Increase RAMIS database size limit

Document ID : KB000112136
Last Modified Date : 27/08/2018
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Question:
What is the RAMIS database size limit and how to increase the size for a database from the old limitation of 32,767 database blocks?
Environment:
z/OS
Answer:
The maximum number of  RAMIS database blocks limitation was increased from 32,767 to 65,535 database blocks with CA Ramis Version 7.4 and PTFs LO85764 and LO85774.

For example, a 3390 disk device can hold 105 database blocks per cylinder and 7 blocks per track. The maximum number of 3390 cylinders is therefore 624 (65,520 database blocks) or 9362 tracks (65,534 database blocks) or 65,535 blocks.
 
NOTE: A RAMIS database allocation (combination of primary and secondary allocation) should never be allowed to exceed the maximum.

To enlarge an existing database into the new size past 32,767:
-  Run a RAMIS BACKUP against the existing database.
-  Allocate a larger database data set.
-  Run a RAMIS STARTUP n followed by a RAMIS RELOAD of the BACKUP into the larger allocated database. 

For example, a RAMIS database allocated with 400 3390 primary cylinders equates to 42,000 database blocks. The STARTUP n will cause RAMIS to format the 400 cylinders.

    DM0271:  Database formatted for  42000 BLOCKS 

RAMIS ? STAT BASESIZE reflects the current database size.





 
Additional Information:
Refer to CA Ramis Database Design 7.4 SP3 section "Appendix B. Current CA-Ramis Limits"
https://support.ca.com/cadocs/7/b001951e.pdf