Improve Synchronization Performance by Reducing the Log Record Size

Improve synchronization performance and free SAP Mobile Server resources by deleting log records from SAP Mobile Server and the client when no longer needed.

A large log record table can negatively impact client synchronization performance. Each package contains a single log record table that consists of:

SAP Mobile Server operation replay logs – downloaded to the device when the application synchronizes. SAP Mobile Server generates a log record if the operation replay fails, or succeeds but results in a warning.
Client logs generated by the application – uploaded from the device to SAP Mobile Server for audit and logging purposes.

If the application and SAP Mobile Server do not delete these log records, the log record table continues to grow.

Unrestricted growth of the log record table eventually affects synchronization performance. You can view client log records from SAP Control Center; however, this displays only active log records (that is, those that have not been logically deleted). A logically deleted log record is marked for deletion but retained until the application downloads the delete record and deletes the copy from the device. Once SAP Mobile Server confirms that the application has downloaded the delete, the inactive log record can be physically removed from SAP Mobile Server.

Determining the Log Record Size
Use Sybase® Central to query the database of a given SAP Mobile Server to determine the size of the log record.
Reducing the Log Record Size
Use SAP Control Center to delete log record entries by setting a date range window.

Parent topic: Testing Applications