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- How to modify the memory configuration of Oracle database
- Oracle Database is one of the most popular relational databases in the world. As a scalable database, Oracle can handle large amounts of complex data in large enterprise applications. In these data processing processes, memory management is a very critical item, because reasonable memory usage can greatly improve the performance and response speed of the Oracle database. In this article, we will describe how to modify the memory configuration of an Oracle database. 1. Understand the Oracle database memory configuration Oracle database is running
- Oracle 4354 2023-04-04 10:58:32
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- How to modify Oracle sequence
- Oracle is a popular relational database management system that is widely used in various enterprise applications. A sequence is a special object that generates auto-incrementing values in Oracle database. It is usually used to create unique identifiers, primary keys, etc. In practical applications, you may need to modify the current value of the sequence or the properties of the sequence object itself. In this article, we will explain how to modify Oracle sequences. First, we need to understand some basic concepts and properties of Oracle sequences. Each sequence object has a unique name and can be created in any Oracle
- Oracle 2358 2023-04-04 11:01:51
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- An article introducing Oracle's stored procedure syntax
- Oracle is a relational database management system with powerful stored procedure functions. As a developer, only by mastering the syntax of stored procedures can we achieve efficient, simple, and safe database operations according to business needs. This article will introduce Oracle's stored procedure syntax. 1. Introduction to stored procedures In Oracle, a stored procedure is a database object, which is a series of SQL statements and control structures written in PL/SQL language. It is a reusable program that encapsulates multiple SQL statements and can implement complex business logic, greatly improving
- Oracle 1843 2023-04-04 11:01:38
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- How to modify table name in oracle
- In Oracle database, if you need to change the name of a table, you can use the ALTER statement. Before modifying the table name, please back up the data of the original table to avoid data loss. The following are the steps to modify the table name: Step 1: Log in to the Oracle database with administrator privileges. Step 2: Use the following command to find the table that needs to be changed: ```sqlSELECT table_name FROM user_tables WHERE table_name = 'old_table_nam
- Oracle 13033 2023-04-04 09:39:04
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- Detailed explanation of how to back up Oracle database
- As an industry-leading relational database system, Oracle database protects data security and is a necessary task. Data loss means stasis and loss of company operations. Therefore, it is very necessary to adopt certain strategies and measures in backup and recovery. This article will introduce how to back up Oracle database. 1. Oracle database backup types Oracle database backup can be divided into two types: full backup and incremental backup: 1. Full backup: Full backup is to back up the complete database. This backup method requires the first backup
- Oracle 9175 2023-04-04 09:48:48
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- Discuss how to add data files in Oracle
- Oracle is a widely used relational database management system, and managing data files is one of its foundations. When you want to add data to the database, you may encounter the problem of insufficient space. At this time, you need to add data files. In this article, we will discuss how to add data files in Oracle. 1. What is a data file? In Oracle, data files are the real physical files used to save the database. Each data file contains one or more tablespaces in the database. When you create tables in a database, what you actually create are these empty tables
- Oracle 1742 2023-04-04 09:50:58
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- How to do string concatenation in Oracle stored procedure
- In Oracle database, a stored procedure is a programmed code unit that can be called and execute a series of procedures. Stored procedures allow complex operations on the database and can also receive parameters. Among them, string splicing is a very common requirement. This article will introduce how to perform string splicing in Oracle stored procedures. Generally, when we write SQL scripts, we use the "||" operator to complete string concatenation. However, in stored procedures, using the "||" operator may cause additional overhead. Therefore, Oracle
- Oracle 5200 2023-04-04 09:53:06
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- Detailed explanation of how to delete table data in Oracle database
- Oracle database is a very powerful management database software. It can store massive amounts of data, manage multiple users, and provide high availability and reliability of data. In the daily work of database administrators, deleting table data is a very common operation. Today let us learn how to delete table data in Oracle database. 1. Confirm the deleted table data. Before deleting table data, you must first confirm which table data needs to be deleted. You can use the SELECT statement to query the table data that needs to be deleted. For example, if we need to delete the name "e
- Oracle 6267 2023-04-04 09:54:09
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![[Summary] Reasons and solutions for the oracle monitoring service to fail to start](https://img.php.cn/upload/article/202304/04/2023040409553439104.jpg?x-oss-process=image/resize,m_fill,h_100,w_220)
- [Summary] Reasons and solutions for the oracle monitoring service to fail to start
- In recent years, with the rapid development of Internet technology, databases have become more and more widely used. The Oracle database is a widely used database. However, during the use of the Oracle database, various problems will also be encountered. One of the most common problems is that the listening service that starts Oracle cannot be started. This article will detail the causes and solutions to this problem. 1. Cause of the problem The listening service of the Oracle database is a very important component. It is the bridge between the Oracle database instance and the client.
- Oracle 13183 2023-04-04 09:55:53
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- How to change table fields in oracle
- Oracle database is a world-class relational database management system. It is widely used in enterprise-level applications and data warehouses. Among them, the table is one of the most basic components of the database in the relational database architecture. However, in the actual application process, we sometimes need to change the fields of the table, such as changing the field name, data type, length, etc. This article will introduce how Oracle changes the fields of a table. 1. Change the field name Oracle allows you to change the field name of the table through the ALTER TABLE command. The specific syntax is as follows:```
- Oracle 10096 2023-04-04 09:57:02
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- A brief analysis of how to change the table space of a table in Oracle
- In Oracle database, table space is a physical storage structure used to manage data and indexes. When a table is created, it is assigned to a default tablespace. However, in actual applications, there may be a need to move the table to a different table space. In this case, the table space needs to be changed. The following will introduce how to change the table space of a table in the Oracle database. 1. Determine the table space where the current table is located. Before performing table space changes, you first need to determine the table space where the current table is located. You can query the table space where the table is located through the following SQL statement:
- Oracle 3333 2023-04-04 09:57:58
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- Let's talk about knowledge about oracle stored procedure compilation
- In Oracle database, a stored procedure is a program unit that can be stored on the database server. It can accept input parameters and can also have a series of processing statements, and finally returns the results to the client application. Stored procedures are an important technology that help improve database performance and enhance data security. When using Oracle stored procedures, compilation is an essential step. Only after successful compilation can it be used in actual application environments. The following will introduce the relevant knowledge of Oracle stored procedure compilation. 1. Orac
- Oracle 1172 2023-04-04 10:02:20
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- How to delete oracle lock (a brief analysis of the method)
- In Oracle database management, locking is a common phenomenon. When a database object is used, the Oracle system marks the object as "locked" to ensure that people do not accidentally change or delete the object. However, sometimes these locks may prevent other programs or users from functioning properly, and the locks need to be removed. How to remove Oracle lock? 1. Check the locking situation: You can check the current locking situation of the Oracle database through the following script: ```SELECT c.owner,c.
- Oracle 1758 2023-04-04 10:02:49
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- How to delete Oracle instance under Linux system
- Oracle is a widely used relational database management system, and many companies use Oracle to manage their data. Under certain circumstances, you may need to remove an Oracle instance, such as if you need to reinstall Oracle or if you need to move the instance from one server to another. This article will introduce how to delete an Oracle instance under Linux system. 1. Stop the Oracle instance and listener. Before deleting the Oracle instance, you need to stop it.
- Oracle 756 2023-04-04 10:04:58
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- How to install oracle on linux (tutorial sharing)
- Oracle Linux is a Linux distribution based on the Red Hat Enterprise Linux (RHEL) source code and is developed and maintained by Oracle Corporation of the United States. It is designed for enterprise-level applications and provides a high level of security, reliability, and stability. If you want to use Oracle Linux as a server operating system, then you need to install it. The following is a simple Oracle Linux installation tutorial to help you install and configure a basic system. ##
- Oracle 2433 2023-04-04 10:07:49
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