In the side-by-side migration process, the administrator uses the wizard-based installation program to install a stand‑alone BIRT iHub system with an embedded OOTB PostgreSQL RDBMS in a path separate from an earlier iServer Release 11 installation. After installing, the administrator reconfigures the BIRT iHub system to use the RDBMS in the iServer Release 11 system.

BIRT iHub supports using the embedded OOTB PostgreSQL RDBMS or an alternative RDBMS, such as DB2, Microsoft SQL Server, Oracle, or a pre-existing PostgreSQL system. For more information on installing a BIRT iHub system that uses one of these RDBMS, see Chapter 3, “Installing BIRT iHub using an alternative database.”