Creating an index helps Oracle optimize query plans by using the indexed fields in the search criteria, thus avoiding a full table scan.
Write efficient SQL statements: Avoid using wildcard queries and try to use specific conditions to restrict the data range, reducing the possibility of full table scans.
Using partitioning: dividing the table according to a specific field can reduce the cost of full table scans by only scanning specific partitions during queries.
Using HINT hints in SQL statements can guide the optimizer to choose a more appropriate execution plan, avoiding full table scans.
Regularly gathering statistical information: By collecting statistics from tables regularly, it can help the optimizer more accurately estimate the cost of queries, select a more appropriate execution plan, and avoid full table scans.
