Displays or changes remote server options.


sp_serveroption [server, optname, optvalue]



is the name of the remote server for which to set the option.


is the name of the option to be set or unset. Table 8-18 lists the option names.

Table 8-18: sp_serveroption options



mutual authentication

Valid for “rpc security model B” only – this option specifies that the local server authenticates the remote server by retrieving the credential of the remote server and verifying it with the security mechanism. With this service, the credentials of both servers are authenticated and verified.

external engine auto start

Specifies that EJB Server starts up each time Adaptive Server starts up. The default is true; starting Adaptive Server also starts up EJB Server.

net password encryption

Specifies whether to initiate connections with a remote server with the client side password encryption handshake or with the normal (unencrypted password) handshake sequence. The default is false, no network encryption.


Component Integration Services only – specifies that access to the server named is read only.

rpc security model A

The default model for handling RPCs. This model does not support mutual authentication, message integrity, or message confidentiality between the local server and the remote server.

rpc security model B

This model results in a single, secure physical connection established between the local and remote servers. Logical connections for each RPC that is executed are multiplexed over the single, secure, physical connection. This model supports mutual authentication, message confidentiality via encryption, and message integrity.

security mechanism

Valid for “rpc security model B” only – this option specifies the security mechanism for the remote server. You must set this option to true to use security model B.


When unset (false), disables the normal timeout code used by the local server, so the site connection handler does not automatically drop the physical connection after one minute with no logical connection. The default is true.

use message confidentiality

Valid for “rpc security model B” only – this option specifies that messages are encrypted when sent to the remote server, and results from the remote server are encrypted.

use message integrity

Valid for “rpc security model B” only – this option specifies that messages between the servers are checked for tampering.

Adaptive Server accepts any unique string that is part of the option name. Use quotes around the option name if it includes embedded blanks.


is true (on) or false (off) for all options except the security mechanism option.

For the security mechanism option, specify the name of the security mechanism. To see the names of the security mechanisms available on a server, execute:

select * from syssecmechs


Example 1

Displays a list of the server options:


Settable server options.

 mutual authentication 
 net password encryption 
 rpc security model A 
 rpc security model B 
 security mechanism 
 use message confidentiality 
 use message integrity 
 net password encryption

Example 2

Tells the server not to time out inactive physical connections with the remote server GATEWAY:

sp_serveroption GATEWAY, "timeouts", false

Example 3

Specifies that when connecting to the remote server GATEWAY, GATEWAY sends back an encryption key to encrypt the password to send to it:

sp_serveroption GATEWAY, "net password encryption", true

Example 4

Specifies that the EJB Server SYB_EJB starts up each time Adaptive Server starts up:

sp_serveroption SYB_EJB, "external engine auto start", true

Example 5

Specifies that the security model for RPCs for the server “TEST3” is security model B.

sp_serveroption TEST3, "rpc security model B", true

Example 6

Specifies that the security model to use for RPCs for “TEST3” is DCE:

sp_serveroption TEST3, "security mechanism", dce

Example 7

Specifies that the local server will check the authenticity of the remote server “TEST3”. With security model B, the remote server will check the authenticity of the local server, whether or not this option is set:

sp_serveroption TEST3, "mutual authentication", true



Only a System Administrator can execute sp_serveroption to set the timeouts option. Any user can execute sp_serveroption with no parameters to display a list of options.

Only a System Security Officer can set the net password encryption, security mechanism, mutual authentication, use message confidentiality, and use message integrity options.

See also

System procedures sp_helpserver, sp_password

Utility isql