ORA-09842

Error: ORA-09842: soacon: Archmon unable to create named pipe.

Causa: MKNOD() failed to create named pipe ?/dbs/mon2arch_@.

Acción: Your current operating system login may lack write permission for the ORACLE_HOME/dbs directory. Only USERIDs in the DBA group of a given instance can run ARCHMON for that ORACLE_SID. Make sure that the ORACLE_HOME directory is correct in ORATAB.