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3. Getting Java heap issue or CMM crashes , if the files with instances (around

  1. Getting Java heap issue or CMM crashes , if the files with instances (around ssue: Getting Java heap issue or CMM crashes , if the files with instances (around 2000 items) are selected for the migration. ( Both in batch mode & UI mode)

Creo Version : 4.0

NX Version : 1953 /1961

CMM Version : CMM 1953.6

Steps:

Batch Mode:

Migrate the attached part files list in batch Mode with their instances

Unable to migrate due to java heap issue

UI mode:

Select the option " Folder to migrate"

Try using " Migrate Top level Instances " ON & OFF

CMM crashes and unable to migrate

Attached the part files The problem you reported where CMM produces java heap out of memory errors or CMM crashes when migrating 2793 items can be fixed by increasing the JVM memory available by replacing "-Xmx4096m" with "-Xmx8192m" in \cmmSolo.cmd.

PR 10127225 Product Information: Product: NX , Application: CMM , Version: V1953

Source: https://support.sw.siemens.com/en-US/knowledge-base/PL8564221 · retrieved 2026-10-02