Upgrade and Patching oracle

Upgrade:  

Path -----------------------------------------------------------------	Description ----------------------------------------------------
$ORACLE_BASE/cfgtoollogs/dbua/<SID>/	Main directory for DBUA logs per DB SID
$ORACLE_BASE/cfgtoollogs/dbua/<SID>/upgrade*.log	Main upgrade logs
$ORACLE_BASE/cfgtoollogs/dbua/<SID>/trace.log	Detailed trace of DBUA steps
$ORACLE_BASE/cfgtoollogs/dbua/<SID>/postupgrade/*.log	Logs of post-upgrade steps (script output)
$ORACLE_HOME/cfgtoollogs/dbua/	May also contain general DBUA logs (older versions)

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OPatch: 

Tool -------------	Log Location --------------------------------------------------------------------------------------------	Description ------------------------------------------
OPatch	$ORACLE_HOME/cfgtoollogs/opatch/	Main directory for opatch logs.
	$ORACLE_HOME/cfgtoollogs/opatch/opatch<timestamp>.log	Log file for each opatch execution.
OPatchAuto	$ORACLE_HOME/cfgtoollogs/opatchauto/	Root directory for all opatchauto sessions.
	$ORACLE_HOME/cfgtoollogs/opatchauto/<timestamp>/	Subfolder for a specific opatchauto run.
	$ORACLE_HOME/cfgtoollogs/opatchauto/<timestamp>/opatchauto<timestamp>.log	Main log for the auto-patching operation.
	Other files in the same folder	Logs for root.sh, database patching, rollback, etc.

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