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AdministeringIn addition to administering the database server, you can tune performance, replicate data, and archive data.
System administrationThese topics contain concepts, procedures, and reference information for database and database server administrators to use for managing and tuning HCL OneDB™ database servers.
Administrator's GuideThe HCL OneDB™ Administrator's Guide provides the information required to administer HCL OneDB™.
Distributed data
Multiphase commit protocols
Independent actions
Possible results of independent action

Possible results of independent action

As mentioned earlier, not all independent actions are in opposition to the two-phase commit protocol. Independent actions can yield the following three possible results:

Successful completion of the two-phase commit protocol
An error condition
A heuristic decision

If the action is not in opposition to the two-phase protocol, the transaction either commits or rolls back normally. If the action ends the global transaction prematurely, an error condition results. Ending the global transaction at the coordinator is not considered a heuristic decision. If the action is in opposition to the two-phase commit protocol, a heuristic decision results. All these situations are explained in the sections that follow.