18.1 Functions of the database copy utility

Executor: HiRDB administrator
The HiRDB administrator must periodically back up databases to protect against possible database errors. To back up a database, use the database copy utility (the obtained backup can be used only to restore the same HiRDB's database). To restore the database due to a disk error, etc., use the created backup copy as an input to the database recovery utility (pdrstr command) to restore the database. Figure 18-1 shows an overview of database recovery.

Figure 18-1 Overview of database recovery

[Figure]