Failed to connect to ASM instance. The connection is closed: The connection is closed

One client OEM reports the following incidents intermittently from OEM 13c.

Host=racnode1.virtuallab
Target type=Automatic Storage Management
Target name=+ASM1_racnode1.virtuallab
Categories=Availability
Message=Failed to connect to ASM instance. The connection is closed: The connection is closed
Severity=Fatal
Event reported time=20/12/2020 09:19:01AM EST
Target Lifecycle Status=Test
Operating System=LINUX
Platform=X86_64
Associated Incident Id=12345
Associated Incident Status=New
Associated Incident Owner=oracle
Associated Incident Acknowledged By Owner=No
Associated Incident Priority=High
Associated Incident Escalation Level=0
Event Type=Target Availability
Event name=Status
Availability status=Down

Let’s do some investigations, and provide the easy workaround if patches are unavailable to some clients.

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How to Check Process Memory Usage in Linux

This post demonstrates how to check a process memory usage in Linux. While there are system resource issues, it is always helpful to identify the root cause by checking suspected process memory usage, which can be memory leaking from time to time.

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