of the database. 2. Simplifies the writing of SQL statements, reducing

Apr 18, 2023 am 09:07 AM

How to convert decimal to binary in oracle

In Oracle database, binary conversion is a common requirement. Binary conversion converts decimal numbers into binary strings for easier storage and processing. In this article, we will explain how to convert decimal numbers to binary strings in Oracle database. In Oracle database, there are two methods to convert decimal number to binary string. The first way is to use the TO_NUMBER function to convert the decimal number to a binary number and then use UTL_RAW.CAST_FROM_NU

Apr 18, 2023 am 09:07 AM

What to do if 12154 error occurs in oracle

Oracle is a popular relational database management system that is widely used in enterprise-level applications. However, you may encounter various errors during Oracle installation and use, such as 12154 error. Error 12154 usually indicates a problem with the Oracle client connecting to the database. Specifically, this error is usually caused by the following issues: 1. The database name is misspelled. 2. The database server name/address is misspelled. 3. The database server port number is wrong. 4. The database instance name is spelled incorrectly. like

Apr 18, 2023 am 09:07 AM

Discuss the principles and applications of Oracle stored procedure dynamic SQL

In recent years, with the rapid increase in data volume and complexity, enterprises need more efficient database operation methods to process this data. Stored procedure dynamic SQL is a solution to achieve this goal, which can help enterprises operate databases more flexibly and efficiently. This article will explore in detail the principles and applications of Oracle stored procedure dynamic SQL. 1. What is stored procedure dynamic SQL? Stored procedure dynamic SQL refers to dynamically generating SQL statements through stored procedures in the Oracle database to solve data problems under different table structures, data differences, etc.

Apr 18, 2023 am 09:07 AM

A brief analysis of solutions to Oracle connection errors

Oracle connection error solution When using Oracle database, we often encounter connection errors. This situation will not only affect our work efficiency, but also cause us to waste a lot of time looking for the problem. This article will introduce several common Oracle connection errors and provide corresponding solutions. 1. ORA-12154: TNS: cannot resolve the specified connection identifier. The ORA-12154 error is usually caused by the inability to resolve the connection identifier. This error can be caused by:- None

Apr 18, 2023 am 09:07 AM

Explore how to use Oracle to query temporary tables

In Oracle database, a temporary table is a temporary table used to store temporary data. Unlike ordinary tables, they are automatically deleted after the session ends. Temporary tables can use SELECT, INSERT, UPDATE, DELETE and other operations like ordinary tables, but their data is only visible to the current session and cannot be accessed in other sessions. In this article, we will explore how to query temporary tables using Oracle. To create a temporary table in an Oracle database, you can use CREATE GLOBAL TEM

Apr 18, 2023 am 09:07 AM