Database Administrator

Analysis of Jenkins proprietary user database encryption algorithm Jenkins access control includes security domain authentication and authorization policies. The security domain can be in three forms: Jenkins private user database, LDAP, and

MySQL copies the table data or table structure to the new table. How to copy data from a MySQL table to a new table. 1. MySQL copies the table structure and data to the new table Create table new_table SELECT * FROM old_table; 2. Only copy the

Configure RMAN RECOVERY CATALOG Oracle's RMAN configuration information is stored in the control file of the target database by default. You can also configure a recovery catalog server to store the information. The following is a comparison between

Issues with CDB User Creation and tablespace allocation in Oracle 12c Database In Oracle12c, the concept of database plug-in is added, that is, PDB, which allows a database container (CDB) to host multiple pluggable databases (PDB ). CDB is called

How to install Oracle 12c in RedHat Linux 6 Step 1: To install Oracle on RedHat Linux 6, you must install the corresponding software package before installing Oracle. In different operating system environments, the software package requirements are

Getting started with Linux: Installing phpMyAdmin on CentOS Problem: I am running a MySQL/MariaDB service on CentOS, and I want to use phpMyAdmin to manage databases through network interfaces. What is the best method for installing phpMyAdmin on

Oracle 11g backup-based rman duplicate Backup-based rman duplicate command to create standby databasePrerequisites: ensure the backup of the original database and archive is completely visible to the standby end,It is assumed that the storage

Basic concepts of Oracle's Business Intelligence Applications Configuration Manager, configurationmanagerOracle's Business Intelligence Applications Configuration Manager: BIACM Once the BIAPPS installation is completed, the newly introduced

MySQL connection is slow. Problem: Recently, the IP address is changed because the server has changed the network segment. After the change, the MySQL client is used to connect to the MySQL server and open the table on the client is very slow

Comparison of Oracle Database date filtering methods and oracle Performance When developing SQL statements, filtering date segments is a common problem. How can we efficiently filter out date segments? This article demonstrates through

Wet shoes yesterday... yesterdayAt the customer's requirement yesterday, several tables were added to the synchronization scope of ogg.I checked the dp process, the rep process, and confirmed that the two processes do not have these tables. Then I

Jdbc-mysql classic case and jdbc-mysql classic case Package com.exe clExport. util; import java. SQL. connection; import java. SQL. driverManager; import java. SQL. preparedStatement; import java. SQL. resultSet; import java. SQL. SQLException;/***

Two ways to improve performance using direct-path insert: direct-pathinsert1. Traditional serial insert There are two common insert methods: (1) insert into table_name values (....) (2) insert into target_table select * from source_table The above

Mysql database optimization summary and mysql database Summary I. Common Database optimization operations 1. The table design must conform to the three paradigm. 2. Add an appropriate index, which has a great impact on the query speed. You must add

Mysql encounters an error similar to "Every derived table must have its own alias ". Every derived table must have its own alias This statement means that each derived table must have its own Alias. This error occurs when multiple tables are queried.

SQL statement concise tutorial for linux --- DISTINCT, concise tutorial --- distinct SELECTThe command allows us to read all the data in one or more columns of a table. This will capture all the data, regardless of whether the data value

How to Write custom IP address algorithms and custom IP address Algorithms Through the IP address, you can see the algorithm rule, write it as a custom IP address, or convert the IP address to a custom IP address. It can also be used to encrypt

Rebuild the rollback tablespace and the rollback tablespace Author: iamlaosong The data in the rollback segment is not submitted due to unexpected reasons (power loss or manual killing), and a large amount of data retained in the rollback segment

High Performance MySQL Reading Notes (on), high performance mysqlHigh Performance MySQL is a classic book. From the application layer to the database to the hardware platform, all the tuning techniques and common problems are mentioned. Various

Mysql Tomcat C3p0 System Performance Tuning personal summary, System Information The application logic is to use c3p0 to query data in the database and return Json data over http.   1. the initial test result JMeter test result before optimization