Options are defined using keys or properties. Every key has a name and a value, delimited by an equals sign (=). The key name appears to the left of the equals sign. Key names are not case-sensitive. Unless otherwise noted, values are not case-sensitive.

Key	Value Description
timeout	Specify default lock timeout in seconds.
time_zone	Specify current time zone.
storage	Specify database storage mode.
cache_size	Specify cache size.
item_format	Specify row storage form.
locale	Specify database locale.
error_format	Specify error message format.
durability	Specify database transaction safety level.
pack_write_chunk_size	The abstract size of the transaction chunk written to the pack.
pack_file_size	Specify pack file maximum size.
db_size	Specify the maximum database size allocation.
vacuum_percentage	Specify the vacuum trigger level for pack files.
vacuum_write_chunk_size	Specify the vacuum scan size for pack files.
vacuum_read_chunk_size	Specify the vacuum write size for pack files.
idindex_flush_threshold_on_close	Specify the threshold for flushing the ID-index when the last database user closes the database.
idindex_flush_threshold	Specify the threshold for flushing the ID-index.
idindex_cache_size	Specify the size of the ID-index cache in byte.