Course Introduction：Oracle database backup can be implemented through RMAN backup, export/import utility, and logical backup (Flashback). Restore principles vary according to the backup type, including: RMAN backup and restore, export/import export and restore, logical backup (Flashback) restore. The specific restore process involves starting the RMAN connection database, restoring the backup set using the RESTORE/RECOVER command, exporting/importing files, rebuilding and permissions, and using the Flashback command to restore to a specific point in time.
2025-04-11 comment 0 945
Course Introduction：The secrets of SQL database backup and restore have you ever thought about what will happen if your database suddenly crashes and all the data is lost? This sounds like a nightmare! But don't worry, today we will talk about how to protect your SQL database through backup and restore to make your data safe and worry-free. In my career, I once met a client who lost all data in a single hardware failure because the database was not backed up regularly. This lesson made me deeply realize the importance of backup. Today, I will share with you how to backup and restore SQL databases, and provide some experiences and techniques I have summarized in practice. First, let's start with the basic backup method. In SQLServer, backup count
2025-05-28 comment 0 1045
Course Introduction：In a production environment, no matter how large or small your PostgreSQL database may be, regular backup is an essential aspect of database management. In this article, you will learn how to backup and restore a PostgreSQL database.We assume that yo
2025-06-17 comment 0 642
Course Introduction：The key to database backup is whether it can be restored. Many people mistakenly think that regular backups are safe. In fact, verification of backup effectiveness and testing the recovery process are the core of ensuring data security. 1. The reasons for verifying MySQL backup include: the backup may fail due to interruptions, inconsistent methods, storage corruption and other problems. Only through restore tests can its reliability be confirmed. 2. Common backup types and verification methods: 1. Logical backup (such as mysqldump) can be verified by checking file content, importing test library, and querying key data; 2. Physical backup (such as XtraBackup) requires checking directory structure, preprocessing and starting instance verification; 3. Binary logs need to be checked for continuity and restored through simulated error deletion tests. 3. Effective recovery test steps include
2025-07-18 comment 0 525
Course Introduction：The core purpose of Oracle backup and recovery is to quickly restore the database to a consistent state when data is lost or corrupted. 1. Backup phase: Copy the database file to the backup media through RMAN or other tools. 2. Recovery phase: When a database fails, first restore the backup data, and then restore to the pre-failed state by applying the redo log file.
2025-04-10 comment 0 897
Course Elementary 13824
Course Introduction：Scala Tutorial Scala is a multi-paradigm programming language, designed to integrate various features of object-oriented programming and functional programming.
Course Elementary 82359
Course Introduction："CSS Online Manual" is the official CSS online reference manual. This CSS online development manual contains various CSS properties, definitions, usage methods, example operations, etc. It is an indispensable online query manual for WEB programming learners and developers! CSS: Cascading Style Sheets (English full name: Cascading Style Sheets) is an application used to express HTML (Standard Universal Markup Language).
Course Elementary 13178
Course Introduction：SVG is a markup language for vector graphics in HTML5. It maintains powerful drawing capabilities and at the same time has a very high-end interface to operate graphics by directly operating Dom nodes. This "SVG Tutorial" is intended to allow students to master the SVG language and some of its corresponding APIs, combined with the knowledge of 2D drawing, so that students can render and control complex graphics on the page.
Course Elementary 24628
Course Introduction：In the "AngularJS Chinese Reference Manual", AngularJS extends HTML with new attributes and expressions. AngularJS can build a single page application (SPAs: Single Page Applications). AngularJS is very easy to learn.
Course Elementary 27486
Course Introduction：Go is a new language, a concurrent, garbage-collected, fast-compiled language. It can compile a large Go program in a few seconds on a single computer. Go provides a model for software construction that makes dependency analysis easier and avoids most C-style include files and library headers. Go is a statically typed language, and its type system has no hierarchy. Therefore users do not need to spend time defining relationships between types, which feels more lightweight than typical object-oriented languages. Go is a completely garbage-collected language and provides basic support for concurrent execution and communication. By its design, Go is intended to provide a method for constructing system software on multi-core machines.
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