Werk #5083: oracle_locks: Do not discover if data is incomplete

Component	Checks & agents
Title	oracle_locks: Do not discover if data is incomplete
Date	Aug 4, 2017
Level	Trivial Change
Class	Bug Fix
Compatibility	Compatible - no manual interaction needed
Checkmk versions & editions	1.5.0i1 Checkmk Community, Checkmk Pro, Checkmk Ultimate MT 1.4.0p10 Checkmk Community, Checkmk Pro, Checkmk Ultimate MT 1.2.8p26 Checkmk Community, Checkmk Pro, Checkmk Ultimate MT

One error line may look like Couldnt find /PATH/TO/sqlnet.ora which was inventorize as an item and causes an IndexError during check period.

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