Use Oracle Trace File Analyzer to analyze all of your logs across your cluster to identify recent errors.

1. To find all errors in the last one day:

   $ tfactl analyze –last 1d

2. To find all errors over a specified duration:

   $ tfactl analyze –last 18h

3. To find all occurrences of a specific error on any node, for example, to report ORA-00600 errors:

   $ tfactl analyze -search “ora-00600" -last 8h