The size of chunks for dbspaces is 4 terabytes for a 2-kilobyte page. Chunks can reside anywhere in a 64-bit address space.
To activate the creation of large chunks, you must use the onmode utility. The onmode utility uses a -BC flag to control the availability of large chunks, chunks greater than 2 gigabytes.
When the database server is first migrated to a new version of Dynamic Server, large chunks are not allowed. Run onmode -BC 1 to allow large chunks to be created.
If necessary to convert older versions of Dynamic Server to the large chunk format, execute onmode -BC 2.
If the root chunk is a large chunk at the time the server starts, the onmode -BC 1 step is skipped and -BC 2 mode starts automatically.
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