DSNB302I csect-name GROUP BUFFER POOL gbpname IS ALLOCATED IN A VOLATILE STRUCTURE
Explanation
The Db2 group buffer pool structure is volatile.
One Db2 member issues this message whenever the structure has the volatile attribute. Db2 detects this either on the first connection to the group buffer pool or when the attribute changes later. Db2 always requests nonvolatile group buffer pools but allows allocation in a volatile structure if that is all that is available.
System action
Db2 processing continues.
System programmer response
To cause the group buffer pools to
be allocated in nonvolatile coupling facilities, ensure that:
- At least a subset of your coupling facilities are configured correctly for nonvolatility.
- The MVS CFRM policy correctly specifies the nonvolatile coupling facilities in the preference list for the group buffer pool coupling facility structures.
Even when these things are correctly done, there might
be instances when a suitable coupling facility in the preference list
cannot be found (for example, not enough free space), and therefore
allocation occurs in a different coupling facility. MVS tries to allocate the structure in the facility
that best meets the structure allocation request as follows:
- 1st choice:
- Coupling facility that meets the volatility requirement, the space requirement, and the exclusion list requirement.
- 2nd choice:
- Coupling facility that meets the volatility requirement and the storage requirement.
- 3rd choice:
- Coupling facility that has the best fit (most available free space) even though this might be less than the amount requested.
- 4th choice:
- Structure cannot be allocated.
IFCID 0250, if activated, contains a list of the coupling facilities on which allocation was attempted.