Werk #13734: mk_oracle: Do not empty cache if the plugin is triggered from multiple sites

Component	Checks & agents
Title	mk_oracle: Do not empty cache if the plugin is triggered from multiple sites
Date	Sep 5, 2022
Level	Trivial Change
Class	Bug Fix
Compatibility	Compatible - no manual interaction needed
Checkmk versions & editions	2.2.0b1 Checkmk Community, Checkmk Pro, Checkmk Ultimate, Checkmk Ultimate MT 2.1.0p12 Checkmk Community, Checkmk Pro, Checkmk Ultimate MT

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