I aborted a Block Size Alter (BA24) running on a Datacom area. They I tried to restart the BA24 on the same area via DDUTILTY but the job failed with:
**** ERROR **** DB RETURN CODE = 94 (177) BLOCK ALTER 24X7
On the MUF joblog I see:
DB02831E - BLOCK ALTER 24X7 nnn aaa ERROR COMPLETE, OPEN
The error is that you are doing a BA24 after a previous BA24 for the same area without the base being closed and reopened.
Close and reopen the involved area to restart the Block Size Alter process