sysoledbusers

Contains one row for each user and password mapping for the specified linked server. This table is stored in the master database.

Column name	Data type	Description
rmtsrvid	smallint	SID (security identification number) of the server.
rmtloginame	nvarchar(128)	Name of the remote login that loginsid maps to for linked rmtservid.
rmtpassword	nvarchar(128)	Encrypted password for the specified remote login in linked rmtsrvid.
loginsid	varbinary(85)	SID of the local login to be mapped.
status	smallint	If this value is 1, the mapping should use the user's own credentials.
changedate	datetime	Date mapping information was last changed.