Forum Discussion

Asura2003's avatar
Asura2003
Icon for Altostratus rankAltostratus
Jul 15, 2025

F5 ASM XML processing - policy name.

Hello, we have an error message in logs: ASM out of memory error: event code X89 Exceeded maximum memory assigned for XML processing we have already increased both variables   total_xml_memory and...
asm
waf
xml
XML MEMORY
Asura2003's avatar
Asura2003
Icon for Altostratus rankAltostratus
Jul 15, 2025

Version 16.1.4 and around 60 policies. We are going to upgrade to 17.5.1 in a few weeks.

  • VGF5's avatar
    VGF5
    Icon for Cumulonimbus rankCumulonimbus
    Jul 15, 2025

    Thanks for the update. Upgrade is always the best option. Since you're using 60 policies, you're well below the known threshold (255+) where policy count alone could lead to XML memory exhaustion (K16221342).

    If your system has enough available RAM, consider increasing the additional_xml_memory_in_mb value, up to 64 GB if needed. Just be sure to monitor overall memory usage to avoid impacting other system processes. Refer K10803.

    Also, take a look at your XML profiles and schemas, simplify wherever possible and get rid of any that aren’t being used.

    If these doesn't work, I would recommend to contact the F5 Support.