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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 17:54:24 470

转载 Activating a Performance Trace

You can start and stop a performance trace by clicking the TRACE ON and TRACE OFF buttons in Transaction ST05. You can only create one performance trace per application server at a time. In the STATE

2015-01-19 17:36:40 450

转载 Performance Trace

Runtime analysis of ABAP programs Performance 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 17:33:27 675

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 16:05:30 683

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

End-to-end workload analysis The 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 15:38:17 565

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 - GLOBAL Alternatively, you

2015-01-19 09:47:42 477

转载 Central Workload Monitor

Availability The 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 09:40:36 481

转载 Basics of End-to-End Workload Analysis

Passport and distributed statistics records If 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 09:11:54 426

转载 End-to-End Workload Analysis

Transaction steps using multiple systems In 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 09:01:13 372

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 08:02:50 444

转载 Analyzing General Performance Problems

Is There a General Performance Problem? Criteria Users 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 15:40:06 531

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 15:36:39 315

转载 Activity, Throughput, and Load

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

2015-01-16 14:52:05 409

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 Time Guideline Values for Analyzing Average Response Ti

2015-01-16 13:41:37 775

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 12:58:57 594

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, the RSCOLL00 program must be scheduled to run every hour as a backgroun

2015-01-16 12:39:11 550

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-LOCAL Alternatively, you

2015-01-16 12:02:04 735

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 10:41:20 470

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 09:25:37 435

转载 Arranging Automatic Alert Messaging

Auto-reaction method You 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 09:20:46 414

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 09:04:30 319

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 08:41:21 328

转载 Continuous Monitoring Using CCMS

SAP Alert Monitor The 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 08:24:53 388

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 17:48:42 950

转载 Monitoring the Dispatcher Queue

Dispatcher statistics Occasionally, 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 16:29:28 777

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 13:35:10 421

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 12:05:22 497

转载 Work Process Overview Fields

The description of the fields of the local work process overview Field Explanation No. Work process number (unique for each SAP instance). This number and the SAP instance name (or

2015-01-15 10:52:09 430

转载 Analyzing SAP Work Processes

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

2015-01-15 09:37:30 528

转载 Other Monitors for Detailed Analysis ST02

SAP parameter changes You can view the change log in the SAP memory configuration monitor via the path DETAIL ANALYSIS MENU • PARAMETERS. Monitors for detailed analysis you can call other

2015-01-15 07:48:54 848

翻译 Displaying Allocated Memory

ST02 - Detail Analysis Menu - Storage Field Explanation STORAGE SHARED BETWEEN WORK PROCESSES The value for the ALLOCATED column in the TOTAL row shows the total memory allocated

2015-01-14 16:50:53 596

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

Fields in the Memory Configuration Monitor Field Explanation CURRENT USE Amount of memory currently used in the memory area, given in KB and %. MAX. USE Maximum amount of this

2015-01-14 15:18:07 756

翻译 Analyzing SAP Memory Configuration

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

2015-01-14 14:52:22 527

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 14:44:54 485

原创 Other Database Checks

Database locks (Exclusive lock Waits) Database Error Log File Parameter Changes Number of Database Processors Table Statistics for the Database Optimizer (Update Statistics)

2015-01-14 14:42:05 321

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 avoid hot spots. You can find important key figures

2015-01-14 14:19:37 381

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 13:43:48 467

原创 Analyzing the Database Buffer

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

2015-01-14 13:38:42 441

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 1014

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 11:28:33 418

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