ORAAGENT or ORAROOTAGENT High Resource (CPU, Memory etc) Usage (Doc ID 1062676.1)

Last updated on OCTOBER 01, 2016

Applies to:

Oracle Database - Enterprise Edition - Version 11.2.0.1 and later
Information in this document applies to any platform.

Symptoms

11gR2 Grid Infrastructure oraagent.bin or orarootagent.bin process uses high CPU, memory and threads. If the cluster node is up and running for very long time, it could exhaust memory and swap space which could result in node eviction or other stability issue.

With OS "top" or other memory monitoring tool, we can see huge virtual memory is allocated and increasing over time:

PID USER      PR  NI  VIRT  RES  SHR S %CPU %MEM    TIME+  COMMAND                                                     
7242 oracle    18   0  308g 953m  14m S 83.2  0.7 166:28.72 oraagent.bin 

In above example, 308GB of virtual memory is allocated to the agent process while it's consuming 83.2% of CPU.

Cause

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