Hi Jose,
Informix 12.10 will probably be installed on Red Hat 8.
However, the following document states that Red Hat 8 is supported since Informix Server version 14.10.
If you want to use version 12.10, it is better to use Red Hat 7. Or ask IBM (or HCL) if Informix 12.10 can be installed on Red Hat 8.
https://www.ibm.com/support/pages/informix-server-system-requirements------------------------------
SangGyu Jeong
Software Engineer
Infrasoft
Seoul Korea, Republic of
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