If the server refuses to start, remove the guardian file and all shared memory files while the server is offline and then retry a new start.
# install-path/instance-name/db/guardian # install-path/instance-name/db/_db.00* |
If the start succeeds and the database still cannot be loaded, continue with this procedure.
Backup up all database file stored in the db/ directory.
Collect error and access log files from the time during which the database was inaccessible.
# install-path/instance-name/logs/errors* # install-path/instance-name/access* |