We have provided MSSQL and Oracle database scripts for the legacy audit trail database/schema to speed up the migration by removing unnecessary indexes and creating new optimized indexes. Scripts are available in the configuration folder of the audit trail migration:

\server\configuration\HPM\audittrail\migration\dbPreparationScripts

The corresponding script has to be executed on the legacy audit trail database/schema before migration can be started. Please note that this can take a few hours, depending on the database size.