Prerequisites

Just like the standard BDLS transaction, no other activities should be performed in any part of the system including communication with other systems. Equally, all IDocs in the system should have been processed. You must run this program within each client that requires it as the logical system ID usually contains the client number.

Some additional recommendation prior to execution are:

1. Change Operation Mode: DIffuser and hence System Copy GT use background processes to perform the parallel logical system conversion. Please increase the number of background work-processes that are available in the SAP system prior to execution (appropriate to the size of the system)
2. Redo Log Backups: It is recommended to make sure there is enough space for redo logs in the targeted system
3. Multiple system name conversions: In case of multiple logical system name conversion it is ideal to exclude big tables which are not relevant to the additional name conversions. this can help performance significantly, but it is by no means mandatory
4. Oracle DB: If your system uses an Oracle database please make sure that there is enough tablespace available prior to the system conversion
5. BDLS Notes: Please make sure to apply any OSS notes you already use to run standard BDLS. System Copy GT makes calls to SAP standard code and this will ensure that we avoid possible issues in these cases
6. Disable archive logs: It is recommended to disable archive logs, the generation of logs can significantly slow the database update down
7. Use Server Groups: Jobs scheduled within a server group are given higher priority (job class A). In addition, if the specified server group contains an application server that runs on the database the jobs are planned there, this reduces network load significantly

You must also have installed Diffuser as well as System Copy GT in that order. These will have been provided by BTI in the form of a transport request file. The only mandatory requirement is to then have the license key installed for the given SAP system. This will be provided by BTI as well.