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  What are the advantages of major open source databases

  This article mainly introduces "what are the advantages of the main open source databases". In the daily operation, I believe many people have doubts about the advantages of the main open source databases. The editor consulted all kinds of materials and sorted out the simple and easy-to-use operation methods. I hope to answer "what are the advantages of the main open source databases?"

  Data database product supply supplier support platform business advantage function competition program model industry enterprise level learning hosting different professional 2022-05-31
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  Snapshot standby mode

  During the incremental production of a production business, the customer found that the database would switch the Snapshot standby mode. Take a learning test. First, the principle shows that in Oracle 11g, data guard is the most attractive real-time active data guard.

  Data database physics testing mode log switch application snapshot standby principle increment mode step feature status query production validation no 2022-06-01
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  [Data guard] Switchover handoff

  Active and standby library switching operation verification (switchover) 1. Main library performs switching (A machine) (1) check the status of the main library SQL > select db_unique_name,open_mode,database_role

  Status switching data log library application authentication again command real-time situation database user role synchronization 2022-06-01
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  The Foundation of Oracle (1)

  Database system: Microsoft's SQL server, IBM's DB2, Oracle's Oracle, Mysql, etc., are well-known database management software. Now let's learn about the oracle database. Manage Oracle database OEM

  Data database status instance management file user command password method process monitor transaction system work control activity login different well-known 2022-06-01
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  Oracle startup and shutdown

  Oracle database startup and shutdown mode to start and shut down the database, you must log in as a user with Oracle administrator authority, usually as a user with SYSDBA authority. Generally speaking, we often use INTERNAL users to launch

  Data database mode commands users instances systems files transactions this is that is logs permissions phases prompts activities three that is memory background 2022-06-01
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  DG-- how to open physical Standby in READ ONLY mode

  This article is about how to open physics Standby in DG-READ ONLY mode. The editor thinks it is very practical, so I share it with you. I hope you can get something after reading this article. Let's take a look at it. Physics

  Data applications databases schemas physics state switching functions that is files logs more versions knowledge articles synchronization queries consistency nothing 2022-06-01
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  "Open Source Database Ecological Development Research report" released GreatSQL as the best alternative to MySQL5.7!

  In recent years, with the further promotion of digital transformation and the explosive growth of the amount of data, the changing demand for database in industry applications promotes the innovation of database technology. As the base of digital economy, database connects the upper application and the underlying basic resources, and shows great value and potential in the era of digital economy. nine

  Data database enterprise industry technology application finance version community telecommunications development industry product cycle performance aspect life security scenario ecology 2023-11-24
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  What are the methods of Oracle backup and recovery

  The knowledge points of this article "what are the methods of Oracle backup and recovery" are not quite understood by most people, so the editor summarizes the following contents, with detailed contents and clear steps, which can be used for reference. I hope you can gain something after reading this article. Let's take a look at this one. "

  File data database control backup method status online method application content script generation selection difference consistency consistency information steps parameters 2022-05-31
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  Oracle 11G Active DataGuard role switching

  1. Prepare before switching: 1.1.1 main library check: 1.1.1 FAL check SQL > show parameter fal;NAME TYPE VALUE--

  Log status application check switch original master parameter data library cut file management verification physics instance feature directory attachment report preparation role 2022-06-01
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  Oracle database startup and shutdown

  To understand the startup and stop of Oracle databases, you need to understand the definitions of the terms "instance" and "database": database (database): a collection of physical operating system files or disks (disk). Example (

  Data database instance file status command memory process view association parameter log procedure query above two background most official method 2022-06-01
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  The connection between CDB and PDB

  1. Connect sqlplus system/xxxxx@10.8.5.206:1521/pdbtestALTER SESSION SET CONTAINER = PDB$SEED;2. Switch connection C in CDB:

  Data database plug-in status week instance switch 2022-06-01
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  Dataguard lost ORA-16016 in the library archive due to no archive deletion policy configured for the main database parameters.

  Dataguard Archive lost due to no archive deletion policy configured in the main database parameters. Today, during the inspection of the library, it was found that the standby database was not started, and the monitoring agent was also turned off. Start manually to open the standby database (read_only) in accordance with the log convention, but it is displayed during the open process.

  Application policy manual log parameter data database error configuration background convention copy time is in authority directory script scope process processing 2022-06-01
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  How to start and shut down the database in oracle

  This article will explain in detail how to start and shut down the database in oracle. The content of the article is of high quality, so the editor shares it for you as a reference. I hope you will have a certain understanding of the relevant knowledge after reading this article. Start and shut down databases: each database contains at least one example

  Data database file parameter load mode command user control service memory only log server task information content background article more 2022-05-31
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  Wanli open source: China Mobile's self-controllable database project has accelerated its entry into the first echelon of domestic databases.

  Original title: creative Information: China Mobile's self-controllable database project accelerated into the first echelon of domestic database. (reporter Kang Xi) Creative Information (300366). The company's subsidiary Wanli Open Source has become "China Mobile Information Technology Co., Ltd."

  Data database domestic Wanli company information product creativity domain advantage manufacturer technology China project development mobile distributed core energy industry 2022-06-01
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  How to solve the ORA-00392 error when the database executes alter database open resetlogs

  This article mainly introduces "how to solve the ORA-00392 error when the database executes alter database open resetlogs". In the daily operation, I believe that many people are in how to solve the problem of database executing alter database.

  Data databases errors prompts learning solutions problems more help practical next bad articles methods phenomena theories knowledge articles websites solutions 2022-05-31
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  ORA-38760: This database instance failed to turn on flashback database

  Last night I learned that ORACLE was executed by HR users: create table reg_copy as select * from regions; was a blank without any response, so I didn't want to quit forcibly, so I used ORACLE users to terminate the meeting.

  Data database mode user reference processing consistency sequence command fault article step for blank system level result conclusion yes 2022-06-01
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  Wanli (pick one) open source GreatDB and other introduction

  Wanli Open Source continues to enrich its own product line, and has successively launched a series of stand-alone database management systems (GreatDB), distributed database management systems (GreatDB Cluster) and security databases (Grea).

  Data database system product thousands of miles management service management system distribution software security operating system platform enterprise scenario user application stand-alone server business 2022-06-01
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  How to manage Dataguard on a daily basis

  In this issue, the editor will bring you about how to carry out the daily management of Dataguard. The article is rich in content and analyzes and narrates it from a professional point of view. I hope you can get something after reading this article. Dataguard daily management 1.fail over2

  Data database schema protection log standby switch application instance load command status check error sequence management content function common use situation 2022-05-31
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  C # how to connect to SQLServer database

  C # how to connect SQLServer database, I believe that many inexperienced people do not know what to do, so this paper summarizes the causes of the problem and solutions, through this article I hope you can solve this problem. C # connecting to database: Connection object 1.Conne

  Data database method object space program Category success difference code content name command more interface resource problem input helpless for this 2022-06-03
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  Methods of creating, connecting, starting and shutting down CDB and PDB

  This article focuses on "how to create, connect, start and shut down CDB and PDB". Interested friends may wish to take a look. The method introduced in this paper is simple, fast and practical. Let the editor take you to learn how to create, connect, start and shut down CDB and PDB.

  Data database plug-in method state content actual container time trigger faceted learning management loading practical common deeper key keyword interest 2022-05-31