A page may be destroyed in the following cases:

• HiRDB was started forcibly after it had terminated abnormally or had been terminated forcibly.
• HiRDB was started by initializing the status files after HiRDB had terminated abnormally or had been terminated forcibly.
• When RDAREAs were recovered during backup acquisition, not all related RDAREAs were recovered. For example, when a table-storage RDAREA was recovered during backup acquisition, an index-storage RDAREA was missed during recovery processing.