GBLSEC$SDA, UTILITIES, a SDA extension to display info about a global section GBLSEC$SDA is a SDA extension (using the API first documented for VMS V7.2) which displays information about a global section including the name of the file associated with it and the processes mapped to it. GBLSEC$SDA can be used to look at a crash dump or at a running system. See AAAREADME.TXT for more information.