Where
Configuration guide
Rev.: 8062923
21.10.1. Configure Oracle iPlanet Web Server to use the NSAPI Connector / 21.10. ORACLE NSAPI CONNECTOR / 6. Extract the archive....

Problem
Archive with nsapi connectors has different directory structure then EAP. It is not possible simply extract them to EAP directory.

Solution
Replace step 6 with something like following. "Extract file nsapi_redirector.so located in lib/ or lib64/ directory into IPLANET_CONFIG" directory.