Many technicians can easily discuss the details of DB2 technology and confidently talk about query parallelism, data compression, WebSphere MQ integration, large object management, JDBC and ado.net drivers, data sharing on mainframe Parallel Sysplex, DB2 for Lin UX, Unix, and Windows (LUW) multidimensional clusters, and so on. But what happens if the person who talks is a member of the management? The main
In DB2, when the days of God are gone, SYSADM has clearly defined the division of roles.
With database-level SECADM, DBADM assigned to SYSADM will certainly be removed;
SECADM can now be allocated to ROLE and GROUP;
SECADM can now grant/cancel database and object authentication;
DBADM can be created in this way, so it cannot see data or perform authorization/Revoke authorization;
DBADM cannot obtain indirect permissions;
New permissions are created,
EXPLAIN as a DB2 query plan, generally need to open their own, but generally run DB2-TVF EXPLAIN. DDL but I've been running a lot of times and it's been wrong.
Because it is not in the same directory, there will be an error.
It should be written like this: DB2-TVF "C:\Progr
Label:EXPLAIN as a DB2 query plan, generally need to open their own, but generally run DB2-TVF EXPLAIN. DDL but I've been running a lot of times and it's been wrong.Because it is not in the same directory, there will be an error.It should be written like this: DB2-TVF "C:\Program Files (x86) \ibm\sqllib\misc\
DB2 does not exist in the explain table of the SQL Execution Plan by default. Therefore, you need to create an explain table as needed during use. How can you create it? In fact, DB2 still provides a variety of methods for you to use. The first method is to use the script EXPLAIN
DB2 The explain table for the SQL execution plan does not exist by default, open DB2 command line, CD to the following directory
C:\Program Files (x86) \ibm\sqllib\misc>lsDb2autobackuppolicy.xsd db2evmonpkgcache.xsd db2monroutines.xsd db2schemaannotation.xsl Db2adminV8.exe Db2uext2.v2Db2autoreorgpolicy.xsd db2evmonuow.xsd db2optprofile.xsd
IBM's DB2 V9.5 introduced and perfected the workload management (workload MANAGEMENT) feature, allowing us to gain insight into the system's performance and better control of resources and capabilities. In DB2 V9.5, the newly introduced Workload management feature (WLM) can help you identify, manage, and monitor the workload of your data server. This article will focus on the new features of
Analyze the causes of full DB2 Activity logs and solutions to full DB2 logs, db2 logs
Log usage
Displays the usage of logs under concurrent transaction conditions
There are three concurrent programs: Process 1, Process 2, and Process 3. Each program has two transactions. Blue blocks represent SQL statements, red blocks represent commit operations, and green bloc
Tags: database DB2DB2 Zostalking about-DB2 LUWVSDB2 ZosOverview:you may have DB2 LUW knows a lot, but little is known about DB2 Zos(Big Machine operating system) because IBM 's internal data has always been relatively closed, especially for products we rarely see on the market, such as Zos Operating system, generally in the bank's internal staff and IBM employee
Http://hi.baidu.com/wader2006/blog/item/78406b60b51f8b47ebf8f8f0.html
DB2 Common Command Set----DB2 maintenance 2007-09-09 10:10 in the DB2 development process, the whole development process also has a very important part of the work is the maintenance of the database, for the maintenance of a huge information system is very necessary; Leave a simple maintenance
, which is basically a superset of ODBC). This means that when a failure occurs, you may get a CLI error message instead of a SQLCODE. This also means that if you suspect a CLI bug somewhere, you can try submitting SQL to Command Center via the CLP. If the CLP section is successful and the Command Center section is unsuccessful, then the problem is clearly part of the CLI. In DB2, this is important because all ODBC, Java, JDBC, and SQLJ accesses to
Before you start
About this series
Are you considering participating in the DB2 SQL Procedure Developer certification exam (exam 735)? If so, you come to the right place. These six DB2 certifications prepare tutorials to discuss all the basics of the topics you need to know before taking an exam. Even if you're not going to take the certification exams right away, these tutorials are also good materials t
explain their effects and when they might run. Although the manual DB2 the 2nd chapter of the UDB V8 administration guide-performance Records Most important processes, the list is incomplete. By reading this article, you will understand each DB2 process, and when you see those processes, you will begin to understand what DB2
current instance is a 32-bit instance or a 64-bit instance. We'll explain this in the next section. 32-bit architecture and addressable memory in 64-bit architecturesIf you have a 64-bit DB2 instance, it means that DB2 is using a 64-bit memory architecture. In this architecture, for all platforms, the address space for each process is 2 64, or 18,446,744,073 GB
A bad SQL statement will completely destroy your entire day. I have seen more than once a relatively simple SQL statement mess up a well-adjusted database and machine. For many of these statements, daily (or in files) without the DB2 UDB configuration parameters can correct high costs caused by incorrect SQL statements.
Worse, DBAs are often constrained by the inability to change SQL (probably because it is provided by application vendors, such as S
Author: gnuhpcSource: http://www.cnblogs.com/gnuhpc/
1. Level correspondence• Environment variables at the operating system level• The DB2 profile registry variables at the operating system and instance levels• The Database Manager (DBM) configuration file at the instance level• The Database (db) configuration file at the database levelThe DB2 environment consists of the following parts:1)
This time, our DB2 is deployed on Windows. Windows has a client that is called a graphical interface. But it does not seem to work well, we have some problems, let's solve it.
First, add a database instance:
Instances of DB2 are independent of each other, and instances can be considered as containers for databases. When the default DB2 is installed, it builds an
incorrect SQL statements.
Worse, DBAs are often constrained by the inability to change SQL (probably because it is provided by application vendors, such as SAP, lelesoft, or Siebel ). This leaves only three steps for DBA:
1. change or add an index
2. Change the Cluster
3. Change directory statistics
In addition, today's robust applications consist of thousands of different SQL statements. The execution frequency of these statements varies with the functions of the application and the daily
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