Database Administrator

Chinese garbled solution after MySQL is installed in CentOS After the MySQL program has been installed in CentOS recently, Chinese exceptions have been found during data import. The solutions can be sorted out for future reference: The procedure is

RMAN-00554 RMAN-04005 ORA-12528 When RMAN uses recover catalog to connect to the instance in nomount status, the following error message is displayed:RMAN-00554: initialization of internal recovery manager package failedRMAN-04005: error from target

Introduction to the use of with in Oracle subquery) Recently I have studied Oracle and want to improve the efficiency and ease of reading of statements I have written. Today's note is about subquery factors. Factor-based query may not necessarily

MySQL slow log query method The Method for Analyzing slow query logs using mysqldumpslow is introduced in the past. As the work progresses, another more useful method is found: To record slow logs to the mysql database. MySQL slow log query

Settings for automatic transaction submission by PL/SQL Developer Previously, the update table was used on a test machine. There was no commit or PL/SQL Developer. The next day, I checked the table on my computer and found that the record was not

Oracle11g OEM cannot connect to the database instance solution, oracle11goem My computer is 32-bitWin7 family EditionSystem, can such a system be installed with oracle? Yes! An error may occur. When installing oracle, everyone encounters different

Oracle returning into, oraclereturning The returning into statement is used to return the value after the statement is executed. The specific results before or after execution are returned, as described below: The returning into statement of the

Oracle11g remote login database, oracle11g Remote Login Oracle11g remote database login is simpler than any previous version,Nothing to do 1. OEM Login Enter the remote database oem url in the browser, and change the localhost or host name to the

MySQL sets a self-starting fault solution in Ubuntu, mysqlubuntu A fault solution for Setting Automatic startup for MySQL in Ubuntu Author: chszs, reprinted with note. Blog homepage: http://blog.csdn.net/chszs When MySQL is self-started, run the

Database tree query, database tree During this period of time, I worked with others to develop a new function in my internship company. I am mainly focusing on database operations! One of them is data validation, and this data exists in the database

Problem of CDB User Creation and tablespace allocation in Oracle 12c database, 12 ccdb In Oracle12c, the concept of database plug-in is added, that is, PDB, which allows a database container (CDB) to carry multiple plug-ins. Database pulling (PDB ).

Thinkphp association model and thinkphp Model Thinkphp comes with the associated model has_plugin. Use: Create ProductModel. class. php In the Model folder. The Code is as follows: use Think \ Model \ RelationModel; class ProductModel extends

MongoDB master-slave replication configuration, mongodb master-slave Replication The configuration in the mongoDB configuration file shows how to configure it. Here we use the configuration file to configure master/slave for master-slave replication:

Data room charging system storage process and charging system storage process Some people use the stored procedure to reduce the workload of code in the Process of charging the data center. What are the advantages and disadvantages of the stored

Teach you how to use Excel to generate SQL statements in batches and process a large amount of data. During system or project creation, we often encounter the following requirement: the user sends us some data and requires us to import the data to

"KewastUnPackStats (): bad magic 1 (0 xXXXXXXXXX, 0)" in Alert Logfile After Upgrading to 11.2.0.1 (document,Zookeeper "KewastUnPackStats (): bad magic 1 (0 xXXXXXXXXX, 0)" in Alert Logfile After Upgrading to 11.2.0.1 (Document ID 1227524.1)

Display and use the most comprehensive display_cursor execution plan, cursor1. explain and view the SQL text execution plan explain plan for select 3 + 5 from dual; select * from table (dbms_xplan.display ());Select * from table (dbms_xplan.display (

UPDATE... WHERE... order by... LIMIT statement, updatelimit Use UPDATE as little as possible in MySQL... WHERE... order... the LIMIT statement is because MySQL adds an X lock to all records that match the where condition. If multiple threads execute

MySQL Server password retrieval, mysql password retrieval I recently used a server in the courtyard, but I don't know the MySQL password. However, I have to find a solution by myself. The process is very simple! First, enter the following

Database design and database creation Everyone has a martial arts dream. We all envy Qiao Feng, who owns the 18 OPs of the dragon army, Zhang Wuji, who has the power and power of jiuyang, Ling wuchong, who has the power of yijinjing and exclusive