In keeping with our commitment to our clients our Engineering team recently provided a new tool that will help in the migration from BDAM/EXCP to VSAM LDS (linear datasets). The VSAM Linear Dataset project has been in the works for over 2.5 years and the last major segment “Support migration of LXX to VSAM LDS” was completed and delivered with PTF LU11503 on February 13th, 2024.
The first clients adopting this new initiative (EXCP/BDAM to VSAM LDS) went through a lengthy process requiring assistance in doing so. Of course, this is a major endeavor for sites that carry many databases and large files. There’s a major planning effort to be made:
Yes, not only is this time consuming, but it could also have an adverse effect if these functions are not planned correctly.
The advantages as to what this initiative brings to the client far outweighs any of the above-mentioned cons.
Now, getting to the base topic at hand which is the Migration Tool. In order to lighten the load from this implementation process Engineering has developed this “VSAM Migration tool”.
The VSAM Migration tool assists the DBAs and SYSPROGS by generating the JCL to migrate both the Indexes and Data Areas. It has the ability to perform the migration process for one DBID to many DBIDs in a single run. The tool is using the information from the CXX to generate the JCL. To include space allocations, block size, record length, area and table names. It builds the VSAM clusters as well as the DBUTLTY jobs that perform whatever function is required. It also has the ability based on parameters to perform either Legacy processes (DB shutdown) or New 24X7 processes such BA24 (Block Alter) TM24 (Table Move) and/or Online Area Move.
The following two PTFs must be applied to implement the Migrate tool.
LU14458 - Delivers the code for the Migrate function
LU14516 - Delivers the JCL model members for DBUTLTY function Migrate
Or you can post the Levet Set PTF 15.1.06 which will bring you current: LU16053
The following two APARS will also be required if performing 24X7 utilities:
LU16424 - Removes “NO-OAM” restriction after BA24
LU16700 - Removes OLREORG restriction after BA24
For next steps in the process, check out article 2 of 3 in the series: Datacom VSAM Migration Tool – Planning (Coming Soon).
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