Internet Communicator Manager (ICM) Test Quiz

In order to determine if there is an issue with network connections from the application layer, you would perform a LAN check by ping in transaction operating System Monitor (ST06(n)). This transaction allows you to test the network connectivity by sending a ping command to a specified IP address or hostname. By checking the LAN connectivity, you can identify any potential network issues that may be affecting the application layer.

CPU idle time is not a component of dialog response time. Dialog response time refers to the time it takes for a system to respond to a user's input or request. The components of dialog response time typically include wait time (the time a user waits for a response), roll in/out (the time it takes to load or unload data), and database request (the time it takes to retrieve data from a database). CPU idle time, on the other hand, refers to the time when the CPU is not actively processing any tasks.

The default location of the statistical records that are written to the file system is in the directory /usr/sap//DVEBMGS##/data.

The two key criteria when evaluating performance problems are whether the performance problem occurred in the past and whether the problem is happening right now. These criteria help in understanding the frequency and persistence of the performance issue, which can provide valuable insights for troubleshooting and finding solutions. The other options, such as identifying the user experiencing the problem or considering the time of day, may not be as relevant in determining the cause and resolution of the performance problem.

The correct answer is D) rdisp/dynamic_wp_check. This profile parameter affects the activation of dynamic work processes. When this parameter is set to a non-zero value, the system dynamically activates additional work processes based on the workload. This allows for better utilization of system resources and improved performance.

This statement is true. Virtual memory is indeed made up of the operating system's swap or page file and physical memory components. The swap or page file is a portion of the hard drive that the operating system uses as an extension of physical memory. It allows the operating system to temporarily store data that is not currently being used by programs in physical memory. When the data is needed again, it can be swapped back into physical memory. This helps to optimize memory usage and allows for efficient multitasking.

The statement is true. A hardware bottleneck occurs in the CPU when the processing time exceeds twice the CPU time. This means that the CPU is unable to handle the workload efficiently, resulting in slower processing times. A hardware bottleneck can occur due to various reasons such as outdated or insufficient hardware components, excessive heat, or inadequate memory. When a hardware bottleneck occurs, it can negatively impact the overall performance and efficiency of the system.

The parameter "rdisp/bufremode" controls the buffer synchronization behavior in the SAP system. This parameter determines whether the buffer is shared or not between different application servers. If set to "0", the buffer is not shared and each application server has its own private buffer. If set to "1", the buffer is shared and changes made by one application server are visible to other application servers as well. Therefore, the correct answer is C) rdisp/bufremode.

Queued RFC calls guarantee multiple communication steps in a specific order. In a queued RFC, the calling program sends the request to a queue, and the receiving program retrieves the request from the queue and processes it. This ensures that the communication steps occur in the order they were sent, allowing for reliable and sequential execution of the RFC calls. Asynchronous RFC calls do not guarantee a specific order, while transactional RFC calls ensure atomicity but not a specific order. Synchronous RFC calls also do not guarantee a specific order.

The main indicator of poor database performance in the transaction workload monitor (ST03N) is when the average DB request time is more than 40% of the average response time. This suggests that a significant portion of the response time is being spent on database requests, indicating potential inefficiencies or bottlenecks in the database system.

SM58 is the correct answer for monitoring and analyzing issues in the transactional RFC queue. SM58 is a transaction code in SAP that allows users to monitor and analyze the status of transactional RFC queues. It provides detailed information about the queued and processed RFCs, allowing users to identify and resolve any issues or errors in the queue. SM58 is specifically designed for monitoring and managing transactional RFC queues, making it the best tool for this purpose.

An expensive SQL statement refers to an SQL statement that causes the database to read a large number of blocks from either the disk or the database itself. This can result in slower performance and increased resource usage. It indicates that the statement is not optimized and may need to be improved by implementing changes related to the database.

Creating an index using selective fields from the WHERE clause can improve the performance of the query. This is because an index allows the database to quickly locate the relevant data based on the indexed fields, reducing the need for full table scans. By selectively choosing the fields from the WHERE clause to create the index, the database can efficiently retrieve the required data, resulting in improved query performance.

The purpose of buffering data in SAP table buffers is to reduce the load on the database and to speed up access to data. By buffering data, the system can store frequently accessed data in memory, reducing the need to retrieve it from the database every time it is requested. This helps to improve system performance and response times, as well as reduce the workload on the database server. Additionally, buffering data can also help in creating better access paths to data, further optimizing data retrieval processes.

Queued RFC (qRFC) is the correct answer because it is used for multiple communication steps that must be completed in a particular order. qRFC allows the sending system to queue the RFC request and ensures that the receiving system processes the requests in the same order they were sent. This ensures the integrity and consistency of the data being exchanged between systems. Unlike other options like Synchronous RFC (sRFC), Asynchronous RFC (aRFC), and Transactional RFC (tRFC), qRFC specifically focuses on maintaining the order of communication steps.

The correct answer is that SAPOSCOL is an SAP proprietary standalone program for collecting Operating System usage information.

Parts of user context are stored in extended memory instead of local memory to speed up context switches. Context switches involve saving the current state of a process and loading the saved state of another process. By storing the user context in extended memory, the switching process becomes faster as the data can be accessed more efficiently. This helps in improving the overall performance of the system by reducing the time taken for context switches.

Dialog work processes allocate memory in the initial part of the roll area, extended memory, remaining part of the roll area, and heap memory.

To investigate the situation of CPU idle value on a server, it is recommended to check if the load can be distributed to other servers with spare CPU capacity. This will help balance the workload and utilize available resources efficiently. Additionally, checking the 'Top 40 CPU Processes' in the transaction Operating System monitor (ST06(n)) can provide insights into the processes consuming the most CPU resources, allowing for further investigation and optimization if necessary.

The correct answers for the question are B) em/max_size_MB and D) Ztta/roll_extension. These parameters are responsible for allocating heap memory for dialog processes. em/max_size_MB determines the maximum heap memory size in megabytes that can be allocated for a dialog process, while Ztta/roll_extension determines the size of the extended memory that can be used for roll area in dialog processes.

The statement is false. The user's context is not initially stored in the heap area in the shared memory. The user's context typically includes information such as the program counter, register values, and stack pointer, and it is usually stored in the stack area of memory. The heap area is used for dynamically allocated memory.

2 answers

The statement is true. If the database request time is greater than 40% of the response time minus the wait time in the transaction profile of ST03, it indicates that the SQL statements used in the program are taking a significant amount of time to execute. This suggests that these SQL statements are expensive and may need to be optimized or improved for better performance.

The RFC+CPIC time in synchronous RFC refers to the time needed to establish the RFC communication plus the roll out time, roll wait time, and roll in time. This means that it includes the time required to establish the communication with the RFC server, as well as the additional time for the various roll operations.

The correct answer is B) rdisp/rfc_min_wait_dia_wp. This parameter should be set to maintain the number of dialog work processes that should be kept free for users.

3 answers

The optimizer statistics should be kept up to date by using scheduled periodic refreshes. This means that the statistics should be refreshed at regular intervals to ensure that the optimizer has the most accurate and current information about the data in the database. This helps the optimizer make better decisions when creating execution plans for queries and optimizing performance. By scheduling periodic refreshes, the statistics are automatically updated without the need for manual intervention, ensuring that the optimizer always has the most up-to-date information.

The statement "A Single Statistical Record captures an entire transaction in SAP" is false. A Single Statistical Record in SAP captures statistical data related to a transaction, such as the time it took to complete or the number of times it occurred. However, it does not capture the entire transaction itself, including all the details and data associated with it.

The transactions ST03, SM04, and SM66 are used in evaluating system performance. ST03 is used to analyze workload and performance data, SM04 is used to monitor the number of active users and sessions, and SM66 is used to monitor and analyze system-wide performance and workload distribution. These transactions provide valuable information and insights into the performance of the system, allowing for optimization and troubleshooting.

There are 2 correct answers to this question.

In transaction ST02, there can indeed be a problem if there is a lot of swapping in the SAP buffers. Swapping refers to the process of moving data between the main memory and the disk, and excessive swapping can lead to performance issues and slower response times. Therefore, it is true that there can be a problem if there is a lot of swapping in the SAP buffers.

High CPU utilization near 100% indicates that the CPU is constantly being utilized to its maximum capacity, which can be a sign of a hardware bottleneck in the SAP system. High swap/paging activity indicates that the system is frequently swapping data between the RAM and the hard disk, which can also be a sign of a hardware bottleneck. Both of these indicators suggest that the system is struggling to handle the workload efficiently, potentially due to limitations in the hardware resources.

The correct answer is C) Executable program sappfpar. This program can be used to check the formulas and the values used in the formula-based memory parameters.

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The Explain function in SQL trace provides information about the execution plan, including table and index access. It also provides estimated costs and estimated rows for the query. Additionally, it provides statistics about the tables and indexes used in the query.

2 correct answers

The valid options for table buffering types are: Single record buffered, Generic area buffered, and Fully buffered. These buffering types determine how data is stored and accessed in memory for a table. Single record buffered means that only one record is loaded into memory at a time, while generic area buffered means that a range of records is loaded. Fully buffered means that the entire table is loaded into memory. Client specific buffered is not a valid option for table buffering types.

2 correct answers

The correct answer is RFC client profile. In the transaction Worload Monitor (ST03N), the RFC client profile provides information about function modules in other systems that are called by the current system. This profile helps in analyzing the performance and usage of RFC calls made by the current system to other systems.

The correct answer indicates that when running transaction Table Call Statistics (ST10), tables with a high number of 'Rows affected', tables with a large buffer size, and tables with a high number of invalidations are indicators of certain characteristics or issues within the tables. These indicators may suggest that these tables are experiencing frequent updates or modifications, have a large amount of data stored in memory, and are prone to becoming invalidated or outdated frequently. These indicators can provide insights into the performance and usage of the tables.

The customer can resolve the issue by using the SAP Web Dispatcher or checking its configuration. This suggests that the problem may be related to the configuration of the SAP Web Dispatcher, which is responsible for distributing incoming requests to the appropriate instances. By checking its configuration, the customer can identify any potential issues and make necessary adjustments to resolve the problem.

3 answers

Zero Administration memory management allows the total extended memory size to grow dynamically and also allows other memory parameters to be set automatically. This means that the system can automatically adjust the memory allocation based on the needs of the applications running, without the need for manual intervention from the administrator. This ensures optimal memory usage and eliminates the need for constant monitoring and adjustment of memory parameters.

Transactions SM50 and SM66 are used to evaluate the work process statuses and activities that are currently happening. SM50 is used to monitor the work processes in the SAP system, providing information about their status, CPU usage, and memory usage. SM66 is used to monitor the server processes and their status, allowing administrators to identify any performance issues or bottlenecks. Both transactions provide real-time information about the work processes and activities, making them suitable for evaluating the current state of the system.

Table buffering is recommended for tables that are seldom changed and for customizing data. Table buffering helps improve performance by storing frequently accessed data in memory, reducing the need to access the database. This is particularly beneficial for tables that are not frequently updated, as it allows for faster retrieval of data. Additionally, buffering customizing data can help improve the performance of applications that rely on this data for customization purposes.

Communication problems with the GUI front end and problems with the external RFC communication can cause the average roll-wait time for task type DI to increase. These issues can lead to delays in the communication between the SAP system and the front end or external systems, resulting in longer wait times for the tasks to complete. This can impact the overall performance and efficiency of the system.

2 answers correct

ABAP heap memory is allocated in the local memory of the work process when required. This means that the memory is allocated dynamically as needed during the execution of the program. The work process is responsible for managing its own local memory and allocating heap memory when necessary to store data and objects. This allows for efficient memory usage as memory is only allocated when it is actually needed, and it is deallocated when it is no longer required.

This statement is false. SWAPS in transaction ST02 are not necessarily an indication of high CPU utilization. SWAPS, also known as page swaps or paging, occur when the operating system moves data from the main memory (RAM) to the secondary storage (hard disk) to free up space in RAM. This is done when the RAM is full or when the operating system decides to optimize memory usage. SWAPS can occur due to various reasons, such as insufficient RAM, memory leaks, or high memory usage by other processes. It is not directly related to CPU utilization.

The statement is true. PHYS_MEMSIZE is a parameter that indicates the amount of memory used in an SAP instance. It can be used to automatically initiate changes of formula-based memory parameters, allowing for efficient memory management and optimization within the SAP system.