This error message occurs because of Oracle tries to execute an SQL statement that references a table or view that either does not exist, or because of a synonym that is not allowed here was used, or because of you do not have access rights to the particular object. Other possible cause is that the table or view belongs to another schema and you didn’t reference the table by the schema name, or a view was referenced where a table is required.

For more information: http://www.mydigitallife.info/ora-00942-table-or-view-does-not-exist-oracle-error/