Edit File: freetds.conf.5
.Dd May 2, 2017 .Os FreeTDS 1.1.24 .Dt FREETDS.CONF "FreeTDS 5" "FreeTDS Reference Manual" . .Sh NAME .Nm freetds.conf .Nd configuration file for FreeTDS . .Sh SYNOPSIS The .Pa freetds.conf file describes Sybase and Microsoft database servers to the FreeTDS library. It comprises sections headed by a servername, followed by a list of connection properties denoted as name-value pairs. Defaults are defined via a .Bq global section. This file supersedes the .Pa interfaces file that Sybase defines for the same purpose, although the latter is still supported. . .Sh DESCRIPTION A section begins with a servername \(em the name of the server \(em in square brackets. The servername is chosen at the client's descretion. (One exception: with Sybase ASA the servername must match the database name to be used.) .Pp Sections contain properties, one per line, in the form .Pp .Dl name = value .Pp where .Ar name is the connection property to be described. Servernames and properties are not case sensitive. Values are case-preserving i.e., copied literally. Comments begin with either a semicolon .Pq So ; Sc or pound sign .Pq So # Sc and continue to end of line. Blank lines are ignored. Whitespace surrounding the .So = Sc is ignored. . .Sh PROPERTIES .Bl -tag -width "emulate little endian" -compact . .It client charset encoding of client data; overrides locale(1) settings .Bl -tag -width "default:" -compact .It Domain: iconv character set names .It Default: ISO-8859-1 .El . .It connect timeout seconds to wait for response from connect request .Bl -tag -width "default:" -compact .It Domain: 0 to MAX_INT .It Default: none .El . .It debug flags logging granularity .Bl -tag -width "default:" -compact .It Domain: 32-bit integer .It Default: 0x4fff .El . .It dump file specifies location of a logfile and turns on logging .Bl -tag -width "default:" -compact .It Domain: valid file name .It Default: none .El . .It dump file append log data appended to file instead of re-writing for each connection .Bl -tag -width "default:" -compact .It Domain: yes/no .It Default: no .El . .It emulate little endian forces big endian machines to act as little endian to communicate with Microsoft Servers .Bl -tag -width "default:" -compact .It Domain: yes/no .It Default: no .El . .It encryption .Bl -tag -compact .It Em off disables encryption .It Em request use if available (default when tds version greater than 7.0) .It Em required allow encrypted connections only .El . .It host Name of the host the server is running on. .Bl -tag -width "default:" -compact .It Domain: host name or IP address .It Default: SYBASE .El . .It initial block size maximum size of a protocol block .Bl -tag -width "default:" -compact .It Domain: multiple of 512 .It Default: 512 .El . .It instance name of Microsoft SQL Server instance to connect to (supersedes .Em port ) .Bl -tag -width "default:" -compact .It Domain: instance name .It Default: none .El . .It port port number that the server is listening to .Bl -tag -width "default:" -compact .It Domain: any valid port .It Default: TDS 5.0, 5000; TDS 7.0 and up, 1433 .El . .It tds version TDS protocol version to use .Bl -tag -width "default:" -compact .It Domain: 4.2, 5.0, 7.0, 7.1, 7.2 .It Default: .Fl -with-tdsver value (5.0 if unspecified) .El . .It text size default value of TEXTSIZE, in bytes .Bl -tag -width "default:" -compact .It Domain: 0 to 4,294,967,295 .It Default: 4,294,967,295 .El . .It timeout seconds to wait for response to a query .Bl -tag -width "default:" -compact .It Domain: 0 to MAX_INT .It Default: none (wait forever) .El . .El .Pp Do not define both .Fa port and .Fa instance Ns \&. One implies the other. .Pp Boolean property values may be denoted as on/off, true/false, or 1/0. . .Ss DEBUG FLAGS The log's granularity can be controlled with the .Em debug flags property. .Bl -column -offset indent ".Sy 0x8000" ".Sy show source level info (source file and line)" .It Sy Value Ta Sy Meaning .It Li \ \ 0x02 severe error .It Li \ \ 0x04 error .It Li \ \ 0x08 warning .It Li \ \ 0x10 network .It Li \ \ 0x20 information level 1 .It Li \ \ 0x40 information level 2 .It Li \ \ 0x80 function trace and info .It Li 0x1000 show pid .It Li 0x2000 show time .It Li 0x4000 show source level info (source file and line) .It Li 0x8000 thread id (not implemented). .El . .Sh NAMES AND LOCATIONS The file is normally named .Pa /etc/freetds.conf or .Pa ${HOME}/.freetds.conf . That name can be overridden with the FREETDSCONF environment variable. .Pp FreeTDS will search conf files for a servername in the following order: .Bl -enum -offset indent -compact .It a filename set programatically via dbsetifile() that is in .conf format .It a filename in the environment variable FREETDSCONF that is in .conf format .It .Pa ${HOME}/.freetds.conf if extant .It .Pa /opt/alt/freetds11/etc/freetds.conf .El .Pp The search stops with the first file containing the servername. .Pp If no conf file is found, FreeTDS searches for an .Pa interfaces file in the following order: .Bl -enum -offset indent -compact .It a filename set programatically via dbsetifile() that is in .Pa interfaces format .It .Pa ${HOME}/.interfaces .It .Pa $SYBASE/interfaces (where .Ev $SYBASE is an environment variable) .El .Pp If the requested servername is not found in any configuration file, the fallback mechanism is: .Bl -enum -offset indent -compact .It attempt to convert the name to an IP address with inet_addr(3), else .It attempt to convert the name to an IP address with gethostbyname(3), else .It attempt to look up the literal name .Dq SYBASE .El . .Sh ENVIRONMENT .Bl -tag -width "TDSDUMPCONFIG" -compact .It Ev FREETDSCONF overrides name and location of the system-wide conf file .It Ev TDSDUMP overrides the name and location of the FreeTDS log file .It Ev TDSDUMPCONFIG specifies a name and location of a file that logs the search of configuration files .It Ev TDSHOST overrides the host property .It Ev TDSPORT overrides the port property .It Ev TDSQUERY synonym for DSQUERY, the default servername .It Ev TDSVER overrides the version specified in the freetds.conf .El .Pp The environment variables .Ev TDSVER, Ev TDSDUMP, Ev TDSPORT, Ev TDSQUERY, and Ev TDSHOST override values set by a .conf or .Pa interfaces file. . .Sh FILES .Pa /opt/alt/freetds11/etc/freetds.conf , ${HOME}/.freetds.conf . .Sh SEE ALSO .%B FreeTDS User Guide . .Sh HISTORY \.conf files first appeared with version 0.53 of FreeTDS.