According to the following link, "The aupair.exe process is a database layer between ccm.exe and SQL." There was a bug that could cause a CPU/memory problem related to this process. See the second link below.
we have the same issue , and it seems to be coming at the same time everyday just pass 12:am .also , database query tells the phones are disconnceted but this is not the case(from RTMT).also , the server in question in the same cucm group(example a-e** the cpu Issue),but we could see from RTMT lots of Fialed Registration Attempts on the a server(a)server.
how come the CPU spike to 100% but no phones registration /deregistration issue.
CPUPegging/CallProcessNodeCPUPegging alerts monitor CPU usage based on configured thresholds:
Note: %CPU is calculated as %system + %user + %nice + %iowait + %softirq + %irq
Alert messages include these:
%system, %user, %nice, %iowait, %softirq, and %irq
The process that uses the most CPU
The processes that wait on Uninterruptible disk sleep
CPU Pegging alerts can come up in RTMT due to higher CPU usage than what is defined as the watermark level. Since CDR is a CPU intensive application when it loads, check if you receive the alerts in the same period as when the CDR is configured to run reports. In this case, you can need to increase the threshold values on RTMT. Refer to Alerts for more information about RTMT alerts.
SIP traces provide key information in troubleshooting SIP Trunks, SIP
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Please find the attached HTML document, download and open it on your PC.
This provides an easy to use form where you simply answer a few
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CUCM Database Replication is an area in which Cisco customers and
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