Resource usage and system limits

Developer for z/OS® uses a variable number of system resources such as address spaces, and z/OS UNIX processes and threads. The availability of these resources is limited by various system definitions. To estimate the usage of key resources so that you can plan your system configuration, see "Tuning considerations" in the IBM® Explorer for z/OS Host Configuration Reference. Developer for z/OS can run in either 31-bit or 64-bit mode, changing the storage resource limitations drastically.