System Administration Guide: Naming and Directory Services (NIS+)

NIS+ Variable NIS_PATH

Make sure that your NIS_PATH variable is set to something clean and simple. For example, the default: org_dir.$:$. A complex NIS_PATH, particularly one that itself contains a variable, will slow your system and may cause some operations to fail. (See NIS+ NIS_PATH Environment Variable for more information.)

Do not use nistbladm to set nondefault table paths. Nondefault table paths will slow performance.