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  Oracle's trigger for sql Development

  Oracle's trigger for sql development-- creating an emp_log table to record changes to the emp table create sequence emp_seq increment by 1 start with 1 maxv

  2022-06-01 21:52:35 Views: 297
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  ADG repository does not allow switching logs

  Database data files are not allowed to write data, switching logs need to write data to the data file. The reason why rman backup can be done is that rman backup writes control file ~ 1, prepares the library demonstration, will report an error, and the database is opened. SQL > archive log list

  2022-06-01 21:52:32 Views: 270
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  MHA+MySQL to achieve High availability of mysql

  1. A brief introduction to MHA MHA (Master High Availability) is currently a relatively mature solution for the high availability of MySQL, which is owned by youshimaton, a Japanese company of DeNA (now working at Facebo

  2022-06-01 21:52:32 Views: 282
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  The blackmail virus Tiger4444 is found in the SQL Server database mdf file. The extension becomes Tiger4444

  SQL, database, blackmail virus, mdf file poisoning, Tiger4444*SQL Server database mdf file contains blackmail virus. MDF. Tiger 4444. In the Tiger4444SQL Server database mdf file

  2022-06-01 21:52:32 Views: 262
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  [MongoDB] handles jumbo chunks warning messages

  What is a Jumbo chunk that is a chunk that exceeds the set chunk size, and the default chunk size is 64m? why do you deal with how Jumbo chunkjumbo chunk cannot be migrated? # find Jumbo chu first

  2022-06-01 21:52:31 Views: 249
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  Using PowerShell to operate Foxpro on a 64-bit system

  Operation steps: 1. Download the OLEDB driver VFPOLEDBSetup.msi for Foxpro, install it, and choose to allow everyone to run. two。 Register the OLEDB driver: regsvr32 / s "C:\ Program Fil

  2022-06-01 21:52:17 Views: 290
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  Analysis of Technical Essentials of mixed transaction Analysis and processing "HTAP"

  HTAP is a popular concept in recent years. This article will talk about the past and present life and technical characteristics of HTAP. 1. Data application categories can be simply divided as follows according to the usage characteristics of the data. Before choosing a technology platform, we need to make such a positioning. 1.1 OLTP online transactions

  2022-06-01 21:52:08 Views: 207
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  Four compressed formats of hbase

  Compression format supported by Hbase: compression format supported by hbase: GZ (GZIP), LZ0,LZ4,SnappyGZ: for cold data compression, compared with Snappy and LZ0, GZIP has a higher compression ratio, but consumes more CPU, decompression / compression speed

  2022-06-01 21:52:05 Views: 253
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  Tencent PaaS Influxdb node migration

  Author: what if there is a sharp increase in the number of archived files after Oracle data migration? The operation of Docker explains in detail the installation and construction of Docker.

  2022-06-01 21:52:05 Views: 237
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  Best practices | Technical Innovation of OceanBase transaction engine

  Yan ran, a senior technical expert of Ant Financial Services Group's OceanBase team and one of the start-up members of OceanBase, is currently responsible for the research and development of transaction engine and performance optimization. The following is a transcript of the speech: first of all, let's talk about a topic that everyone is very interested in: with the existing classics.

  2022-06-01 21:51:53 Views: 203
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  More important processes in dataguard

  RFS:remotefile server . The process is that the standby library accepts the redo information triggered by the lgwr process of the primary library and writes it to the standbyredo log. There is no doubt that the RFS process should cooperate with other processes

  2022-06-01 21:51:53 Views: 217
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  How to debug stored functions in the development environment dbForge Studio for MySQL--

  DbForge Studio for MySQL is a MySQL client that is widely used in the Windows platform. It enables MySQL developers and managers to create and execute queries, develop and debug M together with others in a convenient environment.

  2022-06-01 21:51:45 Views: 246
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  The characteristics of mysql grouping function

  # it can be compared if it can be sorted, and null values SELECT MAX (last_name), MIN (last_name), COUNT (last_name) FROM employees;#count can only be calculated but not

  2022-06-01 21:51:42 Views: 217
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  MySQL fundamentals (04): stored procedures and views, usage and feature details

  This article source code: GitHub point here | | GitEE point here 1, stored procedure 1, concept introduction stored program is a combination of SQL statements stored in the server, compiled and created and saved in the database, the user can call and execute through the name of the stored procedure. Stored procedure core

  2022-06-01 21:51:42 Views: 264
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  Data files are not recognized / locked by ORA-01157 and ORA-01110

  The same error was reported in production before. The user queried the data in the client table and reported the following error: Errors in file / oratrace/xxx/diag/rdbms/xxx/xxx2/trace/xxx2_dbw0_845

  2022-06-01 21:51:41 Views: 290
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  MySQL 8.0.17 clone plugin local remote backup and build the master-slave test process

  This article is the testing process, the summary article will see the next article, the specific process is as follows: [root@es2 ~] # yum-y install mysql-community-* loaded plug-in: fastestmirror is checking mys

  2022-06-01 21:51:41 Views: 275
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  Giant Sequoia Tech | SequoiaDB data domain and storage planning

  Background in recent years, the business of the enterprise has developed rapidly, the number of customers has been increasing, the pressure of the background service system is also increasing, and the hardware resources of the system have become very tight. Therefore, on the basis of controllable technical risk, we hope to introduce big data technology and use big data technology to optimize the existing IT system.

  2022-06-01 21:51:26 Views: 279
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  Because Redis opened the AOF, the problem of hang residence was dealt with.

  Problem description: normal business feedback has an API that can be accessed normally within the 100ms, and sometimes the call time will take more than 10 seconds. Check the redis log according to the time provided by the service, and the existing record is as follows: 8788 Aug M 24 Aug 01, 21 Aug 26.008 * Asyn

  2022-06-01 21:51:25 Views: 264
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  10g/11g creates a scott sample user

  Script for creating scott users in oracle 10g: create script, $ORACLE_HOME/sqlplus/demo/demobld.sql delete script, $ORACLE_HOME/sqlplus/demo/dem

  2022-06-01 21:51:25 Views: 202
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  After initialization of innoDB, the instance failed to start.

  2020-01-22 15:50:28 13707 [ERROR] InnoDB: auto-extending data file. / ibdata1 is of a different size

  2022-06-01 21:51:25 Views: 220