请问这个错误是什么意思呢

graffitior

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Welcome to LSNRCTL, type "help" for information.

LSNRCTL> start
Starting /home/oracle/product/10.1.0/db_1/bin/tnslsnr: please wait...

TNSLSNR for Linux: Version 10.1.0.2.0 - Production
System parameter file is /home/oracle/product/10.1.0/db_1/network/admin/listener.ora
Log messages written to /home/oracle/product/10.1.0/db_1/network/log/listener.log
Listening on: (DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=nren-msfc-rtr.nren.nasa.gov)(PORT=1521)))
Error listening on: (DESCRIPTION=(ADDRESS=(PROTOCOL=TCPS)(HOST=nren-msfc-rtr.nren.nasa.gov)(PORT=2484)))
TNS-12557: TNS:protocol adapter not loadable
TNS-12560: TNS:protocol adapter error
  TNS-00527: Protocol Adapter not loadable


Listener failed to start. See the error message(s) above...