TSO region size
The
minimum supported TSO region size for FM/Db2 is 16MB. While
FM/Db2 can operate with region sizes in the range 4MB - 16MB, these region
size specifications restrict the amount of below the line
storage.
If you encounter storage-related abends running with TSO region sizes
less than 16 MB, attributable to below the line
storage shortages,
the remedy is to increase the TSO region size.
When processing large Db2® objects, significant amounts of 31-bit storage may be required.
For most applications a TSO region size of 32MB is a suitable starting point, this should be increased if there is a need to process large Db2® objects.
When using the GEN prefix command, the minimum suggested TSO region size is 32MB. Increase this to 64MB when processing large databases.
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