Database Administrator

Perform regular data statistics through the Oracle JOB package Environment: Oracle Database 10g Enterprise Edition Release 10.1.0.2.0 Stored Procedure: MyProc JOB Compilation: SQL> declare2 jobx number;3 begin4 sys. dbms_job.submit (job => jobx,5

PhpMyAdmin installation Configuration PhpMyAdmin is a MySQL graphical management tool. It is a MySQL client software developed in B/S mode using PHP. First, let me explain my directory structure: My MySQL, PHP, and Apache are all under drive D (PHP

Oracle UNDO monitoring Oracle 10 GB and later versions have a new feature, that is, automatic adjustment of the undo retention time, which greatly simplifies management. For the undo tablespace of autoextend on, the undo_retention parameter is set

An error occurred while installing the database using DBCA in Oracle. Oracle Installation: When DBCA is used for installation, the following error message is displayed: [Oracle @ standby ~] $ Dbca ...Local Time = Mon Jun 16 11:13:09 2014Elapsed Time

ORA-16014 and ORA-00312 troubleshooting When switching the role of the logical standby database switchover, the following error message is displayed in the log when the database is started; Primary> startupOracle instance started. Total System

Differences between Group By sorting principles of MySQL and SQLLite When we perform group by on the records of a table and do not explicitly use aggregate functions such as sum, min, and max, the group by sorting rules are as follows: As we all

Java oracle thin and oci Connection Methods for multi-database failover, thinoci Java oracle thin and oci Connection Methods for multi-database failover I. thin MethodThe URL isJdbc: oracle: thin: @ (DESCRIPTION = (LOAD_BALANCE = on)(ADDRESS =

OUI-67076: OracleHomeInventory was not able to create a lock file "in Unix, createSymptoms The command "opatch lsinventory" reports the error: OUI-67076: OracleHomeInventory was not able to create a lock file, probably due to a failed OPatch Session.

[Student information management system] system interface and background, Information Management System Interface The vbprogram interface information of the student information management system corresponds to the database information. When writing

Common ORACLE commands and oracle commands 1. How can I view all tables in the database? Select * from sys. user_tables; 2. How to connect to a database Sqlplus/nolog; conn sys/oracle as sysdba; 3. How to start a database Startup; 4. view the ORACLE

Calculation Method of nearby persons ----- using mysql script, ----- mysql Calculation Method for nearby persons: drop function if exists getDistance; DELIMITER $ create definer = 'root' @ 'localhost' FUNCTION 'getdistance '(lon1 float (10, 7 ), lat1

Mysql exports only the table structure or data. mysql exports the structure. Only data is imported without structure Mysqldump-t database name-uroot-p> xxx. SQL Only data is imported from the structure. Mysqldump -- opt-d database name-u-p>

Hadoop2.X/YARN environment setup-CentOS7.0 JDK configuration, centos7.0 Hadoop is written in Java and cannot use OpenJDK pre-installed in Linux. Therefore, JDK (1.6 or above) must be installed before hadoop is installed) Raw materials: the 32-bit

MySQL password change methods, yc sorting, mysqlyc Reprinted please indicate the source http://blog.csdn.net/yc7369 MySQL password change methods I have sorted out the following four methods to change the root password in MySQL, which may be helpful

Show databases, show tables, and describe table operations in postgresql, and describetable 1. It is equivalent to the show databases of mysql; Select datname from pg_database; 2. It is equivalent to the show tables of mysql; SELECT

Install and uninstall EM12C.Version: em12c 12.1.0.4 OS: redhat 5.7 x86_64bit (CentOS6.2, tested. At that time, due to glibc *. i686 package installation error, I gave up)==> After em12c is installed, you can skip this step. You can click here on the

Web permission database design, web permission Database CREATE TABLE account ( accid INT DEFAULT '0' NOT NULL, accCode CHAR(20), accName VARCHAR(30), PRIMARY KEY (accid) ) ENGINE=InnoDB DEFAULT

Ora1455 indicates how to handle ORA 1455 error when oracle exports data at 11g. This exception may occur because the exported User table may have an empty data table. First: View: SQL> show parameter deferred_segment_creation; If this parameter

What should I do if I forget the root password in Linux ?, Linux forgot root Password 1. First confirm that the server is in a secure state, that is, no one can connect to the MySQL database at will.Because, during the resetting of the MySQL root

Create a Neo4j cluster environment and a neo4j Cluster Introduction: Neo4j is currently the mainstream graph database. It also provides highly available cluster solutions. This article will try to build a highly available neo4j environment. 1. What