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The IBM team may need your help to refine the ideas so they may ask for more information or feedback. The product management team will then decide if they can begin working on your idea. If they can start during the next development cycle, they will put the idea on the priority list. Each team at IBM works on a different schedule, where some ideas can be implemented right away, others may be placed on a different schedule.
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Some ideas can be implemented at IBM, while others may not fit within the development plans for the product. In either case, the team will let you know as soon as possible. In some cases, we may be able to find alternatives for ideas which cannot be implemented in a reasonable time.
A description of Oracle's 'multi-version read consistency' can be found here: http://www.ss64.com/orasyntax/10locking.html. Even DB2's most liberal CS isolation is more strict then this. [update 04-27-2009]: Support for isolation level 3 queries that do not require a table-level lock or readers blocking writers - Oracle style reads from logs. This feature is not whats coming in Cobra (v97). IBM is providing a concurrency semantics in Cobra (v97) but not a RR consistent read because data can change after the query starts; today we use a combination of replication and lock table fast due to no row locks; new version of MS SQL, PostgreSQL also support this required for CRM; SAP uses its own internal lock manager because they use UR; (follow-up with greater detail on spec)
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