BW Queries by factors faster using FEMS-pushdown

Complex SAP BW queries often contain FEMS-filters. These filters used to be applied on the SAP application server, which was not very efficient. A new SQL statement generator in SAP BW implements an optimized algorithm for FEMS processing. We have seen performance improvements up-to factor 100. The actual performance improvement varies heavily for different BW… Read more

Recent SAP BW improvements for SQL Server

Over the course of the last few months we implemented several improvements in SAP BW. We already blogged about two improvements separately: In this blog we want to describe a few, additional improvements BW query performance of F4-Help Some BW queries were not using intra-query parallelism, because the BW statement generator did not… Read more

Improved SAP compression tool MSSCOMPRESS

SAP program MSSCOMPRESS is a tool for reducing disk space usage of SAP NetWeaver based systems. In addition, it is often used as a monitoring tool. MSSCOMPRESS has been released by SAP over 6 years ago. In the meanwhile, several improvements have been implemented. The latest version of MSSCOMPRESS is available as an attachment of… Read more

Moving from SAP 2-Tier to 3-Tier configuration and performance seems worse

Lately we were involved in a case where a customer moved a SAP ERP system from a 2-Tier configuration to a 3-Tier configuration in virtualized environments. This was done because the customer virtualized the system and could not provide VMs large enough on the new host hardware to continue with a 2-Tier SAP setup. Hence… Read more

Simplified and faster SAP BW Process Chains

Based on customer feedback over the course of the last 12 months we implemented several improvements in SAP BW. The code changes improve SAP platform migrations of very large SAP BW instances from other DBMS to SQL Server significantly. Furthermore, they simplify and accelerate SAP BW process chains for very large BW systems. The most… Read more

SQL Server 2016 improvements for SAP (BW)

SAP recently released support for SQL Server 2016 for some SAP NetWeaver based systems, see SQL Server 2016 contains many new features which can be used by SAP. For SAP BW, particularly the improved columnstore features are relevant. An overview of SQL Server Columnstore in SQL Server 2014 is published here: The most… Read more

SQL Server has encountered I/O requests taking longer than 15 seconds

Most of us have seen these errors in the SQL Server error log pointing to a IO subsystem problem: 2015/06/15 12:43:01 spid8s SQL Server has encountered 1016 occurrence(s) of I/O requests taking longer than 15 seconds to complete on file [N:\ABCDATA8\ [ABCDATA8.ndf] in database [ABC] (5). The OS file handle is 0x000000000000172C.  The offset of the… Read more

Whitepaper SAP on SQL Server 2012 and SQL Server 2014

It has been a long while since we published the last whitepaper about SAP workload on SQL Server. It also has been a long while that we were working on a successor paper. Too long because we needed to revise the document several times in order to include new product releases and new functionalities. Since… Read more

Improvements of SAP (BW) System Copy

For performing an r3load-based system copy of an SAP system you should use the SAP Software Provisioning Manager (SWPM). For a BW system it is mandatory to run the report SMIGR_CREATE_DDL before the system copy and RS_BW_POST_MIGRATION after the system copy. Both reports have been improved with the new SAP BW code delivered for SQL… Read more

New White Paper on Sizing SAP Solutions on Azure Public Cloud

We have released a new white paper detailing how to size SAP solutions on Microsoft Azure public cloud. The document is attached to this blog. Initial work on this topic is mentioned in this blog: How to Size SAP Systems Running on Azure VMs.   Microsoft is Executing and Publishing SAP SD Standard Application Benchmark on… Read more