NAME

       nbackup - Physical backup manager for Firebird

SYNOPSIS

       nbackup [option...] -l|-u|-f database
       nbackup [option...] -b level database file
       nbackup [option...] -r database file0 [file1...]

DESCRIPTION

       nbackup allows making incremental backups of firebird databases. It also allows database files to be
       locked for copying with OS tools like cp(1).

COMMANDS

       -l database
       -lock database
           Locks database for filesystem copy.

           Options of the -lock command:

           -s
           -size
               Print database size (in database pages) after locking.

       -un database
       -unlock database
           Unlocks previously locked database.

       -f database
       -fixup database
           Fixup database after filesystem copy. This needs to be done on the target database before usage.

       -b level database file
       -backup level database file
           Create incremental backup of level level. Level 0 means full backup. Level N includes all the changes
           since the last backup of level N. file may be "stdout" meaning to write the backup data to the
           standard output.

           Additional options to the -backup command:

           -d on|off
           -direct on|off
               Turns on or off direct I/O during database backup.

               Direct I/O may be useful when database is much larger that RAM, because in that case using
               buffered I/O may cause replacing useful cache contents with database file contents, which are
               generally read only once.

       -r database file0 [file1...]
       -restore database file0 [file1...]
           Restore incremental backup. file0 is the level 0 backup, file1 is the level 1 backup and so on.

           Additional -restore options:

           -de command
           -decompress command
               Decompress backup file contents using the given command.

           Note: -restore should be the last argument to nbackup followed only by database and file names. All
           other options must precede -restore or will be interpreted as backup file names.

COMMON OPTIONS

       -u user
       -user user
           User name for connecting to the firebird server.

       -p password
       -password password
           Password for connecting to the firebird server.

       -fetch_password file
           Read password from specified file.

       -nod
       -nodbtriggers
           Do not run database-level triggers.

SEE ALSO

       gbak(1)

       Additional documentation about nbackup and other Firebird utilities can be found on the Firebird Project
       website, <http://www.firebirdsql.org>.

AUTHOR

       Original idea is of Sean Leyne sean@broadviewsoftware.com.  Designed and implemented by Nickolay
       Samofatov skidder@bssys.com.  This work was funded through a grant from BroadView Software, Inc.

       This manual page was written by Damyan Ivanov dmn@debian.org for the Debian project. Permission is
       granted to use this document, with or without modifications, provided that this notice is retained. If we
       meet some day, and you think this stuff is worth it, you can buy me a beer in return.