ORA-09851
        soacon: Archmon unable to lock named pipe.
        
        
        Cause
        fcntl() failed to set read lock on named pipe ?/dbs/mon2arch_@.
        Action
        Make sure that archmon is not already active on another terminal for this ORACLE_SID.  Only one archmon session is allowed at a time for a given instance.
        
     
    
    
        ORA-09851
        soacon: Archmon unable to lock named pipe.
        
        
        Cause
        fcntl() failed to set read lock on named pipe ?/dbs/mon2arch_@.
        Action
        Make sure that archmon is not already active on another terminal for this ORACLE_SID.  Only one archmon session is allowed at a time for a given instance.
        
     
    
    
        ORA-09851
        soacon: Archmon unable to lock named pipe.
        
        
        Cause
        fcntl() failed to set read lock on named pipe ?/dbs/mon2arch_@.
        Action
        Make sure that archmon is not already active on another terminal for this ORACLE_SID.  Only one archmon session is allowed at a time for a given instance.