Informix Error -9478: VM too low on memory: (%s) bytes left.

Cause and resolution

VM too low on memory: (%s) bytes left.

There is insufficient memory to start a new instance of a Java UDR. Reduce the number of session connected to the Java virtual processor (VP) or terminate the resource-intensive Java computations.

Oninit® Troubleshooting Guidance

Reasons / Common Causes

-9478 fires when there's insufficient memory to start a new instance of a Java UDR — per the official guidance.

Too many sessions connected to the JVP, per the official guidance — the first named cause.
Resource-intensive Java computations consuming the VM's memory, per the official guidance — the second named cause.

Solutions / Resolution

Reduce the number of sessions connected to the JVP, per the official guidance.
Terminate the resource-intensive Java computations, per the official guidance.

Examples

Checking JVP session count

$ onstat -g ses | grep -i java

Diagnostic Checks

Check the number of sessions connected to the JVP and any long-running/heavy Java UDRs, and reduce load accordingly.

Related Errors / Related Topics

-9425 — "Internal error with the Java memory pool." A related Java-memory error, on pool corruption rather than outright exhaustion.

The JVP was too low on memory to start a new Java UDR instance — reduce connected sessions or terminate heavy Java computations.