Tuesday, 17 October 2017

AMDP based BEx Customer HANA Exit

With the release of the AS ABAP 7.4 many new capabilities were introduced, one of them is the AMDP methodology. This methodology is transformational as developers can leverage the best of both ABAP and SQL programming language to build models and applications. SAP BW on HANA, S/4 HANA embedded BW and BW/4 HANA can also take benefit from this framework.

Monday, 16 October 2017

SAP HANA MRP Live BADI Usage

SAP continues to improve its ERP products to HANA technology gradually. One of the most critical product is that instead of the classic MRP, it now becomes a new product as “MRP Live“. For the benefit of HANA’s speed and efficiency, MRP Live is available.

Such changes and innovations have always had advantages and disadvantages as well. These changes are especially important for backend developers. The biggest advantage of MRP Live is speed and performance, the biggest disadvantage is the length of development time. Even for a simple customer demand, we may need to write dozens of lines of code. This situation will change according to needs, of course, but it seems that we will spend much more time for according to the previous development environment and language as known SAP GUI and ABAP. MRP live is fully developed with ABAP managed database procedure(AMDP) and also for enhancements AMDP BADIs is used for MRP Live HANA development with top-down approach.

Sunday, 15 October 2017

Step by Step Hierarchies in S/4 HANA Analytics

I am going to show step by step procedure to display hierarchies in S/4 using analytical CDS views. I will use manger employee hierarchy as an example here.

To achieve this you need:

◉ A dimension view with an employee as key, and his manager as attribute, and optionally some time-dependency information; this view gets the @Hierarchy annotations.

Friday, 13 October 2017

Code Push Down for HANA Starts with ABAP Open SQL

What is Code Push Down?


One of the key differences for developing applications in ABAP for HANA is that you can push down data intense computations and calculations to the HANA DB layer instead bringing all the data to the ABAP layer and the processing the data to do computations. This is what is termed as Code-to-Data paradigm in the context of developing ABAP applications optimized for HANA.

Thursday, 12 October 2017

Under the HANA hood of an ABAP Managed Database Procedure

I’ve been looking into ABAP managed database procedures for HANA recently and decided to take a look at what’s actually created under the hood in the HANA database when an AMDP is created.

I created a small test class in our CRM on HANA system with a method to read a couple of columns from the crmd_orderadm_h table using sqlscript. The method takes one input parameter IV_OBJECT_ID and has one export parameter ET_ORDER.

Wednesday, 11 October 2017

Hana DB Row Store Reorganization

How To Perform Hana DB Row Store Reorganization


Row store memory size is a lot bigger than the actual data size in row store and shows high fragmentation ratio

A row store table requires more memory to store records, the table takes a free page from existing segments. If no segment has a free page, a new segment is allocated. Deleting a large number of records may result in a number of sparse segments. In such a case, row store reorganization is very useful and can be performed for memory compaction.

Tuesday, 10 October 2017

SAP HANA System Copy- Homogeneous Recovery Method Using HANA Studio

SAP HANA system copy Procedure- Below is the HANA System copy using Recovery method from PRD to QAS using Hana Studio
  • Take the backup of HANA PRD system
  • Copy/Move the backup form PRD Host to QAS Host
  • Ensure that QAS is having enough space for Backup.
  • Login to Hana Studio of QAS system with ID “SYSTEM”.
  • After Login to QAS system, go to Backup and recovery option.