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Knowledgebase » Volume 10 (2008) » Issue 2 (March/April) Issue 2 (March/April)Improve data access in SAP environments with the Oracle Cost Based Optimizer (CBO)
The Oracle Cost Based Optimizer (CBO) can be a powerful tool for determining the most efficient way to retrieve data from an Oracle database. The CBO identifies ways to improve data-access time by considering resource costs such as I/O, by accounting for statistical values and parameters, and by selecting appropriate indexes. Compared to the Rule Based Optimizer1 (RBO), the CBO is more sophisticated and complex, but it also has a few drawbacks.
How to avoid Web Dynpro Java implementation nightmares
When used correctly, Web Dynpro is an efficient and powerful tool for building robust and reliable business applications. Web Dynpro is unlike other Web development toolsets, however, and if developers use it incorrectly, they will create poor-quality applications that are difficult and costly to maintain. This article describes the most common mistakes made in Web Dynpro Java implementations, why they occur, and how to avoid them. It then explains the key design principles that will enable you to write high-quality, low-TCO business applications and start reaping the real rewards of Web Dynpro.
Using SAP NetWeaver Process Integration (PI) to ensure the safe transfer of data across security domain boundaries
Your data is one of your most valuable assets, so you protect it by separating it into systems with varying levels of security, depending on the sensitivity of the information. But what if processes running in lower-level security areas need to access data stored in higher-level security areas? This article shows you how to use SAP NetWeaver Process Integration (PI) 7.0 in conjunction with a security gateway to ensure the safe transfer of data between high and low security domains. PI serves as a flexible and transparent integration platform while the security gateway acts as a firewall, enabling data to cross domain boundaries without compromising security.
Use SAP NetWeaver Portal’s powerful collaboration capabilities to enhance communication between local and remote users
Most IT projects would not succeed without some kind of collaboration. SAP NetWeaver Portal allows users to work together through its Knowledge Management (KM) component, which contains the Content Management (CM) functionality that enables collaboration, and which integrates the SAP system’s search and classification engine (TREX) to provide customized search results. This article explains how KM, CM, TREX, and their underlying architecture support collaboration, and looks at three SAP tools that foster communication between local and remote users: Collaboration Rooms, the Universal Worklist, and Instant Messaging.
Improve communication between your C/C++ applications and SAP systems with SAP NetWeaver RFC SDK: Part 3 — Advanced topics
The new SAP NetWeaver remote function call (RFC) software development kit (SDK) provides a reliable and highly efficient communications protocol for exchanging data between C/C++-based applications and SAP systems. This article, the final installment in a three-part series, looks at some advanced SAP NetWeaver RFC SDK topics, including how to handle transactional RFC (tRFC) and queued RFC (qRFC), construct hard-coded metadata descriptions, handle RFC callbacks, and use single sign-on (SSO) and Secure Network Communication (SNC). You will also find out how the iDocClient and iDocServer programs work and how to test them.
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