Found a total of 678 related content
oracle数据库如何还原
Article Introduction:Oracle 数据库还原涉及从备份或恢复日志中重建损坏或丢失的数据库,包括准备还原、恢复数据文件、打开数据库、应用恢复日志、恢复数据字典、重建索引等步骤。其中,使用 Recovery Manager (RMAN) 可自动化此过程。
2024-06-12
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oracle数据库如何备份还原
Article Introduction:Oracle数据库备份可通过RMAN备份、导出/导入实用程序、逻辑备份(Flashback)实现。还原则根据备份类型而异,包括:RMAN备份还原、导出/导入导出还原、逻辑备份(Flashback)还原,具体还原过程涉及启动RMAN连接数据库、使用RESTORE/RECOVER命令还原备份集,导出/导入文件,重建物和权限,使用Flashback命令恢复到特定时间点等步骤。
2024-06-12
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761
How to restore deleted data in oracle database
Article Introduction:Deleted data in Oracle can be restored by following these steps: Confirm that the data exists in the Recycle Bin. Verify that you have UNRECOVER TABLE permission. Use the UNRECOVER TABLE statement to restore the data. Optional: Use SCN to specify the specific data version to restore. Execute COMMIT to make it permanent.
2024-04-18
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585
Completely master Oracle database backup and restore
Article Introduction:This article brings you relevant knowledge about Oracle, which mainly introduces issues related to database backup and restoration. The backup and recovery in Oracle are divided into: logical backup and physical backup. Physical backup is divided into two categories: cold backup and hot backup. Let's take a look at them together. I hope it will be helpful to everyone.
2022-07-12
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4870
oracle database error
Article Introduction:In the process of using Oracle database, we often encounter various error reports, some of which will directly cause the database to become unusable and affect the normal progress of business. This article will focus on Oracle database error reporting, discuss the causes of error reporting and common solutions, to help readers better understand and solve Oracle database error reporting problems. 1. Reasons for Oracle database errors When using Oracle database, various error situations may occur due to various reasons, such as errors during installation and execution of SQL statements.
2023-05-18
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902
Oracle 64 or 32: How to choose the best database edition?
Article Introduction:Oracle 64 or 32: How to choose the best database edition? As a database administrator or application developer, choosing the right database version is very important. When deciding to use an Oracle database, the most basic question is whether to choose the 32-bit or 64-bit version. In this article, we'll look at how to decide whether you should choose a 64-bit or 32-bit version of Oracle Database, and we'll discuss the advantages and disadvantages of both versions. 32-bit Oracle Database version 32-bit O
2023-04-17
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506
Unable to connect to oracle database
Article Introduction:In the process of database development and data management, we often encounter the problem of not being able to connect to the database, which is a very troublesome thing. Today we will talk about the solution to the problem of being unable to connect to the Oracle database. First, we need to understand several reasons why we cannot connect to the Oracle database. The first possibility is a network problem. An unstable network connection or incorrect configuration will affect the connection. The second reason is the permission issue. Without the correct user name and password, you cannot connect to the Oracle database. Another possibility is to count
2023-05-13
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1662
The secret of Oracle database version: It turns out that Oracle has so many versions!
Article Introduction:The secret of Oracle database version: It turns out that Oracle has so many versions! Oracle is a world-renowned database management system with many versions, each with its own unique features and functions. In this article, we will delve into the features of different versions of Oracle database and provide some specific code examples. 1. Oracle database version classification Oracle database versions can be classified in different ways. Common classification methods include: By release year: Orac
2024-03-07
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835
sql怎么还原数据库
Article Introduction:可以通过以下方法使用 SQL 还原数据库:使用 RESTORE DATABASE 语句从备份文件还原数据库。使用 SQL Server Management Studio 中的还原向导进行还原。使用 RESTORE LOG 语句还原日志文件。
2024-06-03
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451
oracle close database
Article Introduction:When using the Oracle database, sometimes you need to shut it down. This may be for maintenance, backup, or other operations. Regardless of the reason, shutting down an Oracle database is not a simple task and requires certain understanding and skills. In this article, we will explain how to shut down an Oracle database. 1. Close the background process. Before closing the Oracle database, you need to close the background process first. The background process is created when the Oracle instance starts and is used to manage the running of the database instance. You need to log in with an operating system account
2023-05-07
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665
The difference between oracle database and sql database
Article Introduction:The main differences between Oracle Database and SQL Database are as follows: Ownership: Oracle Database is owned by Oracle Corporation while SQL Database is owned by Microsoft Corporation. Programming Language: Oracle Database uses PL/SQL while SQL Database uses T-SQL. Data types: Oracle Database provides a wider range of data types, including objects and collections. Scalability: Oracle database is more scalable and suitable for large data sets. Concurrency: Oracle Database uses MVCC while SQL Database uses row locks. Cost: Oracle Database is commercial software, while SQL Data
2024-05-10
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666
What are the basic statements of Oracle database?
Article Introduction:Basic statements of Oracle database: 1. Create database; 2. Delete database; 3. Back up database; 4. Database restore; 5. Rename table; 6. Modify fields; 7. Delete index, etc.
2021-03-16
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29749
Reasons and solutions for automatic shutdown of Oracle database
Article Introduction:Oracle database automatic shutdown problem analysis and solution Oracle database is an enterprise-level relational database. Its stability and reliability directly affect the security of enterprise data and business continuity. However, in the process of using the Oracle database, automatic shutdown sometimes occurs, which causes uneasiness and worry for database users. This article will analyze and give solutions from the following four aspects: 1. Cause analysis, 2. Log analysis, 3. Configuration check, 4. Solution. 1. Cause analysis Oracle database automatically shuts down
2023-04-25
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2744
The key to improving database performance: Choose Oracle or MySQL?
Article Introduction:The key to improving database performance: Choose Oracle or MySQL? Introduction: In the information age, database is one of the important data management tools for enterprises. With the advent of the big data era, database performance has become a key factor in enterprise development. Oracle and MySQL are two well-known relational database management systems that are favored by enterprises. So, when it comes to improving database performance, is it wiser to choose Oracle or MySQL? This article will cover performance, scalability, stability, cost and adaptability.
2023-09-10
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308
mysql如何还原数据库
Article Introduction:还原 MySQL 数据库的方法:1. 停止 MySQL 服务;2. 备份数据库文件;3. 删除现有数据库;4. 创建新数据库;5. 导入备份文件;6. 启动 MySQL 服务。
2024-06-14
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973
How to restore database with phpmyadmin
Article Introduction:The method for phpmyadmin to restore the database is: first determine the type of database backup file; then create an empty database with the database name in [PHPmyAdmin]; then enter the database by default; finally select [Import] and click to execute.
2020-06-15
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2407
Oracle database log types and management techniques
Article Introduction:Oracle database log types and management techniques In the Oracle database, the log is a very important component. It records the detailed information of the database operation for fault recovery and data restoration in the event of a failure or unexpected situation. In this article, we will introduce the main types of logs in Oracle database, as well as some management techniques and code examples. 1. Oracle database log types Archived log (ArchivedRedoLog) Archived log is the most popular in Oracle database
2024-03-11
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360
oracle database error
Article Introduction:Oracle database errors Oracle database is one of the most commonly used databases in the industry. However, in the process of using Oracle database, various problems will inevitably occur, such as database connection failure, syntax errors, deadlocks, etc. Among them, database errors are the most common problems we encounter when using Oracle database. Let's summarize the common errors and solutions of Oracle database. 1. ORA-01017: invalid username/password;
2023-05-18
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379
How to use oracle database
Article Introduction:Oracle Database is a powerful RDBMS that offers scalability, reliability, and security. After connecting to the database, you can create databases, tables, insert data, query data, update data, and delete data. In addition, Oracle Database provides advanced features such as transactions, constraints, indexes, triggers, and stored procedures.
2024-04-19
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219
Modify oracle database password
Article Introduction:Oracle Database is one of the most popular relational databases in the world. It has powerful features and excellent stability, so many businesses and organizations rely on it to store and manage valuable data. To protect this data, database administrators need to frequently update database passwords. This article explains how to change the Oracle database password. Whether you are managing an Oracle database for the first time or want to review the process, this article will guide you. Step 1: Copy the password file to a new location before modifying Oracle data
2023-05-14
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808