Users Guide

Linux Issues | Troubleshooting
OMNM 6.5.3 User Guide 727
Linux Issues
The following are issues with Linux installations:
•Install in
/opt/dorado , unzip package in, for example, /opt/installs , not /opt/
dorado
.
• Linux (executed as the root user) uses this command:
/etc/init.d/owaredb start
You should see the following response in the shell where you execute this command:
Starting MySQL[ OK ]
• If you experience problems with discovery, and see errors on startup similar to the following:
[com.dorado.core.mediation.snmp.SRSnmpEventReportDispatcher] (Thread-36
RecvTrap Exception :
com.dorado.core.mediation.snmp.SRSnmpException:
at com.dorado.core.mediation.snmp.SRSnmpSession.nRecvTrap(Native Method)
at
com.dorado.core.mediation.snmp.SRSnmpSession.recvTrap(SRSnmpSession.jav
a:733)
at
com.dorado.core.mediation.snmp.SRSnmpEventReportDispatcher.run(SRSnmpEv
entReportDispatcher.java:96)
at java.lang.Thread.run(Thread.java:662)
or
ERROR [com.dorado.core.mediation.syslog.OWSysLogListener]
(OWSysLog.Listener Received a null SysLog message. SysLog port may be in
use. Shutting down SysLog listener.
You may be able to solve this issue by increasing the available memory on the entire system or
lowering the heap memory used by your system. The former option is best practice.
Application Server Memory (Linux and Windows)
I. Linux application server appears to have low memory.
Solution: Memory statistics using TOP can be deceiving. Linux may have borrowed some free
memory for disk caching. To determine if this is the case:
1 Open a shell and execute command: free -m
This returns the amount of (true) free/available memory for application use in megabytes. See
cache value in line
-/+ buffers/cache: 26441 37973 below…
[redcell@AppRedcell01 ~]$ free -m
total used free shared buffers cached
Mem: 64414 63823 590 0 364 37018
-/+ buffers/cache: 26441 37973
Swap: 65535 11 65524
[redcell@AppRedcell01 ~]$
Here, 37,973M is still free for application use.
See
www.linuxatemyram.com/ for more detail on this topic.
Alternatively,