The steps required to completely uninstall DB2 Windows on Windows and UNIX/Linux platforms to remove DB2 products from Windows operating systems. This task should be executed only when you no longer need an existing DB2 instance or database. Www.2cto.com if you are uninstalling the default copy of DB2 and you have othe
(VIC). You need to register to be a PartnerWorld member to access VIC. To access DB2 Course Material, after registering, select all courses by product under shortcuts at the bottom right of the VIC home page. You will then jump to a Web page titled "Product Selections". Follow the prompts to access the course materials related to the product.
Design and implementation Skills
Using
of parallelism on multiprocessor machines. With two new features in V8 load, they are particularly useful for the replacement of load as an insert, with two features: loading from the cursor and loading from the calling layer interface (CLI) application. Loading from a cursor This method can be used in the application's program code (via the Db2load API) or for DB2 scripts. Here is an example of the latter case: DECLARE staffcursor cursor Forselect *
for all 16, list system tables # db2 list tables for system 17, list user tables # db2 list tables for user 18. list specific user tables # db2 list tables for schema [user] 1 9. Create a new table (t1) with the same structure as a table (t2) in the database) # db2 create table t1 like t2 20. import data from one tabl
I. Preparations before installation
First, to install DB2 on Windows, create a db2admin account, add the account to the Administrator group, and grant the account necessary permissions. Second, DB2 installation source can view the IBM China (http://www.ibm.com/cn/) site obtained.
In addition, this article describes how to install DB2 using a convenient and respon
ODBCINI=/home/db2inst1/odbc.ini
Make sure that DJX_ODBC_LIBRARY_PATH and ODBCINI match with you in. the project specified in the bashrc file exactly matches. You may wonder why the same setting appears in two places, because the DB22 process does not read the environment variable setting information when connecting to the SQL Server, instead, we use db2dj. INI file. If you modify this file, you need to restart the database instance.
$db2stopforce
$db2start
Now you can create the S
statements. Chapter 3rd describes the SQL standards and principles to be followed in writing high-quality SQL statements. Chapter 4th describes SQL program queries; chapter 5th describes how to check the existence with two instances; Chapter 6th describes runstats for some statistical information; Chapter 7th describes the "15-step tuning method" for DB2 performance optimization ", it is known as the invaluable benefit of the
is enabled. 2. ORACLE databases should be rounded to different places, so that they should be rounded to the same place to meet user needs. In this way, DB2 is used as an ORACLE database.
Reporter: What are the points of integration between ORACLE and DB2?
Wang feipeng: in terms of design, temporary table design and index design all belong to logic design. There is no much difference in physical design.
maintained, therefore, placing them on different hard disks can make their read/write operations run in parallel without causing the disk to become a bottleneck. At the same time, it is better to select a database management tablespace (DMS) than the system management tablespace (SMS) because the read/write SMS needs to go through the operating system cache and then to the buffer pool, DMS that can use bare devices is not required. However, DMS is mo
creating indexes for the EMPNO and DEPTNO columns. If we include LASTNAME and SALARY in the index, we do not need to access the EMP table because all the data we need is already in the index. This technology can greatly improve performance because it reduces the number of I/O requests.
Remember: it is neither careful nor even impossible to make each query an index-only access. You should use this technique with caution to use SQL statements that are particularly tricky or important.
SQL coding
Db2 disables command line CLP for automatic submissionDb2 disables command line CLP for automatic submissionDb2 => update command options using C off -- temporarily disable automatic submissionDb2 => update command options using C on -- temporarily enable automatic submissionC: \ DB2> db2set-lr | find/I "db2option" DB2OPTIONSC: \ DB2> db2set DB2OPTIONS = + c+ C p
BKJIA exclusive Article: First of all, this article is not a detailed list of new features of DB2 9.7. I only list a list that is very important to DBAs or developers.
Online solution Modification
Please refer to Burt's article on online solution modification at: http://www.ibm.com/?works/data/library/techarticle/dm-0907db2outages/index.html.
CGTT-create a global temporary table
Now you can create a global temporary table without declaring it in each
Select into and insert into select table copy statements
Insert is a common statement in T-SQL. insert into table (field1, field2,...) values (value1, value2 ,...)ProgramDevelopment is indispensable. However, during the development and testing processes, we often encounter situations where table replication is required, such as copying some of the data fields of Table 1 to table 2 or copying the entire tab
CentOS 6.4 x64 DB2 Database InstallationSystem: CentOS 6.4 x64Database: db2-v10.1Preparation Environment stepsVi/etc/hosts # modifying the hosts host name is best if it is the same as the computer name. RebootYum Install Libaio Libaio-develfor the installation DB2 database Create corresponding account and user group permissionsGroupadd-g DB2IADM2Groupadd-g DB2FAD
changes. For example, the database manager can compress an index that contains a large number of duplicate keys by storing the record id rid of duplicate keys.
In an index with a public index key prefix, the database manager can compress data based on the similarity of the index key prefix.
Index compression uses the idle cycle of the CPU or the cycle when the CPU is waiting for IO to compress and decompress the index data. Therefore, the index compression technology increases the CPU burden of
Select multiple select implementation, select multiple select implementationHow to implement multiple drop-down boxes in html
The select tag has a multiple attribute and is set to multiple = "multiple". Press Ctrl to select multip
the Dynamicrules Bind option is used to Bind a package, this statement does not work. This statement is not under transaction control.
10. code page settingsSet character sets when creating databasesCreate database Example:Create database dbtest using codeset IBM-437 territory USYou can also set the code page of the entire database. In win2000/NT/xp, add the variable DB2CODEPAGE =
11. migration of data from earlier DB2 versions to later versionsFirs
Label:Connect reset should terminate the database connection with a commit action terminate should be able to terminate this client-initiated process and release resources Terminate is a command, in addition to disconnecting, it also terminates the CLP (command line processor) background process, which is the common db2bp.connect reset is the SQL statement quit Exit CLP, but the database connection is constantly open connect reset disconnects the database but does not exit the CLPterminate
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