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Partitioned Data Management (PDM) (New) ( RELNISOIL_600_PRA_PDM )

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Partitioned Data Management (PDM) (New)

Use

As of SAP ECC Industry Extension Oil & Gas 6.0, PRA supports Partitioned Data Management (PDM).

You can use Partitioned Data Management (PDM) to solve the problem of the rapid, exponential growth of data in the PRA system. PDM provides seamless access to PRA data across multiple PRA installations (multiple servers), which improves system performance and decreases data access times and data volumes.

The primary data installation contains the current data, and all historical data is distributed over one or more secondary installations. Data splitting is on a per-table basis, and data can be moved from primary to secondary installations, and vis-versa. One main advantage of PDM is that it makes SQL statements much more efficient. PDM allows prior period adjustments (PPAs) to be handled. Communication between the various instances is carried out using RFC and CPIC.

PDM consists of a:

- PDM Engine - The PDM functionality that runs without user interaction, in the background. When the user runs a program or process in PRA, the PDM Engine decides on which instance the data is residing, and fetches the appropriate data from the relevant instance. The PDM Engine can merge the data in the case of multiple instances, and present the data to the PRA program/application, and update data in all relevant instances, if database updates are required by the PRA process.

- PDM Administrator Workbench - You can use the PDM Administrator Workbench which is a tool - provided through a dedicated screen - to split your PRA data among the primary storage installation and the secondary installations. The Workbench allows the PDM (system) administrator to schedule data movements between different storage locations, as well as view important information regarding the movement of table data. A new screen (interface) exists to view tables and process individual tables. You can use the Workbench to schedule data movements, to view the history of data movements, and to view job statuses.

PDM is delivered along with PRA, but has to be activated in customizing to be used.

Effects on Existing Data

PDM is purely optional for customers. If no set-up or configuration is carried out, data is not be disturbed.

Table data can be split and stored on secondary installations (servers). Table data can be split.

Effects on Data Transfer

PDM will have little or no effect on existing data transfers. However, all new programs which deal with PDM data will need to follow guidlines outlined in the PDM Developer's Guide.

Data is transferred from primary tables to secondary tables stored on dedicated storage servers.

Effects on System Administration

The main goal of PDM is splitting data between multiple databases/systems. The PDM Administrator Workbench (transaction O3UP_ADMIN_WORKBENCH) has been provided to help administrators move data from one system to another. The PDM functionality is designed to only work if all systems are active and functional. However, some care will still need to be spent on making sure that the multitude of systems be synchronized, with respect to backup.

Effects on Customizing

You can switch on all PDM functionality, by selecting a single flag. You can also switch off all functionality, by deselecting that flag. If the flag is de-selected, the PDM functionality will be totally bypassed, and PRA will function as if PDM were not there.

The following new customizing activities are supported;

- Activate configurable items

- Define application areas specific info.

- Enable Tables for PDM

- Create Database Connection Entries

- Assign Valid Database Connections to PDM Storage Locations

- Set Retention Level

- Set Data Retention Periods for PDM Storage Locations

- Create Data Retention Period Groups

- Define Application Area

- Add Tables to PDM

- Replace PDM Includes

- Define Additional Synchronized Tables

- Assign Tables to Table Groups

- Create Workbench Execute Groups

- Assign Tables to Table Groups

- Enhance PDM Engine

Further Information

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Use

Effects on Existing Data

Effects on Data Transfer

Effects on System Administration

Effects on Customizing

Further Information

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