Scalable Database Server, HiRDB Version 8 System Definition

[Contents][Index][Back][Next]

3.3.5 Operands related to full recovery processing

11) pd_max_recover_process = concurrently-executable-full-recovery-processes-count
[Figure]<unsigned integer>((1-10))
Specifies the number of processes to be recovered during full recovery processing. For a HiRDB/Parallel Server, this operand specifies the number of processes to be recovered per server (dictionary server or back-end server).
Condition
Parallel input/output processing is not performed for regular files.
Specification guidelines
  • The value to be specified depends on the file type:
    Condition Specification guideline
    Character special files There are at least 10 character special files (per server) that define RDAREAs 10
    There are fewer than 10 character special files (per server) that define RDAREAs Number of character special files
    Regular file 1
  • Increasing the value of this operand increases the input/output concurrency during full recovery processing, and thus can shorten the recovery time. However, because a number of processes equaling value-of-this-operand [Figure] server-count are started, determine a value by taking the aforementioned specification value guideline and HiRDB resources into consideration.