Export/Import memory

[sukhdev_kaloor]

Hi,

what is the difference between Export/Import buffer

and Exp./Imp.SHM buffer

regards,

dev

[Former Member]

Hi Sukhdev,

Data clusters that are exported to the export/import buffer by an ABAP program are only available (for import) by other ABAP programs in the current call sequence. An example of when this would be used is to pass data between programs executing in a particular user session.

Data clusters that are exported to export/import buffer SHM by an ABAP program are available to all programs executing on the application server. An example of when this would be used is when you require many users and programs to have access to a piece of data stored in memory.

We have used the latter to store an internal table in memory that was built from data in the database. Previously, many programs were accessing the same data over and over, and causing high I/O activity in the database. Now, on a daily basis, the data is read from the database and stored in an internal table in the export/import SHM area.

Gary

[Former Member]

I'm using export/import from buffer statement in a transformation in BW. Because it is only avaliable for current call sequence, I thought it would be removed from the buffer next time a DTP runs to load data. Yet, when I run the DTP the next day to load data, the internal table is stil lin the export/import buffer. So what is the definition of "current call sequence"? When does the data cluster get removed?

Regards,

[Former Member]

I'm using export/import from buffer statement in a transformation in BW. Because it is only avaliable for current call sequence, I thought it would be removed from the buffer next time a DTP runs to load data. Yet, when I run the DTP the next day to load data, the internal table is stil lin the export/import buffer. So what is the definition of "current call sequence"? When does the data cluster get removed?

Regards,

Dae