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Discover a flexible, comprehensive way to identify and solve the root causes of application performance issues using a drill-down approach. Once these root software-based causes are corrected, your hardware can be tuned and modeled around an optimized application environment. End-users and customers will gain significant improvement in system performance much more cost effectively than by starting with hardware upgrades, even in environments with purchased software and no source code.

Journaling your iSeries database files, system objects, and integrated file systems provides great benefit to your high availability, data warehousing, commitment control, security and data auditing, application debugging, and troubleshooting efforts.

However, the performance impact and disk-storage requirements of journaling can be enormous. A detailed analysis of your journal receiver transactions can mitigate this strain, while ensuring that you gain maximum benefit from your journaling activities.

Regardless of the intended use of journaling on your systems, 50-80 percent of the typical journal receiver transactions on large systems are generated unintentionally and for unnecessary purposes. This huge inflation in transaction volume can significantly impact system performance, and can hinder the ability of your high availability or data warehouse solutions to keep data current.

Take a data replication project, for example. Your intent might be to free up resources on your core business system by moving workload onto another server. This is a worthy goal; however, when you start journaling and initiate the data replication software, you can dramatically impact the performance on the source system, the target system and the network in between. If you need to upgrade your source system and T1 line to simply offload workload, something is wrong!

If you are already journaling on your systems, a valuable resource is sitting on your box, unused. The data stored in these journal receivers is a gold mine of information that you can use for security and data auditing, or for more advanced application debugging and troubleshooting. Having an audit of every add, update, and delete that occurs on your system can be of significant value - you might want to take better advantage of it.

No matter what your role within an IT organization, improving system performance and delaying or eliminating the need for hardware upgrades benefits everyone. Whether you're an executive manager looking to get more from your budget, a systems administrator needing more from your staff or a software developer who wants to develop performance-efficient applications, this educational white paper provides an in-depth discussion on various ways that these three IT functional areas can easily optimize the performance of their application environments.

To an end user, only two things matter in an application: functionality and performance. While there's very little functionality that can't be accomplished with today's technology, performance continues to be a challenge. The vast amounts of data now being processed can quickly swamp a customer's system and make it inefficient, slow an redundant. How can this situation improve?

Discover how to solve critical performance issues by understanding that high disk activity, slow I/O response and excessive application I/O requests are responsible. You'll also learn why these kinds of issues can't be solved by CPU upgrades.

Application performance tuning and analysis of batch jobs can provide significant value within your iSeries and AS/400 environments. By finding the underlying causes of high resource utilization or long duration of batch processing, you may be able to avoid or delay expensive hardware upgrades that try to solve the issues.

Kampgrounds Of America, Inc., (KOA), a franchiser and operator of more than 400 campgrounds in North America, quickly discovered that hardware upgrades don't necessarily solve performance issues by themselves. While KOA's upgrade from an AS/400 server model 730 to a model 810 addressed an outdated disk controller issue, their campground-management application still had additional underlying performance problems that required a deeper look at, and measurement of, system performance.

With a limited available budget, KOA turned to MB's Workload Performance Series software which quickly proved its worth during a product demonstration that enabled IS staff to learn enough performance-enhancement basics to make a measurable performance increase in one of its main in-house applications.

Once the software was purchased and installed, it continued to prove its worth with its disk analysis and Query Optimizer tools that quickly pinpointed the root cause of disk throughput issues. By creating two new logical files and changing three application programs to use these newly created files, KOA developers eliminated more than 80 percent of the total number of skipped records for the entire system causing an immediate increase in system response time.

The use of additional Workload Performance Series tools to focus on other system components including physical disk I/Os, SQL queries and access paths resulted in incremental performance improvements including a reduction of 26 percent of total system-wide I/Os and a fivefold increase in user response times. Another benefit KOA realized from the regular use of the software was the addition of a safety net for detecting unauthorized access attempts.