Oracle hardware sizing tools

Processor and memory resources in particular should be allocated generously, for the maximum user load expected. The amount of hardware resources required varies based on the application. A common mistake is to use resource estimates that do not incorporate user think time and network latencies. In sizing applications, you must have some idea of the relationship between the number of potential users and the number of concurrent users.

This is determined by the think time and the average response time for your application. To determine memory requirements, you also need to consider the number of concurrent executing users not the total user population times the cost per user. Note: The MaxClients setting in your httpd. See "MaxClients" for information on the MaxClients directive. Table provides an example of the impact of think time and service time on the concurrency and resulting performance of a system.

Foot 2 Think time - the time the user is not engaged in actual use of the processor the time between requests. Foot 3 Service time seconds - elapsed time to complete the operation measured for a single user.

Foot 4 Range of concurrent users - the number of users measured on the server, taken in snapshots from the server-status display requests currently being processed. Foot 5 Average response time - response time measured at the client under load.

Foot 6 Requests per second throughput - number of requests processed. For most applications, the majority of the CPU utilization is spent in processing the application's code. The CPU requirement of any application depends on its complexity and workload, as shown in Table You will need to monitor the CPU requirements of applications throughout the development cycle.

For example, a request with a response time of 0. Most of the performance cost in using SSL is in establishing the connection approximately ms of CPU time per connection on a Mhz processor. The high connection cost is incurred for the first connection in a client's SSL session, because the HTTP Server can cache the SSL session information, reducing the overhead for subsequent connections. Use the operating system manual to define the swap space. Some operating systems have maximum sizes for the swap space.

The Agile e6. The database connection has 10 times the throughout and much more round trips. Thus, a fast network connection, especially to the database server, is necessary no WAN. The following graphic shows the WebLogic deployment architecture after an Agile e6. If there are two or more applications installed, for instance, prod, test, dev, etc. For more information about the Agile e6. The maximum heap size of the JVM is practically unlimited and depends on the maximum memory available on the machine.

This totals to 24GB. For applications with extra huge number of concurrent user sessions, at least 4GB has to be considered as a JVM's maximal heap size per domain. For more information on the Agile e6. For the Web Client a KB connection will usually not be under full load. A KB connection acts slower, and a 64 KB connection is possible but the performance decrease is remarkable.

Add Network load according to expected documents and drawings etc. You can check existing WAN connections for already existing network loads. File transfer uses the total capacity of a network connection. If a network line is under heavy load the elapsed time of the IP-packages is long.

The network connection must have enough spare bandwidth. There are no special requirements for the Agile e6. The machine should not be swapped, and enough free memory should be available for file buffer. The throughput of the File Server is determined by the network connection. For the File Server identical operating system versions are used as the Agile e6.

It is not necessary to have the same operating system as the client. You can install on mixed operating systems. The process allocates 1 MB. Each connection uses main memory to buffer the transmission. So enough free memory should be available. This requires an additional free memory of MB on this server, resulting in a total of at least 1GB free memory. The File Server installation needs 1 MB of disk space. Estimate the necessary disk space for the stored documents. The File Server stores the files in vaults.

An electronic vault is a directory and its contents. One directory is limited by the partition size. The maximum capacity of an electronic vault is the size of the partition. If the vault is running out of disk space you can create a new vault on a second partition or you have to shift the vault to a bigger partition. The directory must be moved to the bigger partition with preserved file permissions Windows!!

Agile e6. This is just for the study purpose,Please be advised to get in touch with oracle for any official recommandation. Database block buffer sizing. I am summarizing few of them here. Posted by Sandeep Panchal at AM. Labels: Articles for Architects.

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