Oracle DB application slowness after kernel update
Issue
- After updating to kernel-4.18.0-553.69.1.el8_10 or kernel-5.14.0-570.34.1.el9_6 or later Oracle became slow
- Recurring Oracle DB Latency Leading to Application Access Delays Every 30 Minutes (2–3 Minute Timeouts)
- DB active connections counts are going high and impacting application and this issue is lasting for around 15 to 20 mins and post that issue resolves on its own.
- Sometimes but not always accompanied by warnings related to loading the ipv6 module:
request_module: kmod_concurrent_max (0) close to 0 (max_modprobes: 50), for module net-pf-10, throttling
Environment
- Red Hat Enterprise Linux
kernel-4.18.0-553.69.1.el8_10and later.kernel-5.14.0-570.34.1.el9_6and later.
- Oracle Database
- Oracle 3rd party modules
oracleacfs 5763072 0
oracleadvm 909312 0
oracleoks 831488 2 oracleadvm,oracleacfs
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