Database Administrator

Database Administrators familiar with SQL server 2000 know that DTS can import and export data. In fact, we can also use Transact-SQL statements to import and export data. In a Transact-SQL statement, we mainly use the OpenDataSource function and

MyIsam is relatively simple to publish, just copy all the files in the library. The procedure of copying Innodb is similar to that of MyIsam, except that the table content in the Innodb Engine no longer exists in the same database directory (MyIsam

Environment: ORCLE 10GAn SQL statement is displayed separately. How to handle exceptions.1) Standard PL/SQL blocks containing Exception HandlingDECLARENo_Detail_record EXCEPTION;PRAGMA EXCEPTION_INIT(No_Detail_record,-20000 );V_nDetailCount

First, you must understand that the physical structure of the database is determined by the operating system files of the database. Each Oracle database consists of three types of files: data files, log files, and control files. Database files

I.Introduction Problems Help me install a 10 Gb Oracle on CentOS. As a result, my friend's CentOS version is 6.2, the latest version, but it is basically the same on Linux, so follow the previous steps, quick operations result in N errors that have

The CASE expression is added to SQL in Oracle8i, and Oracle9i extends it so that the CASE expression and CASE statement can be used in PL/SQL. CASE expression for value matchingThe CASE expression is more flexible than the DECODE function. In its

Oracle has provided the Flashback Query function based on rollback segments starting from 9i, which can be used to restore wrong DML operations. in Oracle 10 Gb, the flash-back query has been greatly improved. It is no longer limited to flash-back

1. Download MongoDB, here the download version is: mongodb-linux-i686-1.8.1.tgz.tar. Http://fastdl.mongodb.org/linux/mongodb-linux-i686-1.8.1.tgz Related reading: Install and start MongoDB in Linux Advanced query example in MongoDB MongoDB Java API

Overview To install Oracle 10.2.0.5, you must first install 10.2.0.1. The installation sequence is 10.2.0.1-> 10.2.0.5-> EM patch-> Create an instance-> fix EM Chinese garbled characters-> Create auto-start 1. Install the rpm package Nano/v. sh Copy

After a whim, I suddenly wanted to install Oracle10g and Oracle11g under OEL6. The two versions coexist to facilitate learning and experiment. This installation process is not difficult, if you have installed 10g and 11g respectively, I believe the

Oracle9i starts to provide a flashback query so that consistent data at a time point in the past can be found as needed, which is implemented through Undo. This function has a lot of limitations, that is, the undo of related transactions cannot be

First of all to ensure that the correct installation of mongodb, Installation Reference: http://docs.mongodb.org/manual/tutorial/install-mongodb-on-debian-or-Ubuntu-linux Then download the mongodb driver of nodejs Npm install mongodb Compile a test

Accidentally forgot the Database Password, In this case, you only need to add Skip-grant-tables Then restart the service and log on to the database again. At this time, I successfully logged on to the data, but accidentally deleted all the users and

Some people on the Internet have provided the best optimization ideas: 1. Extract the records that meet the conditions in the large table to generate a temporary table. 2. Associate the small temporary table with another small table. No matter

Note: The Oracle version is 10 GB and the Linux version is RedHat Enterprise Linux 5.6. 1. Check whether the system has installed the file packages required by oracle. Rpm-q gcc make binutils openmotif setarch compat-db compat-gcc-c ++

I. Overview of bacula 1. bacula ComponentsBacula is known as the best backup and restoration software in open-source software. It provides a backup solution for enterprise-level clients/servers, allowing you to manage file backup, recovery, and

Html code Android 2.3.3 Eclipse Version: 3.7.0 LogCat LogCat error message:Java code 02-13 09:21:35.030: WARN/dalvikvm (17173): Threadid =19: Thread exiting with uncaught exception (group =Zero x 40015560) 02-13 09:21:35.130:

On the Internet, I often ask what is the maximum length of Oracle varchar2? In fact, this name is not accurate. varchar2 is used in both oracle SQL and pl/SQL. oracle points out in the SQL reference manual and pl/SQL reference manual: the maximum

Definition of implicit commit It is also known as automatic submission, that is, the process of executing the commit statement is not displayed, and the operations in the session are automatically submitted to the database. Implicit submission 1.

Oracle Server entry and oracle management routineI. Common oracle database management toolsOracle Universal Installer (OUI): used to install, upgrade, or delete Software ComponentsOracle Database Configuration Assistant (DBCA): a graphical user