Why is the RH-SSO admin UI very slow when using about 300 realms?

Solution Verified - Updated -


  • When using about 300 realms UI is very very slow, and it takes more seconds to view all realms.
  • RH-SSO 7.1.0 fails to start when using a high number of realms (about 300+ realms).
  • How many realms are supported in a given RH-SSO deployment ?
  • The migration from RH-SSO 7.3 to RH-SSO 7.4 takes quite some time depending on the number of realms in the installation:
    • 120 realms: 17min
    • 60 realms: 5min
    • 30 realms: 1min 40sek


  • Red Hat Single Sign-On ( RH-SSO) 7.x

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