• When the pdlogswap command is used to swap system log files, the percentage of free area for system log files decreases. If the number of system log files is small, care is required because the amount of log information increases dramatically.
• Carefully consider the advisability of executing the pdlogswap command consecutively, because the percentage of free area for system log files decreases.
• When an error occurs in a swappable target file, the percentage of free area for system log files decreases. If the number of system log files is small, care is required because the percentage of free area decreases dramatically.
• If HiRDB terminates abnormally while it is restarting, the HiRDB restart must be performed again. Because availability of swappable target system log files is even more important in this circumstance, an area insufficiency for system log files might cause HiRDB to terminate abnormally. When you design your system log files, you must take into account abnormal situations such as this, and you must realize that using the function for monitoring the free area for system log files does not prevent insufficiencies from occurring.

When the pdlogcls command is used to close a swappable target file, the percentage of free area for the system log files decreases. If this causes the percentage of free area to fall below the warning value, the specified file will not close. In such a case, the KFPS01280-E will be output (with reason code 712) and the pdlogcls command will terminate abnormally.

If the function for monitoring the free area for system log files and the system log file automatic extension facility are being used simultaneously, and if there is a swappable system log file, the system log file automatic extension facility is applied. If there is no swappable system log file, the function for monitoring the free area for system log files is applied. For details about the system log file automatic extension facility, see 3.10 Using the system log file automatic extension facility.