Another way to change the system at an IPL is to tell the system
to select an alternate master catalog. Use one of the following methods:
- Identify the data set that contains the alternate master catalog
on the SYSCAT statement in the LOADxx parmlib member.
- Tell the system to read a member of SYS1.NUCLEUS that is different
from SYSCATLG, the default member. Respond to system message IEA347A
with a two-character suffix. The two characters are appended to SYSCAT
to form the member name that the system is to read.
The system prompts the operator for a SYSCAT suffix only if you:
- Do not specify the SYSCAT statement in LOADxx
- Specify, through the SYSCTL frame, an initialization message suppression
indicator (IMSI) on the LOAD parameter that tells the system to prompt
for the master catalog response.