Why does my backup inc generate IO DONE waits?
when executing the backup inc of my database through rman and commvault, it generates waits (Waiting: System I / O) (IO DONE), a backup with acceptable times has a duration of 15 hours, but sometimes it has been extended up to 24 hours, could you help me or advise me to try to solve my problem?
database size 39 Tb
database version Enterprise 12.2.0.4
last changes in the database:
SQL> show parameter filesystem
NAME TYPE VALUE
------------------------------------ -------------------------------- ------------------------------
filesystemio_options string SETALL
SQL> show parameter async
NAME TYPE VALUE
------------------------------------ -------------------------------- ------------------------------
disk_asynch_io boolean TRUE
tape_asynch_io boolean TRUE
SQL> show parameter BACKUP_TAPE_IO_SLAVES