db2 udb

In daily DB2 O M, we often encounter slow execution of Several SQL statements, but the cpu and memory usage of the database server is not high, similar problems are basically caused by locks, sorting, and other reasons. Next we will analyze how to quickly locate the lock wait problem from an instance and lock the table. I. Lock information in logs When you find a large amount of sqlcode reports 911 information in the database LOG DB2DIAG. LOG, there

Article Title: Configure DB2 on SUSELinuxServer. Linux is a technology channel of the IT lab in China. Includes basic categories such as desktop applications, Linux system management, kernel research, embedded systems, and open source. This article first examines DB2 UDB for Linux®, UNIX®And Windows®IBM DB2 in®Unive

Brief introduction When you want to ensure that enterprise applications built with IBM db2®universal database™ (DB2 UDB) and borland® tools (such as delphi™, c++builder™, or kylix™) have the best performance, programmers can take advantage of the DB2 Optimizer's ability to Force to handle even "difficult" SQL statemen

Label:Go from DB2 script House: http://www.jb51.net/article/20497.html1. Open the Command Line window#db2cmd2. Open the control center# Db2cmd DB2CC3. Open the Command editorDb2cmd Db2ce===== Operation Database Command =====4. Start the DB instance#db2start5. Stop the DB instance#db2stopIf you cannot stop the database due to the active connection, execute DB2 force application before running db2stop all to/

Recently has been doing database optimization this business, found themselves a lot of DB2 commands are forgotten, and even useless, and sometimes become a bottleneck in the efficiency of the work, 工欲善其事, its prerequisite, so did the following summary:1. Open the Command Line window#db2cmd2. Open the control center# Db2cmd DB2CC3. Open the Command editorDb2cmd Db2ce===== Operation Database Command =====4. Start the DB instance#db2start5. Stop the DB i

DB2 Stored Procedure attribute description, db2 stored procedure description ProcedureName: name of the stored procedure. It cannot exist in the same database mode. Stored Procedure with the same name and number of parameters, even if the parameter type is different (In | out | inout paramName dataType ,...) : Input parameters In: input parameter, out: output parameter, inout: As input and output parameter

they cannot be used as partition keys. Collocated Collocation is used to place rows in different tables in the same database partition that contain relevant data. The parallel table enables DB2 to use the connection policy more effectively. You may find that as a response to a specific query, two or more tables provide data frequently. In this case, you want the data in such a table to be as close as possible. In an environment where a database is ph

The STRIP environment product of the string scalar function added by DB2 V9: DB2 UDB platform: Linux Unix Windows Version: V9 V9.5 the problem starts from DB2 V9 and a new string scalar function STRIP is added, it is convenient for developers to process strings. Note: To display spaces, use # to indicate the starting a

This article introduces the Data Types of Oracle and DB2, and describes in detail, it should be noted that DATE in Oracle contains year, month, day, hour, minute, second, it does not correspond to the DATE in DB2/400. The DATE in DB2/400 only includes the year, month, and day. The TIME type includes the TIME, minute, and second, therefore, the date and time types

The following articles mainly introduce the coexistence of DB2 databases and describe the configuration of tables for the occurrence of the coexistence of DB2 databases. The following is a detailed description of the main content of this article, I hope you will have a better understanding of it after browsing. DB2 database Synchronization Collocation is used to

Label:=========================oracle VS db2==================================== This article transferred from: http://www.bitscn.com/oracle/install/200604/16541.htmlFirst, the following table describes the relationship between Oracle and db2/400 data types, is a one-to-many relationship, the specific use of the corresponding relationship, the specific problems should be analyzed.

This article mainly describes the DB2 materialized query table, and also introduces MQT, summary table (summary), and staging table. To better describe it, we use some practical examples to show how to create and use materialized query tables. The definition of a materialized query table (MQT) is based on the results of one query. MQT can significantly improve query performance. This section describes MQT, summary table, and staging tables, and provid

1. Write an SQL script Compile the SQL Execution script that DB2 needs to execute and place it on the AIX server. The following is an example of crontest. SQL: ConnectToTemUserDb2admin using db2admin; Call P_TEST (); 2. Write the sh execution File Write the sh file and place it on the AIX server. Modify the sh file to be executable. Example: crontest. sh: PATH =/usr/bin:/etc:/usr/sbin:/usr/ucb: $ HOME/bin:/usr/bin/X11:/sbin :. Export PATH I

implement column-level encryption for Employee Social Security numbers (ssn. In the master table emp and slave table empProject, ssn is stored in encrypted form.-- Define Tables and Indexes for encrypted dataCreate table emp (ssn varchar (48) for bit data,Name varchar (48 ));Create unique index idxEmp on emp (ssn) includes (name );Create table empProject (ssn varchar (48) for bit data,ProjectName varchar (48 ));Create index idxEmpPrj on empProject (ssn );-- Add some dataSet encryption password

After the system crashes, use the DB2 transaction log to restore the database. How many times have you encountered the error message "sql0946c the transaction log for the database is full "? When trying your best to solve this problem, do you have to stop and think about why transaction logs and transaction logging services exist? If there is no transaction, when multiple users and applications interact with a database at the same time, data w

After the system crashes, use the DB2 transaction log to recover the database. How many times have you encountered the error message "sql0946c The transaction log for the"? When trying to solve the problem, do you stop to think about the following two questions: 1. Why the transaction log exists; 2. What is the purpose of the transaction log logging service? Without transactions, multiple users and applications that interact with a database at the sam