Sidchg Key __exclusive__ File

ADDUSER userid ... SIDCHG | Aspect | Without sidchg | With sidchg | |--------|----------------|---------------| | Session ID change | Requires password/passphrase | Allowed without re-authentication | | Suitability | General users, high-security accounts | Trusted processes, service accounts, automation | | Risk | Lower risk of unauthorized context switching | Higher risk if user ID is compromised |

ALTUSER userid NOSIDCHG It can also be specified during initial user creation: sidchg key

ALTUSER BATCHSVC SIDCHG Then in batch JCL or REXX: ADDUSER userid