Within RC/Update for Db2 for z/OS (RCU), attempting to ALTER a segmented tablespace to a partition-by-growth (PBG) and
the following error occurs:
IRX0251E User abend code 0070, reason code 00000012.
IRX0255E Abend in host command ISPEXEC or address environment routine TSO.
Verify OMVS access under Edit the OFS member in the documentation:
OFS uses USS provided POSIX services. Access to OMVS is required. If the NO-OMVS setting in ACF2
or NOUID setting in RACF is specified, contact an administrator to remove this setting and enable access to OMVS.
To avoid CEE errors, use 64-bit LE options in the CEEOPTS DD statement instead of 31-bit LE options.
If the NO-OMVS setting is not the problem, check that the LOGON ID has the required OMVS GROUP definition in ACF2.