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转载 Evaluating an SQL Trace

To evaluate a performance trace, select DISPLAY TRACE in the initial screen. A selection screen is displayed, and you can specify in the TRACE TYPE field the part of the trace you want to analyze. In

2015-01-19 17:54:24 464

转载 Activating a Performance Trace

You can start and stop a performance trace by clicking the TRACE ON and TRACE OFF buttons in TransactionST05. You can only create one performance trace per application server at a time. In the STATE

2015-01-19 17:36:40 440

转载 Performance Trace

Runtime analysis of ABAP programsPerformance Trace is a powerful tool for analyzing the runtime of ABAP programs. It enables you to record a program runtime for the following operations: database ac

2015-01-19 17:33:27 666

转载 Single-Record Statistics

For every transaction step executed in the SAP system, a record with statistical information is generated and saved in files on the application servers. This statistical information includes response

2015-01-19 16:05:30 675

转载 End-to-End Workload Monitor in SAP Solution Manager

End-to-end workload analysisThe end-to-end workload analysis in the diagnostics part of SAP Solution Manager provides functions for a workload analysis of ABAP and Java applications on SAP NetWeaver

2015-01-19 15:38:17 559

转载 Working with the Central Workload Monitor

You call the initial screen of the workload monitor via the following menu path:TOOL • ADMINISTRATION • MONITOR • PERFORMANCE • WORKLOAD • AGGREGATED STATISTICS RECORDS - GLOBALAlternatively, you

2015-01-19 09:47:42 471

转载 Central Workload Monitor

AvailabilityThe central workload monitor has been available as of SAP Web Application Server 6.20. The ASAP-based components to be monitored need at least version 4.0 of SAP Basis. In addition to AB

2015-01-19 09:40:36 478

转载 Basics of End-to-End Workload Analysis

Passport and distributed statistics recordsIf multiple SAP components are involved in the processing of a user request, each component writes its data record. In the communication flow between the c

2015-01-19 09:11:54 422

转载 End-to-End Workload Analysis

Transaction steps using multiple systemsIn a simple SAP ERP system, a transaction step usually consists of one action within a system. In a more complex system environment, a single transaction step

2015-01-19 09:01:13 364

转载 Analyzing Specific Performance Problems

The workload monitor is an analysis tool used for both technical analysis and application analysis, with which you can check the performance of individual transactions.Is There a Performance Pro

2015-01-19 08:02:50 425

转载 Analyzing General Performance Problems

Is There a General Performance Problem?CriteriaUsers can often identify a general performance problem. You can use the workload monitor to verify users' observations and check whether response t

2015-01-16 15:40:06 521

转载 Categories of performance problems

In general, the first input for a performance analysis comes from observations made by users. The workload monitor helps you verify users' subjective comments and isolate the causes of performance pro

2015-01-16 15:36:39 306

转载 Activity, Throughput, and Load

Activity and throughputThe concepts of activity, throughput, and load can best be explained using the WORKLOAD OVERVIEW analysis view LoadIf two users each performed 100 transaction steps wi

2015-01-16 14:52:05 400

转载 Interpreting Response Times

Response Time and Its Components: Dispatcher Wait Time, Roll-In Time, load Time, Database Time, Processing Time, CPU Time, and Roll-Out TimeGuideline Values for Analyzing Average Response Ti

2015-01-16 13:41:37 764

转载 Transaction Step Cycle

Once an SAP user completes an entry. the presentation server sends the request to the dispatcher on the application server. The response time (Av. RESPONSE TIME) is measured from the moment the reques

2015-01-16 12:58:57 584

转载 Technical Settings for the Workload Monitor

To ensure that the statistical single records generated and saved for each transaction step are regularly collated in profiles, theRSCOLL00 program must be scheduled to run every hour as a backgroun

2015-01-16 12:39:11 541

转载 Working with the Workload Monitor

You call the initial screen of the workload monitor via the following menu path:TOOLS • ADMINISTRATION • MONITOR • PERFORMANCE • WORKLOAD • AGGREGATED STATISTICS RECORDS-LOCALAlternatively, you

2015-01-16 12:02:04 727

转载 Basics of Workload Analysis and Runtime Analysis

Statistics such as response times, memory use, and database accesses are collected and stored for all transaction steps by every SAP NetWeaver Application Server (AS). The data collected for a request

2015-01-16 10:41:20 455

转载 Graphical User Interface in SAP Solution Manager

SAP Solution Manager includes a graphical interface for presenting your business processes and the corresponding alert situations. This simplifies monitoring, particularly for complex processes and so

2015-01-16 09:25:37 424

转载 Arranging Automatic Alert Messaging

Auto-reaction methodYou can allocate auto-reaction methods to critical performance indicators so you will be informed of an alert by email, fax, or pager, even if you are not currently working with

2015-01-16 09:20:46 410

转载 Arranging Monitoring Tree

In principle, the CCMS Alert Monitor is ready for use immediately after installation. However, its configuration should be optimized and adapted to suit your solution. You can also define and change m

2015-01-16 09:04:30 316

转载 Working with the Alert Monitor

Using the Alert Monitor, you can work in SAP GUI or in the Web UI of the central SAP NetWeaver Administrator. In this section, we describe the user interface in the SAP GUI; the Web UI is self-explana

2015-01-16 08:41:21 324

转载 Continuous Monitoring Using CCMS

SAP Alert MonitorThe Computing Center Management System (CCMS) contains a monitor with which you can monitor all aspects of your SAP solution. Together with SAP Solution Manager, this forms a comple

2015-01-16 08:24:53 383

转载 Analysis of the Internet Communication Manager (ICM)

The Internet Communication Manager (ICM) provides communication between the web browser and SAP work processes of the SAP Java instance or ABAP server. It does not process business logic or generate w

2015-01-15 17:48:42 936

转载 Monitoring the Dispatcher Queue

Dispatcher statisticsOccasionally, it may be useful to analyze the work process dispatcher queue. Statistics on dispatcher activities are available via the server overview at the following path:

2015-01-15 16:29:28 769

转载 System-Wide Work Process Overview

To monitor a system with multiple SAP instances, use the system-wide work process overview (Transaction SM66).By navigating with the 口-〉 button, you'll see the following fields in the system-wide wo

2015-01-15 13:35:10 417

转载 Analyzing Work Processes

If you watch the work process overview for several minutes and repeatedly click the REFRESH button to update the display, you can usually determine whether there is a current performance problem relat

2015-01-15 12:05:22 492

转载 Work Process Overview Fields

The description of the fields of the local work process overviewFieldExplanationNo.Work process number (unique for each SAP instance).This number and the SAP instance name (or

2015-01-15 10:52:09 423

转载 Analyzing SAP Work Processes

Local work process overviewTOOLS • ADMINISTRATION • MONITOR • SYSTEM MONITORING • PROCESS OVERVIEWAlternatively, you can enter Transaction SM50. The PROCESS OVERVIEW screen is displayed.To displ

2015-01-15 09:37:30 515

转载 Other Monitors for Detailed Analysis ST02

SAP parameter changesYou can view the change log in the SAP memory configuration monitor via the pathDETAIL ANALYSIS MENU • PARAMETERS.Monitors for detailed analysisyou can call other

2015-01-15 07:48:54 838

翻译 Displaying Allocated Memory

ST02 - Detail Analysis Menu - StorageFieldExplanationSTORAGE SHAREDBETWEEN WORKPROCESSESThe value for the ALLOCATED column in theTOTAL row shows the total memory allocated

2015-01-14 16:50:53 587

翻译 Analyzing SAP Extended Memory, SAP Heap Memory, and SAP Roll Memory

Fields in the Memory Configuration MonitorFieldExplanationCURRENT USEAmount of memory currently used in the memoryarea, given in KB and %.MAX. USEMaximum amount of this

2015-01-14 15:18:07 741

翻译 Analyzing SAP Memory Configuration

TOOLS • ADMINISTRATION • MONITOR • PERFORMANCE • SETTINGS/BUFFER • BuFFER or via Transaction ST02.Analyzing SAP BuffersIn the BuFFER section of the SAP memory configuration monitor, you will fin

2015-01-14 14:52:22 516

翻译 Rules of Thumb for Database Monitoring

Note that these buffer quality values are only guidelines. In some cases, a database instance can still run well with apparently low buffer quality. Therefore, to avoid unnecessary investment of time

2015-01-14 14:44:54 480

原创 Other Database Checks

Database locks (Exclusive lock Waits)Database Error Log FileParameter ChangesNumber of Database ProcessorsTable Statistics for the Database Optimizer (Update Statistics)

2015-01-14 14:42:05 314

原创 Identifying Read/Write (I/O) Problems - Database

To achieve optimal database performance, 110 activity (read/write accesses) should be evenly distributed on the database's hard drives. You should avoidhot spots.You can find important key figures

2015-01-14 14:19:37 378

原创 Identifying Expensive SQL Statements

Expensive SQL statements are long-running statements and one of the main causes of performance problems.Expensive SQL statements can have the following effects on the entire system:->They ca

2015-01-14 13:43:48 460

原创 Analyzing the Database Buffer

The following values characterize the quality of data buffer accesses:-> Physical read accessesNumber of read accesses to the hard drive. This value indicates how many blocks or pages must be load

2015-01-14 13:38:42 434

原创 The Performance Monitor in the DBA Cockpit

The database monitor in SAP NetWeaver AS ABAP collects performance data from two sources:->The monitor relies on performance data collected by the relevant database system. -> A portion of the per

2015-01-14 12:44:38 1001

原创 Database Monitoring

The most important functions that you require for performance monitoring of the database include the following:->Overview of the database buffers' status->Overview of the currently running databas

2015-01-14 11:28:33 412

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