Bug ID 1696641: aced core running out of file descriptors

Last Modified: Jan 26, 2026

Affected Product(s):
BIG-IP APM(all modules)

Known Affected Versions:
17.1.1.1, 17.1.1.2, 17.1.1.3, 17.1.1.4, 17.1.2, 17.1.2.1, 17.1.2.2, 17.1.3

Opened: Oct 15, 2024

Severity: 4-Minor

Symptoms

-- The aced process may exhaust available file descriptors over time when using SecurID authentication -- Users are unable to authenticate using RSA SecurID -- Complete APM service outage with "Too many open files" errors in /var/log/apm -- aced process may core and restart

Impact

-- Complete APM service outage. -- All VPN clients unable to establish connections -- SecurID authentication failures. -- Service becomes unstable and stops processing authentication requests.

Conditions

-- BIG-IP APM system configured with SecurID authentication -- aced process runs for extended periods (typically weeks) -- Authentication failures or connection issues between APM and SecurID server may accelerate the issue.

Workaround

Restart the aced process: bigstart restart aced. Perform system failover to restore service temporarily.

Fix Information

None

Behavior Change

Guides & references

K10134038: F5 Bug Tracker Filter Names and Tips