Sam Dave wrote:
Can two or more mdb_env_open() be called on the same file/directory (in same program or multiple programs)?
In the same program: no, read the Caveats http://www.lmdb.tech/doc/ In multiple programs: yes
Can two or more mdb_dbi_open() be called to open ultimately the same database?
This is explicitly documented http://www.lmdb.tech/doc/group__mdb.html#gac08cad5b096925642ca359a6d6f0562a
What are some ramifications of doing so (and of course working with various readonly/readwrite transactions, etc.)
I don't see much written about this in documentation.
Read more carefully.
- Samuel