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Are the Oracle Clusterware bundle patches cumulative, do they conflict with one another?

April 26, 2017clusterware conflict cumulative Oracle patches

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Are the Oracle Clusterware bundle patches cumulative, do they conflict with one another?

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Fix-wise, the Oracle Clusterware bundles are cumulative, that is, CRS bundle #3 fixes all the issues that bundle #2 did, and some additional ones, see Note:405820.1 for complete list of bugs fixed in each bundle. However, OPatch does not allow to apply ANY patch if there are any overlapping libs or binaries between an already existing patch and the to-be-installed patch. If two patches touch a particular file, e.g: kcb.o, then the existing patch must be manually removed before the new applied. So, bundle patches are cumulative, however they do conflict with one another due to the way OPatch allows patch application, hence previous bundle must be manually removed before a new one is applied.