Listener Fails To Start With IPC Permission Errors (TNS-12546 TNS-12555 TNS-00516 TNS-00525)
(Doc ID 434062.1)
Last updated on JUNE 08, 2023
Applies to:
Oracle Net Services - Version 10.2.0.2 to 19.4.0.0.0 [Release 10.2 to 18.1]Information in this document applies to any platform.
Symptoms
Attempting to start a listener on Unix is failing with permission errors:
There are multiple Oracle installations on this server and with listeners running under different accounts OR we are/have been running the same listener under different OS user(s).
Changes
One or more of the following items:
- Some IPC keys have been reused from older listener(s)
- Same listener has previously been started under different OS users
- Listeners running under different OS users are using the same IPC keys
- Permissions in /var/tmp or /tmp have been changed recently.
Cause
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In this Document
| Symptoms |
| Changes |
| Cause |
| Solution |
| References |