gtps4m0kSystem Generation

Post-Cutover Activities

Once the new system is operational, it must be maintained, whether it is a test system or a production system. APAR fixes (normally distributed via PTF tapes) need to be applied on a continual basis and application programs and database records may require updating on the same basis.

System modifications are normally done in 1052 state. It is highly recommended that all changes be first validated in a test system prior to putting them in an operational system. The following facilities may be used to aid in this effort: