When attempting to configure a watch Rule Expression Invalid message appears on screen (Doc ID 1610122.1)

Last updated on JUNE 10, 2022

Applies to:

Symptoms

Whenever a watch rule is created on WLDF, if the threshold value overpasses 2GB transformed to bytes (2147483648), the following error appears on both console and log file:

On Screen you will see:

On Log:

To replicate it, log into Weblogic Server Admin console and go to:

• Diagnostics Modules > Created Module > Configuration > Watches and Notifications > Watches

In this case it'll be replicated by creating a watch rule for heap current size. Say that I want to monitor whenever the heap goes above 2 GB > 2048 MB > 2147483648 bytes

• On watches, click on "New"

Name: MyWatch
Watch Type: Collected Metrics

• Click on Next
• On current Watch Rule Click on Edit
• Then Enter the following expression:

(${ServerRuntime//[weblogic.management.runtime.JVMRuntimeMBean]com.bea:Name=AdminServer,ServerRuntime=AdminServer,Type=JVMRuntime//HeapFreeCurrent} < 2147483648)

Cause

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