Database Administrator

I. The hardware and system environment configurations meet the requirements, especially the memory, disk space, and network configurations. 2. Create an oracle account used for installation: In the X-WINDOWS interface: SCO Admin-Account Manager,

Shmmax-shared memory segment. It is recommended to set a larger value to reach the maximum SGA.Shmmin-the smallest shared memory segment.Shmmni-number of shared memory flags.Shmseg-Maximum number of memory segments that a process can allocate.Shmall-

Note: Because ORACLE 9I is 64-bit, the installed AIX platform must also be 64-bit. If it is not necessary to reinstall or use the Connection Library Function to change it to 64-bitTo change to 64 bit multi-processor mode:# Ln-sf/usr/lib/boot/unix_64/

First, I will explain my experiment environment: an Ultra 10, the system is Solaris 8, and Xmanager is used on XP. (My sub-memory is 256 MB, and it was used for one day and one night, so everyone should have a strong psychological preparation !) You

1. Start the instance (db2inst1 ):Db2start 2. Stop an instance (db2inst1 ):Db2stop 3. list all instances (db2inst1)Db2ilist 5. List the current instance:Db2 get instance 4. view the sample configuration file:Db2 get dbm cfg | more 5. Update the

1. Cold Standby (Cold Standby)Cold backup usually backs up production system databases on a regular basis and stores the backup data on tape, disk, and other media. The backed up data is usually in an inactive state and is activated only when the

1. Introduction Data Mining) it extracts information and knowledge hidden in a large number of incomplete, noisy, fuzzy, and random data that people do not know beforehand, but is potentially useful.. With the rapid development of information

I use binaryto install the file named mysql-standard-5.0.18-linux-i686-glibc23.tar.gz. [1] decompress the above file to a certain place and change the directory name of MySQL to mysql. The result should be as follows:/home/jiang/mysql [2] INSTALL

Routine database maintenance is an important responsibility of the system administrator. Its content mainly includes the following parts:I. Back up System DataThe backup and recovery mechanism of SYBASE ensures the possibility of re-retrieving data

With the wide application of Oracle in China, many users who used MS SQL7.0, Sysbase, Access and other databases have encountered the problem of data migration. In fact, there are many methods. Here we will introduce three methods.1. Use the

I. Optimized disk configuration Oracle is a disk I/O-intensive application. Make sure that you configure the disk and file system properly:Run the disk fragment program before creating a data file on the disk.To securely organize disk fragments, You

In large-scale project development, a project team usually carries out initial development in a small simulated environment. After the system is initially stable, move the development environment to the new system, finally, the old system is

In principle, the recycle bin is a data dictionary table that stores information about database objects dropped by users. the Drop object is not deleted by the database and will still occupy space. unless the user Purge manually or the database is

Generally, the full-text index in SQL server takes four steps:1) install the full text search full text Index Service;2) create a full text catalog full text index directory for the data table;3) perform the population operation of full text catalog

Network Configuration of the Oracle client: L after the Oralce product is installed, you must configure the network connection to connect to the database server or to replicate data between the two databases. L Oracle9i Net Service configuration

Word and Access are both components of Microsoft's Office software package. They are closely related. To facilitate your use, the following describes how to exchange Word and Access data: 1. Use Access Data in Word (1) Insert a Microsoft Access

Oracle databases are widely used in different regions. Therefore, professional Oracle staff must understand how network connections affect database performance. The TNS provided by Oracle allows communication in each database. The TNS server is

1. Operate the ACCESS database in DELPHI (Create A. mdb file and compress the database)The following code passes the test under WIN2K, D6, and MDAC2.6,The compiled program runs successfully in the second version of WIN98 without ACCESS. //

First, check the status of the system through some tools of the operating system, such as CPU, memory, swap, and disk utilization. Based on experience or compared with the normal status of the system, sometimes the system seems idle on the surface,

1. decode in cancel DB2 solution: Use case conditional expressions. Two syntax modes of case: (1) CASEWHEN condition THEN result 1ELSE result 2END (2) CASE expression 1WHEN expression 2 THEN result 1ELSE result 2END The above WHEN can be repeated