NAV: SLTechnology News&Howtos > Database >

• 

  Oracle generates Excel files through Sqlplus combined with Shell scripts.

  First, the problem description received a task today, is to require every day through the SQL script to generate excel files, and automatically sent to the relevant personnel mailbox. I really haven't done this requirement. I've only done it before to generate HTML web page files through SQL scripts. As a result, I began to study again

  2022-06-01 07:00:48 Views: 247
• 

  Query the time of the last dml of a table in the last 5 days

  The select ORA_ROWSCN from tablename order by 1 desc-- ratio, such as XX--ORA_ROWSCN, is block-level by default, that is, all records in a block are an ORA

  2022-06-01 07:00:48 Views: 266
• 

  Centos 7.4 install Oracle 12c

  Oracle 12c download address: https://www.oracle.com/database/technologies/oracle-database-software-downloads.html

  2022-06-01 07:00:42 Views: 253
• 

  400m user phone numbers around the world are exposed and Facebook exposes huge security loopholes.

  According to foreign media reports on Sept. 5, there is a serious security breach in Facebook, a social networking platform. A database of hundreds of millions of phone numbers associated with Facebook accounts has been leaked online. Each record contains a user's Facebook ID and a connection to

  2022-06-01 07:00:39 Views: 221
• 

  What can mind mapping do?

  Mind mapping, also known as mind mapping, is an effective tool to express divergent thinking. It is simple but effective, and it is a practical thinking tool, so what is the role of mind mapping in our daily life? How to draw a mind map? Let's listen to the editor explain them one by one. The function of mind map: 1.

  2022-06-01 07:00:37 Views: 275
• 

  Compilation method of oracle 11g bbed tool and bbed download

  [oracle@oggtest1 ~] $cd $ORACLE_HOME/rdbms/ lib [oracle @ oggtest1 lib] $make-f ins_rdbms.mk $ORACLE_HO

  2022-06-01 07:00:36 Views: 234
• 

  6 ways to get the execution plan

  one。 Six ways to get an execution plan (detailed steps are explained in the comments section at the beginning of each example): 1. Explain plan for acquisition; 2. Set autotrace on; 3. Statistics_level=

  2022-06-01 07:00:36 Views: 252
• 

  Openfire deployment failed to connect to the database

  An error occurs when deploying openfire to connect to an external database because the openfire database does not have a data table structure and can synchronize the normal table structure with navicate. 2. Openfire forgot the default password to connect to openfire

  2022-06-01 07:00:30 Views: 223
• 

  MySQL:Fabric installation

  MySQL Fabric installation MySQL Fabric is a tool provided by Oracle to assist in ha\ sharding. Its basic architecture: with the help of Fabric, HA clusters and Sharing can be built.

  2022-06-01 07:00:30 Views: 273
• 

  Optimization experience of SQL stored procedure

  As reflected by their colleagues on the spot, their well-used XML export tool has been reporting errors recently, often reporting database connection timeouts, and checking the database found that there is already more than 100G of space. However, the stored procedure for exporting data only guides more than 1000 pieces of data at a time, so it is said that there is time to filter.

  2022-06-01 07:00:29 Views: 210
• 

  The latest question bank and answer arrangement of OCP certification 052 exam-71

  71 、 Which command is used to display files that no longer conform to the backup retention policy?A. C

  2022-06-01 07:00:24 Views: 233
• 

  Learun frame: sharpen a sword every ten years, and try your edge once.

  Time flies, nine years, for a newborn baby, it may just be a childish child, but for a company, it is enough to thrive into a teenager. The soft rapid development framework is based on the .NET platform. The research began nine years ago, and the framework is called "rapid development, rapid development."

  2022-06-01 07:00:24 Views: 245
• 

  Upgrade process of MySQL from version 5.6 to version 5.7

  MySQL upgrade process from version 5. 6 to version 5. 7 binary upgrade process 1. Here, since the original version is 5.6, I will not repeat the installation process of 5.6. the directory of the original database 5.6-basedir=/usr/local

  2022-06-01 07:00:20 Views: 296
• 

  [MySQL] delay correlation for performance optimization

  [background] the load alarm of a business database is abnormal, and the cpu usr reaches 30-40, which remains high. Use the tool to view the sql being executed in the database, and most of the top ones are: SELECT id, cu_id, name, info

  2022-06-01 07:00:20 Views: 203
• 

  Summary of single table size limits by MySQL MyISAM engine and InnoDB engine

  MyISAM engine: by default, the maximum size allowed for MyISAM tables created by MySQL is 4GB. You can use the SHOW TABLE STATUS statement or myisamchk-dv tbl_name to check the maximum size of the table. If

  2022-06-01 07:00:15 Views: 228
• 

  Analysis and understanding of Oracle database architecture and storage structure

  First, the personal metaphor of the Oracle architecture helps to understand: similar to the library, customers who go to the library (user processes and service processes, etc.) need to access materials and turn to librarians (examples) to enter the book partition (database) for information search. [if the metaphor is inappropriate, you are welcome to correct it. Please forgive me.

  2022-06-01 07:00:15 Views: 284
• 

  Weblogic configuration data source connects to Dameng database

  Dameng 7JDBC drivers are divided into Dm7JdbcDriver14, Dm7JdbcDriver15 and Dm7JdbcDriver16, which provide different hibernate corresponding to Jdk1.4, Jdk1.5 and Jdk1.6; Dameng 7, respectively.

  2022-06-01 07:00:14 Views: 302
• 

  Wordpress source code directory file structure

  * root directory * 1.index.php:wordpress core index file, that is, blog output file. 2.license.txt:WordPress GPL license file. 3.my-hack

  2022-06-01 07:00:14 Views: 255
• 

  Pt-archiver archived data

  The pt-archiver parameter indicates that pt-archiver is a component of the Percona-Toolkit toolset and is primarily a tool for archiving and purging MySQL table data. It can archive data to another table or to a file

  2022-06-01 07:00:14 Views: 212
• 

  Mysql Learning 2: chapter 2: mysql installation Startup and shutdown-pre-installation check

  1.1. Download installation package official address: www.mysql.com download version: Mysql Community Server, platform Linux-Generic x86-64bit. Download the installation package mysql 5.6mys

  2022-06-01 07:00:08 Views: 285