Database Administrator

The following describes how to install the MySQL RPM package in the Linux operating system! First, check whether MySQL is installed in Linux. Rpm-q mysql *; Delete if any Rpm-e -- nodpes mysql *; Then install MySQL Rpm-ivh MySQL-server-5.0.22-0

This test requires you to build an Oracle 10gR2 on The SUSE Linux Enterprise 10 platform. After installing the Oracle 10gR2 based on the general program, you can log on to the OEM and find that there is no problem with the Chinese display of the

Because of work requirements, you need to install another Oracle instance in a Linux operating system. After receiving help from many netizens, I finally solved the following problems: 1. install a new instanceLog On with the Linux Account Oracle,

1. Modify the Oracle system configuration file/etc/oratab/Etc/oratab format: SID: ORACLE_HOME: AUTOSet the AUTO domain to Y (uppercase). Only in this way can dbstart and dbshut of oracle be used. Mine is:Ora9i:/home/oracle/ora/products/9.2.0: Y2.

Environment: 1. Install CentOS 5.0When installing CentOs5.0, if the server is only running the Oracle database, you must install gnome, development kit, and Legacy development kits when installing CentOs5.0. You can choose not to install other

1. Because orcale10 does not support RHEL5, you need to change/etc/redhat_real.pdf to Red Hat Enterprise Linux Server release 5 (Tikanga) to Red Hat Enterprise Linux Server release 4 (Tikanga) 2. Modify the/etc/hosts file and change 127.0.0.1 to

After Linux is installed, mysql is always waiting and cannot be started. Processing: Check the MYSQL Log (/var/lib/mysql/user. err), the most common case is permission issues. That is to say, after the machine is installed and there are no mysql

How can I improve the efficiency of MySQL Data loading? Batch loading is faster than single-row loading. After each record is loaded, you do not need to refresh the index cache. You can refresh the index only after batch record loading. Loading a

1. Create a stored procedure 1. Basic Syntax: Create procedure sp_name ()Begin.........End 2. parameter transfer Ii. Call the Stored Procedure 1. Basic Syntax: call sp_name ()Note: The stored procedure name must be enclosed in parentheses, even

1. Open php. ini. Find the upload_max_filesize, memory_limit, and post_max_size parameters! (By default, php only allows the maximum size of data to be uploaded to 2 MB, that is, 2048KB. The maximum memory usage of memory_limit is only 128 MB, the

MySQL 5.0.18 running server is installed in red-flag Linux. You can run the client in win2003 (graphical interface MYSQL-FRONT) to log on to the server, the error is: ERROR 1130: Host '10. 3.69.239 'is not allowed to connect to this MySQL server

My system is Ubuntu 8.04 on a virtual machine. 1. Go to http://www.postgresql.org where the next postgreSQL core 8.3. 2. Run the tar-xvf postgreSQL-8.3.3.tar.bz2 to decompress 3. Go to the decompressed folder and run the./configure command to

Install MySQL in Ubuntu in three ways: 1. install sudo apt-get install mysql-server from the Internet. After the environment variables have been automatically configured, you can directly use the mysql command. 2. Install the release package. Take

It is more practical to sort out some MySQL Chinese garbled solutions. When MySQL is used, Chinese characters are inserted, and garbled characters are often inserted. Are all Chinese characters used? . Most of the reasons for this are Character Set

Today, the company has installed Oracle 10g rac for linux on its own. The two database versions are oracle 10.2.0.1. Record the process of upgrading the database to 10.2.0.4 by patching 1. First download the patch 10204 for linux with the patch 68101

I encountered a lot of trouble in learning MySQL. In order to prevent beginners from having the same problem, I spent some time writing this article. I am also a newbie and hope to give you more advice !! Before installing MySQL, let's take a look

The code tree of mysql proxy has been migrated to lauchpad and bazaar is used for version management. According to some documents, the latest mysql proxy is successfully compiled and installed under CentOS 5.2. The procedure record is as follows (it

I came to the company to start my computer today. On the login page, my computer reported that a service failed to start. My computer had no new software installed and there was no problem on Saturday. Why did I suddenly report this error? So I went

1. nvl Function The nvl function converts a null value to an actual value. The data type can be date, number, character, and must match: for example:Nvl (commision, 0) Nvl (hiredate, '01-JAN-87 ') Nvl (job_id, 'no manager ') Nvl (to_char (job_id),

Recently, we have used PostgreSQL for backend databases in some projects. Due to the need to control the client connection usage type and connections, PgBouncer is used for implementation. The PgBouncer-related basic documentation pgsqldb has many