Oracle

Oracle Decode () functions and case statements are all common use, so what is the difference between them? Here's a detailed description of The difference between the Oracle Decode () function and the case statement for your reference. First, give

SAP selects IBM's viper as a database of small users The two companies strengthened their battle against Oracle. IBM and SAP AG jointly announced in the middle of this month that IBM's next-generation DB2 database would be optimized as database

oracle| Data | database | Cursor SQL is the language used to access the Oracle database, Pl/sql expands and strengthens the functionality of SQL, while introducing stronger program logic. Pl/sql supports DML commands and SQL transaction control

oracle| Backup | strategy | recovery | data | database SummaryThe recovery of lost database files depends to a large extent on the backup strategy used. Based on the flexibility of recovery, this paper discusses the backup and recovery strategy of

Oracle for most security software pilot programs, it is difficult to explicitly calculate the return on investment. It's like going back to calculating the benefits of some of the things that have not happened. However, the Identity Management pilot

oracle| Data | database Summary: Oracle relational database system is widely used for its excellent performance, and ensuring database security is an important part of database management. On the basis of summarizing the security management of

Oracle Rollback segment management is always a difficult problem in Oracle database management, this paper introduces the concept, usage, planning and problem solving of Oracle rollback segment through an example. Rollback Segment Overview The

oracle| problems to start Oracle common problem Analysis (2003-10-1) This article is from "Network Administrator World" 2003 phase 10th "Fault Diagnosis" column The startup and shutdown of instances and databases is one of the important

Oracle Learn the use of Oracle SQL Loader One: Features of SQL loader Oracle has a number of tools that can be used to migrate, backup, and restore data. But each tool has its own characteristics. For example, exp and IMP can export and export data

Oracle [Oracle] How to use the Open Source Tools to implement Your Own Tpc-c Author: fenng Date: Mar (v0.13) Site: Http://www.dbanotes.net Introduction to this article Describes how to use open source tools to implement TPC-C in an Oracle

oracle| Comparison | data | data type Original Author: James Koopmann The format of the timestamp data is the same as the date data. Note that the TO_CHAR function supports date and timestamp, but Trunc does not support timestamp data types. This

Oracle First week: Flash back query Get a movie instead of a picture: Flash back version query No setting required to immediately recognize all changes to a row In the Oracle9i Database, we saw that it introduced a "time Machine" in the form of

1, read-only table space recovery By default, Rman does not restore a read-only data file when performing a full recovery database restore operation, even if a read-only data file is lost. To restore a read-only data file during a full recovery,

Install the example under P10404530_112030_linux-x86-64_6of7.zip decompression. Modify the software path for dbhome_1. Install the data, you can take the snapshot operation! Delete the installation

In a bug change process, the database error, but a look at the back of the console, and did not burst the previous specific database error reasons, butSqlerrorcodes loaded: [DB2, Derby, H2, HSQL, Informix, Ms-sql, MySQL, Oracle, PostgreSQL,

Reason:Oracle needs to install a client to allow third-party tools to connect through the OCI (Oracle call Interface).Solution:1. Go to Oracle website to download instant Client 11, or2. Unzip directly to the appropriate directory, such as

Case has two formats. Simple case function and case search function.--Simple Case function Case Sex When ' 1 ' Then ' men ' When ' 2 ' then ' women ' Else ' other ' END --case search function case If sex = ' 1 ' Then ' man ' When sex = ' 2 '

The new features of In-database archiving are introduced in Oracle Database 12c, which allows users to archive data by marking data rows on the table as inactive inactive. These inactive data rows can be compressed into one optimization and are not

DB file Parallel readWebsite Explanation:This happens during recovery. It can also happen during buffer prefetching, as an optimization (rather than performing multiple single-block reads). Database blocks, need to being changed as part of recovery

Before looking at this article, make sure that you understand the concept of Oracle transactions and locks as it is, but do not understand, refer to the consistency and atomicity of database transactions and Oracle TM and TX Locks1. Commit a