Hello, everyone, today I met a federated query of two tables between two databases in DB2I know there are dblink in Oracle, but I don't know what to do with the two database federated queries of DB2.I looked for something similar toFor example, two databases: DB1,DB2User namePasswordSELECT * from DB1. User name. password, DB2
This article mainly describes the new features of DB2 V9.7 partitioned index to improve the actual operational performance of large databases, including how to correctly use and manage partition indexes, there are also the actual steps to improve the performance of large databases by using partition indexes.
Introduction
Partition index partitioned index) is a ne
tablespaces, meaning high synchronous read percentages, usually higher buffer pool hit ratios, and lower physical I/O rates. For each tablespace, note that the prefetch size is a multiple of the extent size. If necessary, you can modify the prefetch size of tablespace.Display tablespace information: DB2 "list tablespaces show detail"Display containers information: DB2
The following articles mainly explain the three suggestions of the DB2 database design. If you are interested in the three suggestions of the DB2 database design, you can click to view the following articles. The following is a detailed description of the articles. I hope you can learn from them.
When deploying databases in an enterprise, we first need to install
Cataloguing
Db2 uncatalog database
8. Test the remote database connection.
Db2 connect to user using
9. Any user can set the default mode for a specific database connection by setting the Current Schema special register. The initial default value is the permission ID of the Current session user.
Set schema =
This statement can be used interactively or in applications. If the Dynamicrules Bind option is use
The following article describes how DB2 implements the functions of Oracle databases and summarizes its experience in actual operations, in this article, I will share with you some tips and experiences on implementing certain Oracle functions in DB2 ......
In practical applications, you may often encounter how to implement certain Oracle functions in
The following article describes how to use optimizer updates to execute plans in DB2 databases, we all know that in a DB2 database, the optimizer is generally used to analyze SQL statements and generate an Access Plan that is considered optimal ).
The DB2 optimizer is actually a set of standard rules. Generally, we onl
Tags: windows7 databases data mys base mysql5.5 font Choice LogLi Wu:Heng Learn to think together, honouring teachers save Thanksgiving. Leaf See root three return to one, rivers the same oneness.Meekness Conscience Lord, willing to do without regrets to the most bitter. Reading exercises to keep the body and mind, sincere advice and the line and cherish.
Data,
data, Lingen on the data. You must be cautious about operating the database. Giv
The following articles mainly describe Common Errors of DB2 databases and the correct solutions. If you are curious about Common Errors of DB2 databases and the correct solutions, the following articles will unveil its mysteries. I hope you will gain some benefits after browsing.
Document category: Database
1. Error 4
: The Database Configuration Parameter buffpage only applies to the buffer pool with the buffer size set to-1.
26. How to Use in/not in without using the select clause when multiple fields exist?Select * From tabschema. tabname where (cola, COLB, colc) [not] In (valuea1, valueb1, valuec1), (valuea2, valueb2, valuec2 ),... (valuean, valuebn, valuecn ))
27. view the applications currently connected to the databaseDB2 list application [show detail]
Database creation backup and restoration for DB2 Databases
Follow these steps to create a database in the Db2 environment:
1. When su-db2inst is missing, an error will occur;
2. db2 enters the db2 command line mode;
3. create database pb_db on/home/db2inst using codeset gbk
It is very important to develop a database application and select a good database. This article compares three types of databases: SQL Server, Oracle, and DB2. It provides some reference for you to select a database.
Openness
SQL Server
It can only run on windows without any openness. The stability of the operating system is very important to the database. The Windows9x series products focus on deskto
the length of the row.
First, view the specific information of the tablespace:
$ Db2 list tablespaces show detail
Tablespace id = 9
Name = TPMS
Type = system management space
Content = any data
Status = 0x0000
Explanation:
Normal
Total pages = 2084
Available pages = 2084
Used pages = 2084
Unused pages = not applicable
High water mark (PAGE) = not applicable
Page size (in bytes) = 32768
Extended data bloc
Tags: Database SQL Server C #C # Connecting code sets for class six databasesThis article lists the program source code and points to note for C # connections to access, SQL Server, Oracle, MySQL, DB2, and Sybase six different databases.1.c# Connecting to accessProgram code:CodeUsing system.data;usingSystem.Data.OleDb;..String strconnection= "provider=microsoft.jet.oledb.4.0;";Strconnection+[email protected
The multi-partition management of DB2 is usually a little challenging for everyone. However, in many cases, the management of multi-partition and single-partition is not very different. The following summarizes the common operation management commands:Start the database node of the specified partition: db2start dbpartitionnum DBNODENUM in daily operations, we need to determine the number of the current connection node. The following is how to check th
This article introduces you to the correct procedures for cross-platform database migration of DB2 databases, as well as the considerations we need to pay attention to when implementing the actual migration of cross-platform databases of IBM DB2.
Suppose you are the administrator of a
For production purposes, install the DB2 database on an IBM X3850 server. The following describes the procedure.
Software and Hardware System Configuration:
Operating System: SUSE enterprise 10 linux (64bit)
Hardware configuration: 32 GB memory
Database software: DB2 V9.7 (64bit)
I. Check the required environment and software packages
Before installing DB2
Guidance:InDB2 databaseWe often encounterCatalogMany people are not very familiar with this word, and catalog is difficult to understand. Specifically, cataloguing includes cataloguing nodes and cataloguing databases. If you want to understand the cataloguing, let me briefly introduce the architecture of the DB2 database. The biggest concept in the DB2 database i
This article mainly introduces how to optimize the backup performance of DB2 databases. We all know that when performing backup operations, the DB2 database automatically selects the best value for the number of buffers, buffer size, and parallelism settings. These values depend on the number of available utility heap memory, number of available processors, and d
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