Database Administrator

I have never used Clob because I did not have this problem on the Forum. But how can I find a solution as quickly as possible to compete for points, because spring encapsulates orm tools, such as ibatis and hibernate, in spring. jar roughly flipped

DB2 auto-increment column test1. To change a column in a table to auto-increment, run the following command:Alter table alter column set not nullAlter table alter column set generated always as identity (start with 1, increment by 1)The above

Test environment: Install Oracle Enterprise Linux 5.8 64-bit Virtual Machine in VMware Workstation v9.0.2 Install software: jdk-7u40-linux-x64.rpm?apache-tomcat-7.0.53.tar.gz Installation instructions: Download jdk-7u40-linux-x64.rpmand apache-atat-7

Redis Introduction For details about redis installation, refer to here. For more information about redis usage, see here.How to Use the Redis C Client Redis c client Hiredis is widely used. The following describes it. 1. install and configure

The original database is Oracle11G 11.2.0.3 and runs on 64-bit WINDOWS. It uses RMAN for a backup and uploads the backup file to the/home/oracle/rmanbackup directory on the Linux server, prepare to recover to 64-bit LINUX. The procedure is as

There are many locks that can be learned, such as the lock granularity, lock mode, lock compatibility, and isolation level. However, how does one obtain the corresponding lock when running a statement? For example, if a select statement requires an

With the upgrade of the Oracle version, RMAN is also enhanced. RMAN in Oracle11g supports the use of different operating systems and different databases. For the compatibility of RMAN, refer: Oracle RMAN compatibility and FAQs between different

After installing the OEM grid control 11g, reinstall the agent on a monitoring server and the agent will not be able to work. The error "EMD upload error: uploadXMLFiles skipped" will be reported during the emctl upload check ". As follows: [Oracle @

TNS-12541: TNS: no listenerThis error is summarized in three cases.1. The local listener is not enabled2. The network from the server network to the client is disconnected3. configuration problems in Hosts [Oracle @ his1 admin] $ tnsping crds3db2

When the Rollback Recovery mode is enabled for the DB2 database, the log is changed from the cyclic log mode to the archive log mode, so that the user can restore the database or tablespace after the backup, roll back the transactions in the archive

For new users who are new to SQL databases, there are many questions about SQL versions, but they are too lazy to study them carefully. Although the problem is simple, the impact is not small. Version differences SQL Server 2000 has four editions:

BKJIA: You may have seen this message in some places. Facebook has developed a new social inbox, integrates email, instant messaging, text messages, text information, and Facebook site information. Most importantly, they need to store 135 billion

In fact, the indexes in MongoDB are similar to relational databases. They are designed to improve the efficiency of query and sorting, and the Implementation Principles are basically the same. The keys (fields) in the set can be common data types or

Index: You can use indexes to quickly access specific information in database tables. An index is a structure that sorts the values of one or more columns in a database table, for example, the name column of the employee table. If you want to search

1. Sybase Database Introduction  1. Version In 1984, Mark B. Hiffman and Robert Epstern created Sybase and launched Sybase database products in 1987. SYBASE has three major versions: one is the version running under the UNIX operating system, the

In Oracle9i, Oracle renamed the rollback segment and uses it as the log for revocation. In traditional operations, the rollback segment stores the revocation information of the exchange until the system sends a response or rollback statement. Manual

Before creating an SQL Server 2000 failover cluster, you must Configure Microsoft cluster service (MSC) and use the Cluster Administrator in Microsoft Windows NT4.0 or Windows 2000 to create at least one cluster disk resource. Before running the SQL

This document assumes that you have the permission to back up the database. That is to say, you are either a system administrator, db_owner, or backupadministrator. In addition, we also assume that your operating system provides the right to access

The Oracle database provides a default user operation environment. For example, the number of rows extracted from the database, the delimiter between columns, the maximum width of each line, and the default number of lines displayed on each page.

To improve the development efficiency, the company's development uses a large number of LINQ To SQL for development. Here we will share with you the problems encountered in the project. (That is, the problem of connecting to the conditional query