The number of open pipes is limited to one per instance of the Teradata Access Module for Named Pipes under the following condition:
- When you specify a fallback data file name
The one-to-one relationship between open pipes and fallback data files imposes this restriction. To avoid this constraint, allow the Teradata Access Module for Named Pipes to assign the fallback data file names by specifying only a directory name or accepting the default directory name for fallback data files.
There must be no file in the directory in which the named pipe is created for data transfer that has same name as the named pipe.