NAV: SLTechnology News&Howtos > Database >

• 

  Oracle SQL Model Clause

  Refer to the official documentation and learn the Oracle SQL Model syntax. Extracted from Pro Oracle SQL:With the MODEL clause, you build matrixes (or a mode

  2022-06-01 06:35:26 Views: 301
• 

  Release of high water level in Oracle database-- release of LOB field space

  In the Oracle database, the disk capacity occupied by the table increases as the data grows. When the data in the table is no longer needed, delete is performed on the table. The high water level, which represents the mark of the space occupied in the table, will not decrease with the data deletion. The high water level does not change, even if the database is deleted.

  2022-06-01 06:35:26 Views: 204
• 

  Application and advantage summary of gps trajectory simulator

  Gps trajectory simulator should have complete civil signal support capability, which is suitable for the development, production, testing and verification of all kinds of civil navigation terminals. The gps trajectory simulator is equipped with inertial navigation simulation components, which can simulate satellite navigation signals and inertial navigation simulation signals at the same time, which can be used for the development and generation of integrated navigation reception.

  2022-06-01 06:35:26 Views: 233
• 

  Install MySQL 5.6.10 package conflict problem

  Lib files such as mysql-libs-5.1.73-5.el6_6.x86_64 are installed by default in the Liunx operating system, which will conflict with the installation files of MySQL5.6.10. The first installation is as follows (conflicts wi

  2022-06-01 06:35:26 Views: 269
• 

  Oracle 12C xtts and dbms_file_transfer

  1. Initialization setup phase 1.1 install the target database software and create the target database install the target Oracle database software on the target system, the version should be Oracle12c, the operating system is Linux, I am 12.2.0.1 here. Created in the source database

  2022-06-01 06:35:25 Views: 241
• 

  2020 mac duplicate File Finder sharing that you most deserve to have ~

  Is it too cumbersome to search for duplicate files on mac?! Sorted out several very popular repeated search applications to share with you to simplify your tedious work. Come and have a look at https://www.macz.com/news/5016.html202.

  2022-06-01 06:35:05 Views: 299
• 

  [PG_PSQL] PSQL usage test

  -- psql features and applications-- create users. Role does not have login permission create user mydbuser with encrypted password 'mydbuser';--orcreate rol by default.

  2022-06-01 06:35:04 Views: 248
• 

  Codis migration slot encountered excessive value data resulting in redis process congestion

  Codis migration slot encountered excessive value data leading to redis process congestion problem background: in the afternoon of 2016-11-08, consult codis to start the migration slot. During the migration, dba found that the redis in the group1 could not connect, and the proxy entered

  2022-06-01 06:35:04 Views: 292
• 

  [DB discussion] talking about the understanding of the isolation level of database

  A brief discussion on the understanding of database isolation level when people refer to database management system (DBMS), they will mention transactions, ACID features, and transaction isolation level. The transaction itself appears in order to ensure that the running state of the system will eventually be consistent (satisfying a set of constraints).

  2022-06-01 06:34:53 Views: 260
• 

  Root users of mysql cannot authorize ordinary users to deal with the problem.

  First look at the error phenomenon: it is strange that root users should not be able to authorize ordinary users. The hint seems to say the password is wrong. But actually there's nothing wrong with the password. Decided to see what the permissions of the user root@localhost are in the mysql.user table. In m

  2022-06-01 06:34:44 Views: 297
• 

  Oracle RAC CacheFusion Series XVI: Oracle RAC CurrentBlock Server

  There are two ways to store PCM lock resources, 1. If the PCM lock belongs to the local instance, it is stored in the LE structure of the local instance. two。 If the PCM lock belongs to the remote instance, it will be allocated and stored in the shared pool of the local instance. Kclle structure: kcllerls table

  2022-06-01 06:34:39 Views: 286
• 

  Summary on whether the secondary index of MySQL InnoDB table is added to the primary key

  1. There is also a clear official statement on whether to add primary keys to the secondary index of MySQL InnoDB table. It is recommended that all columns of primary keys be forcibly added when the secondary index of online MySQL is created, so that all MySQL versions can be unified. Before 2.MySQL 5.6.9

  2022-06-01 06:34:39 Views: 202
• 

  [Mysql] Mysql is overloaded and app access is delayed

  Received the alarm message that the load of the MySQL instance at the backend of an online business is relatively high, so log in to the server to check and confirm 1. First of all, let's check the OS level to confirm here) collapse or open the top command [yejr@imysql.com:~] # top top

  2022-06-01 06:34:39 Views: 274
• 

  Texpad for Mac (LaTeX Editor Software) v1.8.15 Activation

  The Texpad for mac version is an excellent LaTeX editor software on Macos. Using the Texpad Mac version, when Texpad opens your project, it will scan the project for LaTeX structures, commands, and any files that are included.

  2022-06-01 06:34:36 Views: 230
• 

  Misoperation, delete the dbs folder under / u01/app/oracle/product/11.2.0/dbhome_1/.

  Problem: executing rm-rf / u01/app/oracle/product/11.2.0/dbhome_1/dbs causes all dbs files and files under the folder to be deleted. Description: causes the database startup to fail to find the parameter file (spfile

  2022-06-01 06:34:35 Views: 230
• 

  Inception deployment testing

  Welcome to reprint, please indicate the author and source. Author: Liu Chunlei blog: http://blog.itpub.net/28823725/ if you have any questions, please leave a message ~ Inception deployment test-Liu Chunlei 20170801 if you

  2022-06-01 06:34:30 Views: 205
• 

  PostgreSQL DBA (62)-PG 12 More progress reporting

  PostgreSQL 12 adds pg_stat_progress_cluster to count the progress of database activities and enhances the ease of use of the database. PG11 [xdb@localhost testdb] $ps

  2022-06-01 06:34:30 Views: 237
• 

  Toolkit installation

  Toolkit install toolkit package download wget percona.com/get/percona-toolkit.tar.gzwget percona.com/get/percona-toolkit

  2022-06-01 06:34:30 Views: 262
• 

  New MySQL Shell command line function in MySQL 5.7.12

  There are many exciting new features in the latest release of MySQL 5.7.12. For MySQL developers, the most exciting thing is the new MySQL Shell, which can be downloaded from http://dev.mysql.com/dow.

  2022-06-01 06:34:28 Views: 238
• 

  Oracle related commands

  Delete partition data from ORACLE partition table-delete all ALTER TABLE tableName DROP PARTITION partionName UPDATE GLOBAL INDEXES;-- clean data ALTE

  2022-06-01 06:34:27 Views: 218