how to performance tuning in db2

the execution 4, quickly find the execution of the high cost of SQL #首先要打开监视器的开关 #db2 Update monitor switches using Bufferpool on "lock on" "Statement on" table on "UOW on" #在系统最繁忙的时候, run #db2 get snapshot to all applications > App.out #然后在该文件中查找处于Executing状态的应用, locate the corresponding SQL statement that was executed. #如果用这种方法找不到, and then collect a snapshot of SQL #

This article mainly describes the actual operation steps of DB2 9.7 SQL compatibility and the benefits of DB2 9.7 SQL compatibility. At the same time, this article also describes the SQL features, the following is a detailed description of the main content of the article. I hope you will have a better understanding of it after browsing. Developers! Do you have Oracle database skills? Do you want to reuse P

This article mainly describes the actual operational performance of DB2 9 XML in the real environment, as well as the precautions worth attention in its actual operations and the description of its actual application code, the following is a detailed description of the main content of the article. I hope you will have a better understanding of it after browsing. Beijing Xicheng District Health Bureau provid

Introduction: DB2 databaseOfQueryThe function is a good performance in the DB2 database. The query function of the DB2 database shows the business intelligence of the DB2 database. This article mainly discusses some methods that can enable efficient execution of large querie

This article mainly describes the problem of DB2 Performance Tuning. We mainly answer the problems in DB2 performance tuning in a one-Question-and-one manner, the following is a description of the DB2 Performance Tuning problem. I

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

BKJIA Summary: in the previous article, we read the classification and analysis of DB2 performance problems. This time, we will focus on the Performance Optimization of DB2 utilities. Let's take a look at how to improve the performance of backup operations: Increase the size

Guidance:This article will introduce youPerformance Parameters of the IBM DB2 databaseThe "performance impact" column in the table indicates the degree to which each parameter affects system performance. However, this column cannot be accurately applied to all environments; readers should regard this information as a general situation. Height:Indicates that this

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

resource consumption, at the beginning of the REORG speed, but after a short time, reached the REORG slower table using Topas to view system resources, Discover that resource consumption drops to a lower value, such as IO throughput:The ideal throughputCurrent REORG Slow ThroughputAnalysis:1. First look at DB2 diagnostic log (Db2diag.log) and DB2 Management notification log (db2inst1.nfy), no error was fo

Brief introduction With the increasing application of DB2, more and more database developers are confronted with the problem that the query is too complicated and the performance is difficult to be accepted in the process of project development. This article will mainly from a database developer's point of view introduces several commonly used methods to improve the pe