Native VSAM Considerations › CA IDMS/DB Native VSAM Definitions › DMCL Definition

DMCL Definition

The DMCL module establishes the correspondences at runtime between physical characteristics of the database and the native VSAM files. You describe native VSAM files to be accessed by CA IDMS/DB in the DMCL BUFFER statements with the following:

• PAGE CONTAINS specifies the size of the largest control interval of any native VSAM file associated with the buffer
• BUFFER CONTAINS specifies the number of I/O buffers in the buffer pool to be used to transfer records between memory and auxiliary storage
• NATIVE VSAM specifies that the buffer pool is for use exclusively with native VSAM files