How long since the last time the tape cartridge have been used

A tape cartridge is a mechanical product requiring physical maintenance once in a while. All you need is run a query for how long since the last time the tape cartridge have been used.

select volume_name,date(last_write_date) as write_date,date(last_read_date) as read_date from volumes where stgpool_name='LTO4POOL' order by read_date asc

You can check the tape cartridge for inconsistencies.

audit volume volumename fix=no