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Nestlé GD

Start Routine - in an Info-Cube

Posted on Jun 21, 2004 at 05:01 PM 6 Views

In the scenario of an update to an Info-Cube from an ODS, the system automatically creates a number of dialog process based on the volume of data to be updated.

Since each of these processes run independently, it appears that the start rtn is executed in each process.

In the cases where a large table is read into memory in the start rtn, this happens in each process which is an unnecessary in terms of efficiency of the load process.

Any ideas on ways around this and/or is there a way to share the table in memory once its read.

Thanks Mathew

BW (SAP Business Warehouse) SAP TechEd
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1 Answer

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    Former Member
    Posted on Jun 25, 2004 at 03:30 PM

    You can write the data out to the shared memory, then set a flag in an info object to tell the other processes to use the shared memory data, and not load the data into an internal table.

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    • Nestlé GD Former Member
      Jul 02, 2004 at 09:33 AM

      Hi Bill,

      Just thought I'll add something one of the guys did think up lately.

      They use the serial method of reading data packages to an ODS and in the start rtn. check if its data package 1 and then fill the table. All subsequent packets only read from the table.

      I am not sure of the performance implications, buts its a tradeoff bt memory paging with parallel processes and a single process .

      Mathew