Conditional restart records

In addition to information describing the active and archive logs, the BSDS contains two queues of records that are associated with conditional restart.

The two queues are:

• A wrap-around queue of conditional restart control records. Each element in the queue records the choices that you made when you created the record and the progress of the restart operation that it controls. When the operation is complete, the use count is set at 1 for the record, and the record is not used again.
• A queue of checkpoint descriptions. Because a conditional restart can specify use of a particular log record range, the recovery process cannot automatically use the most recent checkpoint. The recovery process must find the latest checkpoint within the specified range, and that checkpoint queue is then used for that purpose.

You can use the utility DSN1LOGP to read information about checkpoints and conditional restart control records.