Sometimes this can happen during ipl because TCP/IP for whatever reason is delayed in starting. OMVS and ZFS will not fully initialize until the TCP/IP stack is up. Depending on the number of subsystems you are trying to start, (you are starting CICS, IMS, and DB2,) you can see this problem. I avoid it by defining a second spool volume. This is a relatively easy thing to do. If you don't want a second spool volume, you can delay the start of your subsystems until after you ipl your system and the network and OMVS and ZFS are up all the way. If you don't ipl frequently and your system is up for days, (like mine is,) its a good idea to add a $P command to your daily automation to ensure spool data does not accumulate.
RDzJohn
RDzJohn