When I try to run a backup of the database security2.fbd the following error message is displayed:

gbak: ERROR: no permission for direct access to security database / opt/firebird/security2.fdb
gbak: Exiting before completion due to errors

the command I run to start the backup is:

gbak -b -g -t -user "SYSDBA"

gbak -b -g -t -user "SYSDBA" -pas "123456" /opt/firebird/security2.fdb /tmp/backup_security2.gbk


Thanks a lot.