NAV: SLTechnology News&Howtos > Database >

• 

  Carding of Mongodb deployment applications under Linux

  First, Mongodb introduction official website address: http://www.mongodb.org/MongoDB is a high-performance, open source, schemalless document database, is a popular one of the current NoSql database. MongoDB is an introduction.

  2022-06-01 13:23:06 Views: 226
• 

  Oracle optimization-single table paging optimization

  Single table paging optimization idea:-- create a test table: SQL > create table t_test as select * from dba_objects;Table created. For example, the following sql (without filter strips)

  2022-06-01 13:23:06 Views: 203
• 

  MariaDB-Mariabackup Hot backup tool

  The MariaDB-Mariabackup hot backup tool is available in MariaDB10.2.7 (included) and online physical hot backup using the Percona XtraBackup tool is no longer supported. MariaDB 10.1 introduces Mar

  2022-06-01 13:23:06 Views: 262
• 

  Optimization of SQL sentences in Oracle Learning articles

  Optimization of SQL statements in Oracle ① when using select statements to query, do not use "*" instead of all column names, because this writing will have a dynamic problem of parsing for the Oracle system. The Oracle system will convert "*" by querying the data dictionary.

  2022-06-01 13:23:05 Views: 236
• 

  DIX and DIF should tell you what end-to-end data consistency is.

  Architects Technical Alliance those of us who deal with data should know that data goes through multiple components, multiple transmission channels and complex software processing processes in the storage system. Errors in any of these links may lead to data errors. But this kind of error can not be detected immediately.

  2022-06-01 13:22:59 Views: 280
• 

  Automatic initialization of SQL Server 2017 AlwaysOn AG (14)

  Changes in SQL Server 2017 data file disk layout requirements for functional test automatic seed settings because the production environment may store data files on different volumes and instance names are different, the full path to the data file is different. In order to achieve automatic seed setting, heavy

  2022-06-01 13:22:59 Views: 260
• 

  Let me introduce you to MySQL sys schema.

  A new sys schema,sys is introduced in MySQL 5.7. it is a system library that comes with MySQL. When installing the version of MySQL 5.7 and initializing it with mysqld, the sys library will be created automatically. Tables in the sys library

  2022-06-01 13:22:55 Views: 208
• 

  Oracle RAC OFF and R in unix/linux environment

  In some cases, Oracle crs on unix/linux cannot be started, and when you need oracle to start with single instance, you can recompile (Relinking) oracle and turn off the RAC feature, as noted below

  2022-06-01 13:22:55 Views: 276
• 

  SQL Server [backup recovery]: full backup, differential backup or transaction log backup, tail log backup

  Accident background: suddenly the database is damaged for no reason, differential backup or transaction log backup will not be done automatically until 3: 00, so how to restore the data between 2: 00 and 2: 40? This needs to be restored by backing up the tail log. Environment description: a company installed a SQL Serv

  2022-06-01 13:22:55 Views: 235
• 

  11.1-11.5 introduction to LAMP architecture, MySQL installation

  11.1 introduction of LAMP architecture LAMP=Linux+Apache (hettpd) + MySQL+PHPLinux operating system Apache provides web service software, the real name is httpdMySQL storage software, data, strings

  2022-06-01 13:22:36 Views: 243
• 

  Advanced installment of ToughRADIUS

  In the advanced section, we will provide a localized installation reference, but the advanced section requires more expertise and hands-on skills than the quick guide, and we do not encourage everyone to try it in order to save your valuable time. Before the installation is successful, you may encounter information about linux,git

  2022-06-01 13:22:27 Views: 241
• 

  Mysql8.0 binary installation

  The blog is only to record the learning process. Do not spray mysql Community Edition: open source is free, does not provide technical support, and needs to be used with open source tools. Mysql Enterprise Edition: like the community version code, it provides additional features through plug-ins and adds threading plug-ins and audit plug-ins compared to the community version. Etc.

  2022-06-01 13:22:27 Views: 255
• 

  Change SpringCloud ConfigServer persistent storage to MySQL

  The original article is posted on: http://www.gufeng.tech/ Valley style's personal home page 1. The ConfigServer of the background SpringCloud defaults to persistence using git. Git has its natural advantages, such as multi-version management and branching.

  2022-06-01 13:22:27 Views: 242
• 

  Installation of oracle

  1. Modify the hostname: # sed-I "s/HOSTNAME=localhost.localdomain/HOSTNAME=oracledb/" / etc/sysconfig/network# hostn

  2022-06-01 13:22:23 Views: 227
• 

  Comparison table of compatibility between vcenter6.5 win version and operating system and database

  The following is the VMware vCenter Server6.5.0Microsoft SQL Server 2008 Express (R2 SP1)-64-bitYMicrosoft SQL of the database

  2022-06-01 13:22:23 Views: 225
• 

  Mongodb redo slave library

  Export backup files to stop the slave library, note # slave=true#source start mongo, delete the library that needs to be restored, use mydb;db.dropDatabase (); perform recovery to stop mongo, open comment slave=true

  2022-06-01 13:22:23 Views: 210
• 

  Oracle Automated backup script

  Oracle daily RMAN backup script, very basic. However, for multiple Oracle databases that need to be backed up, it can be easily implemented and facilitate the query of batch status in the later period. Backup script, which needs to be modified appropriately based on the linux,windows environment. The main script, which calls the

  2022-06-01 13:22:23 Views: 218
• 

  Mongodb uses the forEach and js custom functions to modify the 19th character of the specified column

  The following is the test: db.csq.insert ({alm:'11110000011111100011110111010110'}); db.csq.insert ({alm:'011100000111111000)

  2022-06-01 13:22:23 Views: 285
• 

  Application Foundation of Oracle SQL language

  Data manipulation mainly involves inserting (insert), modifying (update) and deleting (delete) tables or views. 1.count (*) counts all records and count (field name) field

  2022-06-01 13:22:22 Views: 263
• 

  Multi-table association query optimized by SQL

  In the slow SQL log, you can see an associated query with three tables, as follows: 1

  2022-06-01 13:22:22 Views: 203