SAP on ASE - Development Update
Compression Advisor for SAP Adaptive Server Enterprise
With SAP ASE 15.7, advanced compression capabilities have been introduced that allow large data volumes to be stored more compactly, thus reducing I/O times. In addition, SAP ASE 16.0 provides an index compression feature which further reduces the overall database size. However, compressing existing databases requires resources and time to rebuild the indexes. This can become a challenge for multi-terabyte databases or environments with extremely high load and limited maintenance windows.
The aim of this document is to help you get started with the SAP Adaptive Server Enterprise database that is run with SAP applications.
This white paper introduces system administrators to the automatic database expansion feature in SAP Adaptive Server Enterprise. The author will focus on deployments of SAP Business Suite applications running on SAP ASE. With automatic database expansion activated, administrators can further reduce the time needed for administration tasks. More importantly, interruptions to business users can be avoided because the database server can automatically obtain the space resources needed for continuous operation.
An issue has been identified that can potentially cause incorrect results in an SAP Business Warehouse system running on SAP Adaptive Server Enterprise. The problem has been observed whenever the optimization goal 'allrows_dss' or another optimization goal that includes optcriteria 'advanced_aggregation' is used for an SQL statement. This is typically the case for SAP BW systems. SAP ERP systems running on ASE are not affected. In SAP ERP systems, optimization goal 'allrows_mix' has been configured.
Details and corrections are available in SAP Note 2026328 - SYB: Incorrect results with SUM aggregation on decimal fields. We strongly recommend to implement the corrections in SAP BW as soon as possible.
On the Road to an Enterprise Cloud
Customer demands for support of virtualization are rapidly growing. SAP offers support for running its applications in virtualized cloud environments. You can start your projects and can bring the innovations from SAP into production in a matter of weeks instead of months, with complete flexibility of deployment choice. Landscape Virtualization Management (LVM) is available for SAP Business Suite on SAP Adaptive Server Enterprise.
Maintaining tables, indexes and data partitions is crucial for productive database systems. Continuous insertion, update and deletion of data induces fragmentation, bad cluster ratios and inaccurate optimizer statistics. The article shows how the DBA Cockpit and its automatic table maintenance for SAP ASE ensures good cluster ratios on tables and indexes, frees up unused space and ensures accurate optimizer statistics.
General Availability of SAP Adaptive Server Enterprise
SAP Business Suite on ASE is available for SAP Business Suite 7i2010, 7i2011, and 7i2013. For more information, refer to SAP Note 1554717