SAP HANA 2.0 Administration · Table Internals: Stores, Compression, Partitioning & MVCC

A DBA reads 'merge waiting for token' and concludes the merge is hung. What do merge tokens actually limit, and why is the waiting normal?

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More in Table Internals: Stores, Compression, Partitioning & MVCC

A row-store table has a single-column integer sequence key; another has a composite character key. Which gets plain BTREE and which gets CPBTREE, and why does that make CPBTREE the de-facto default for SAP?

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A hard merge and a forced merge both override automerge — but only one can still get stuck. Which, and what does each actually bypass?

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