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  Common operation and tuning of oracle dg maintenance

  1. Check the slave status SQL > select open_mode,database_role,db_unique_name from vault database status 2. Configure the slave database and the application log mode status SQL > alter

  2022-06-01 06:26:59 Views: 278
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  Introduction to the latest functions of OpenSearch

  Abstract: Aliyun Open search (OpenSearch) is a structured data search hosting service, which can provide simple, efficient, stable, low-cost and scalable search solutions. OpenSearch simplifies professional search technology and lowers the threshold in the form of platform service.

  2022-06-01 06:26:58 Views: 226
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  DBMS_BACKUP_RESTORE.DBMS_BACKUP_RESTORE is used for recovery in special cases

  Generally as follows: the system crashes, rman uses control files, no control files are used for automatic backup, and now there is only the last full backup (including control files in the backup), as well as its incremental backup and regular file backup. In general, regular RMAN cannot be used to restore in this case, because the

  2022-06-01 06:26:58 Views: 209
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  Recommendation of management methods and tools commonly used in the world's top 500

  Tools can help us standardize and integrate, tools can also help us improve our productivity, professional managers must be able to use tools. Here are nine efficient management methods and tools for dealing with work. By learning these methods, you can make your work organized and accessible.

  2022-06-01 06:26:55 Views: 298
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  Getting started with MySQL-how to invoke command line commands

  How to: invoke a command line command (mysql\ mysqldump\ mysqladmin\ mysqlimport). Mysql is a generic command line client for sending SQL statements to the server, including SQL for administration

  2022-06-01 06:26:54 Views: 249
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  Operate mysql database with python (simple "insert data" operation)

  #! / usr/bin/env python#-*-coding: utf-8-* -''1. The database environment here is local database 2. The database I want to operate through python is test_db3, where there is a table.

  2022-06-01 06:26:54 Views: 259
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  Enq: US-contention

  SQL > select name, parameter1, parameter2, parameter3 from v$event_name where name like'& event';Ente

  2022-06-01 06:26:54 Views: 203
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  Introduction and examples of DEMAND parameters of MySQL query_cache_type

  Query Cache stores SELECT statements and the resulting data results, especially for scenarios where table data changes infrequently, such as static pages, or information where a piece of page changes infrequently. If any write operations occur on this table, then and this table

  2022-06-01 06:26:54 Views: 227
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  According to the value of the link to the future, the eighth data Technology Carnival will be held again, and the data group will open on a grand scale.

  Introduction to http://www.enmotech.com/web/detail/1/597/1.html: time flies, time flies, but the progress of technology is also changing with each passing day, and it is time to sum up the year, the eighth session of data technology.

  2022-06-01 06:26:42 Views: 249
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  It turns out that Wechat can still chat after it has been deleted, as long as it is such a simple operation.

  Wechat, as one of the most commonly used social tools, must be familiar with some commonly used functions, but one of the features that people least like about Wechat is that it will be deleted by Wechat friends when they do not accept any notification. So if deleted by Wechat friends, how can we continue to chat? This is a lot of WeChat.

  2022-06-01 06:26:38 Views: 207
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  ORACLE_ one-line function _ CEIL FLOOR ROUND TRUNC

  One-line functions part 1 Chapter 1 numeric functions-- 1 create the tablespace that the user specifies to use-- 1. 1 View the current tablespace status COL tablespace_name FOR a15 placeCOL file_name FOR a50 TableS

  2022-06-01 06:26:29 Views: 205
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  Oracle RAC implementation details-pre-installation environment configuration 03

  Oracle RAC implementation details-pre-installation environment configuration 03 1: install vbox virtual machine 2: install operating system 3: RAC01 database server configuration 3.1 configuration network 3.2 system package 3.3 hosts configuration 3.4

  2022-06-01 06:26:29 Views: 223
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  Jin Liguan announced that the M11 series is coming, whether the gold fans can return to their arms, let's wait and see.

  Jin Liguan announced that the M11 series is coming. Let's wait and see whether the gold powder can come back into our arms. We don't know if you, like Xiao Jiang, haven't heard from GIONEE mobile phone for a long time. Xiao Jiang Wechat has been following GIONEE mobile phone's official Wechat account, but at 09:28 this morning, Jin Li

  2022-06-01 06:26:25 Views: 263
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  [Mysql] what causes the MySQL database server disk IO to be high?

  Original address: http://mp.weixin.qq.com/s?__biz=MjM5NzAzMTY4NQ==&mid=2653929453&idx=1&sn=acfdda3bbf165b2f094d0d

  2022-06-01 06:26:21 Views: 278
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  Oracle12C complete uninstall steps on Window7 system

  Complete uninstall Oracle 12c on Windows7 step 1.bat file directly click uninstall to open the database installation path, such as: C:\ app\ zhunli\ virtual\ product\ 12.2.0\ dbhome_1\ *.

  2022-06-01 06:26:21 Views: 276
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  Vectorworks 2020 for mac (3D Architecture Design Software) v2020 SP4 Activation

  Vectorworks 2020 is an architectural design software used on the Mac OS platform. Although it is not as familiar to Chinese designers as AutoCAD, it is the preferred tool software for designers in Europe, the United States and Japan. Vectorwor

  2022-06-01 06:26:21 Views: 207
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  [architecture] understanding of LGWR process trigger mechanism

  LGWR trigger condition: the log is always written to disk before the data is written to disk. The LGWR process is triggered to write the log from the log buffer to the log file under the following conditions: (1) user submission (commit) (2) there is a log buffer that is not written to disk (3)

  2022-06-01 06:26:20 Views: 289
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  Mysqlpump-A database backup program

  A backup tool has been added after Mysql 5.7. the mysqlpumpmysqlpump client performs logical backup Mysqlpump new features to execute the database and its objects in parallel, speeding up the dump process to better control which databases and data

  2022-06-01 06:26:18 Views: 285
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  Read the article "the importance of establishing a correct index to improve database performance"

  Original: https://www.enmotech.com/web/detail/1/767/1.html article reproduced from the official account architect's Road architect's Road, author 58 Shen Jian Guide: this article explains the common type knot

  2022-06-01 06:26:07 Views: 245
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  How to quickly and effectively shut down the MySQL service when the database is busy

  If the InnoDB_buffer_size parameter is too large and there is too much dirty data in the buffer, the dirty data must be flushed to disk when shutting down MySQL, which may be a long process, resulting in a long time to shut down the MySQL service. In can be set temporarily

  2022-06-01 06:26:04 Views: 216