Database Administrator

This article summarizes the cross-Server connection method of SQL Server. 1. OPENDATASOURCE Example of using this statement to open a database in SQL: OPENDATASOURCE('SQLOLEDB','Data Source=TQDBSV001;User

SHMMAX Available physical memory Defines the maximum allowable size of one shared memory segment. the SHMMAX setting shoshould be large enough to hold the entire SGA in one shared memory segment. A low setting can cause creation of multiple shared

When you connect to a MySQL server, you should usually use a password. The password is not transmitted in plain text on the connection. All other information is transmitted as text that can be read by anyone. If you are worried about this, you can

This article introduces several major technologies and solutions for Oracle Database Remote replication and Remote Disaster Tolerance.Currently, the following technologies or solutions are available for remote replication and Disaster Tolerance of

I used to install Oracle in gentoo linux a long time ago. Take a note!1. OS: Gentoo-linux-2.6.23-rc5Oracle: Oracle Database 10g Release 2 (10.2.0.1.0) for Linux x86Http://www.oracle.com/technology/software/products/database/oracle10g/index.html

Solution 1:Log on to the MySQL Server using the MySQL Adminstrator GUI Tool, but the Server returns the error message Host '60-248-32-13.hinet-ip.hinet.net 'is not allowed to connect to thisMySQL serverThis is because of permission issues. The

When installing sqlserver, the installation file is often suspended, and sometimes the machine can be restarted, but sometimes it will always be prompted to restart, "A previous program installation has created a pending file operation on the

After reading many posts, I finally configured the MYSQL5 data source in JBOSS4.22! Step 1: Go to the next JDBC driver on the MySQL official website (Click here to download it ). Then copy the extracted file mysql-connector-java-5.0.7-bin.jar to %

XD, please come with me and let you install Oracle 10g under Fedora 7. Now I can prove that it is true and there is no problem, because I have already installed it. 1. First try the software preparation. Fedora 7 lacks a lot of things to install

Mysql dual-Machine backup method:In Unix, It is/etc/mysql/my. cnf or/MySQL user's home directory/my. cnf. In windows, it depends on the location of the my. ini file you called, and my location is under the mysql root directory. Setting method:Set

MySQL and Oracle conversion problem set: 1. mySQL does not support sequences. However, MySQL uses an auto-increment mechanism, and uses auto-increase in the ID column to replace sequences, when inserting SQL statements, enter Null in the position

If you encounter the following error when installing the 2000 patch: 1. During the installation process, the following steps show: A. Restart the machine and install it again. If the error persists, follow these steps: B. Enter regedit in start->

The test concluded that FreeBSD currently lacks a stable and efficient Filesystem for MySQL MyISAM. First, explain the current environment. There are two Tyan servers, Dual Quad Core and 12 gb ram (6*2 GB) attached to two 73 gb scsi hard disks, the

I. Basic installation $ Tar zxvf mysql-3.23.58.tar.gz $ Mysql-3.23.58 cd $./Configure -- prefix =/usr/local/mysql -- sysconfdir =/etc -- localstatedir =/var/lib/mysql $ Make $ Make install # Prefix =/usr/local/mysql target directory for mysql

If PLS_INTEGER is used, Oracle uses the native machine algorithm. All other numeric data types Use the C Language Algorithm Library like the NUMBER data type The result is that the PLS_INTEGER value is much faster than the NUMBER integer. In

I have written an article titled Oracle PL/SQL "Art Appreciation" from if to then. Address: What should I pay attention to when the range is extended to each parallel IF condition? When the condition is parallel, can IF be unordered? Let's take a

1. HugePages description  1.1 HugePages Introduction HugePages is afeature integrated into the Linux kernel with release 2.6. This featurebasically provides the alternative to the 4 K page size (16 Kfor IA64) providing bigger pages.   There are some

The SQL statement is as follows: Select sequence_name from user_sequences where sequence_name = 'parameter' Note that the Oracle sequence parameter must be converted to uppercase/lowercase. Example: (this is implemented using the simple framework) //

Observe the Oracle database performance. The awr feature provided by Oracle provides us with a nearly perfect solution. With awr features, we can extract awr reports from the database at any time. However, we need to provide some interactive

APIS involved in this article: Hadoop/HDFS: http://hadoop.apache.org/common/docs/current/api/ HBase: http://hbase.apache.org/apidocs/index.html? Overview-summary.html Begin!   When setting the startRowKey and endRowKey of scan, you often need to add