Server_Gmd_Dir_Name

The Server_Gmd_Dir_Name option is a named option that specifies the name of the sub-directory used to store messages for file-based GMD. This sub-directory is created within the directory specified by the Ipc_Gmd_Directory option. Messages sent with GMD are saved on disk, in this sub-directory, to be resent in the event of a delivery failure. File-based GMD is slower than memory-based GMD because of the time needed to write the messages to disk, but it is more reliable in situations like a power outage. The default for this option is UNKNOWN and results in the sub-directory being named after the RTclient’s unique subject. Read and write access to the directory you specify is required. For more information, see Ipc_Gmd_Directory.

This option is required if you are using multiple RTserver connections (multiple RTserver connections instead of a single global connection) that share the same unique subject. By default, the GMD sub-directory is named after the RTclient’s unique subject. If an RTclient is using multiple connections with file-based GMD, and each connection is using the same unique subject, file conflicts in the GMD sub-directory occur. To avoid this, you must set the Server_Gmd_Dir_Name named option, using setnopt, to a different value for each connection.

Multiple RTserver connections can share the same unique subject only if each connection is connecting to a different RTserver cloud or if they have different projects.