E.4 MON$DATABASE

MON$DATABASE displays the header information from the database the current user is connected to.

Column NameData TypeDescription

MON$DATABASE_NAME

VARCHAR(255)

The file name and full path of the primary database file, or the database alias

MON$PAGE_SIZE

SMALLINT

Database page size in bytes

MON$ODS_MAJOR

SMALLINT

Major ODS version, e.g., 11

MON$ODS_MINOR

SMALLINT

Minor ODS version, e.g., 2

MON$OLDEST_TRANSACTION

BIGINT

The number of the oldest [interesting] transaction (OIT)

MON$OLDEST_ACTIVE

BIGINT

The number of the oldest active transaction (OAT)

MON$OLDEST_SNAPSHOT

BIGINT

The number of the transaction that was active at the moment when the OAT was started — oldest snapshot transaction (OST)

MON$NEXT_TRANSACTION

BIGINT

The number of the next transaction, as it stood when the monitoring snapshot was taken

MON$PAGE_BUFFERS

INTEGER

The number of pages allocated in RAM for the database page cache

MON$SQL_DIALECT

SMALLINT

Database SQL Dialect: 1 or 3

MON$SHUTDOWN_MODE

SMALLINT

The current shutdown state of the database:

0 - the database is online 1 - multi-user shutdown 2 - single-user shutdown 3 - full shutdown

MON$SWEEP_INTERVAL

INTEGER

Sweep interval

MON$READ_ONLY

SMALLINT

Flag indicating whether the database is read-only (value 1) or read-write (value 0)

MON$FORCED_WRITES

SMALLINT

Indicates whether the write mode of the database is set for synchronous write (forced writes ON, value is 1) or asynchronous write (forced writes OFF, value is 0)

MON$RESERVE_SPACE

SMALLINT

The flag indicating reserve_space (value 1) or use_all_space (value 0) for filling database pages

MON$CREATION_DATE

TIMESTAMP

The date and time when the database was created or was last restored

MON$PAGES

BIGINT

The number of pages allocated for the database on an external device

MON$STAT_ID

INTEGER

Statistics identifier

MON$BACKUP_STATE

SMALLINT

Current physical backup (nBackup) state:

0 - normal 1 - stalled 2 - merge

MON$CRYPT_PAGE

BIGINT

Number of encrypted pages

MON$OWNER

CHAR(63)

Username of the database owner

MON$SEC_DATABASE

CHAR(7)

Displays what type of security database is used:

Default - default security database, i.e. security4.fdb Self - current database is used as security database Other - another database is used as security database (not itself or security4.fdb)

MON$CRYPT_STATE

SMALLINT

Current state of database encryption

0 - not encrypted 1 - encrypted 2 - decryption in progress 3 - encryption in progress

MON$GUID

CHAR(38)

Database GUID (persistent until restore/fixup)

MON$FILE_ID

VARCHAR(255)

Unique ID of the database file at the filesystem level

MON$NEXT_ATTACHMENT

BIGINT

Current value of the next attachment ID counter

MON$NEXT_STATEMENT

BIGINT

Current value of the next statement ID counter

MON$REPLICA_MODE

SMALLINT

Database replica mode

0 - not a replica 1 - read-only replica 2 - read-write replica