5. The method of claim 1 , wherein the first computer system is part of a production system including a production database, wherein the second computer system is part of a backup system including a backup database, and wherein the backup database contains a backup copy of data contained within the production database.
9. The method of claim 5 , further comprising: switching, subsequent to the storing, from the production system to the backup system; receiving, subsequent to the switching and by the second DBMS, the first request to execute the query; and obtaining, in response to the receiving the first request to execute the query, a second result set for the query by implementing, by the second DBMS, the second query access plan.