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Werk #13710: oracle_instance: Handle unresponsive databases and login failures correctly

Component Checks & agents
Title oracle_instance: Handle unresponsive databases and login failures correctly
Date Jan 28, 2022
Level Trivial Change
Class Bug Fix
Compatibility Compatible - no manual interaction needed
Checkmk versions & editions
2.1.0b1 Checkmk Community, Checkmk Pro, Checkmk Ultimate MT
2.0.0p20 Checkmk Community, Checkmk Pro, Checkmk Ultimate MT

In case of unresponsive databases or login failures, the check plugin oracle_instance went UNKNOWN and reported "Item not found in monitoring data".

Instead, the plugin now goes CRIT and reports "Database or necessary processes not running or login failed". This also covers the case where a process which is needed to monitor the databases is not running (e.g. ora_pmon).

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