A lock is a mechanism that prevents destructive interactions. Interactions are destructive when they incorrectly update data or incorrectly alter underlying data structures, between transactions accessing shared data. Locks play…

Problem:While patching 19.3 GRID_HOME with July2019 RU patch 19.4 I got this error: [root@localhost bin]# export PATCH_LOCATION=/u01/oracle/RU_PATCHES/29708769 [root@localhost bin]# $GRID_HOME/OPatch/opatchauto apply $PATCH_LOCATION -oh $GRID_HOME OPatchauto session is initiated at Mon…

Instance recovery is the process of applying records in the online redo log to data files to reconstruct changes made after the most recent checkpoint. Instance recovery occurs automatically when…