Use the diagcollection.pl script to collect diagnostic information from an Oracle Clusterware installation. The diagnostics provide additional information so that Oracle Support can resolve problems. This script is located in $ORA_CRS_HOME/bin. Before executing the script, you must be logged in as the root user, and you must set the following environment variables: ORACLE_BASE, ORACLE_HOME, ORA_CRS_HOME, HOSTNAME.

When invoked with the –collect option, the script generates, in the local directory, the four files. Mainly, basData.tar.gz contains log files from the $ORACLE/BASE/admin directory. The crsData.tar.gz file contains log files from the $ORA_CRS_HOME/log/<hostname> directory. The ocrData.tar.gz files contains the results of an ocrdump, ocrcheck, and the list of ocr backups. The oraData.tar.gz file contains log files from the $ORACLE_HOME/log/<hostname> directory. If you invoke the script with the -collect option, and you already have the four files generated from a previous run in the local directory, the script asks you if you want to overwrite the existing files.

You can also invoke the script with the –clean option to clean out the files generated from a previous run in your local directory. Alternatively, you can invoke the script to just capture a subset of the log files. You can do so by adding extra options after the –collect option: -crs for collecting Oracle Clusterware logs, -oh for collecting ORACLE_HOME logs, -ob for collecting ORACLE_BASE logs, or –all for collecting all logs. The –all option is the default. The –coreanalyze option allows you to extract to text files only core files found in the generated files.

Example: