A user receives the following error while executing a query: ORA/x7f01555:snapshot too old Which two options can be the solutions to avoid such errors in future?()
Which of the following roles provides the privileges to maintain and query the recovery catalog schema?()
Examine the output of the query that you executed to list the objects in the recycle bin: You verified that no table named SALES_TAB exists in the schema. Then you executed the following command to purge the objects in the recycle bin: SQL> PURGE TABLE sales_tab; What would be the outcome of this command?()
ou need to create a data block for query operations in the RETIRED_EMPLOYEES form module. Which three data sources can you use for this block?()
You have an SQL query that takes one minute to execute. You use the following code segment to execute the SQL query asynchronously.Dim ar As IAsyncResult = cmd.BeginExecuteReader( )You need to execute a method named DoWork( ) that takes one second to run while the SQL query is executing. DoWork( ) must run as many times as possible while the SQL query is executing. Which code segment should you use?()
Which statements are true regarding the Query Result Cache? ()
what device sends IGMP Query messages?
Which object may be used during query optimization to improve the performance for a subset of SELECT queries?()
You query the ORDERS table and discover that order number 1101 is missing. One of your reports, generated at 5:00 A.M. on April 23, 2005 using Oracle Reports, includes this order number in the output. You have inserted 100 new orders into the ORDERS table since generating this report. Which flashback technology would you use to recover order number 1101 into the ORDERS table without losing the 100 orders that you added after the report was generated?()
The EMPLOYEES table contains these columns: You need to write a query that will produce these results: 1. Display the salary multiplied by the commission_pct. 2. Exclude employees with a zero commission_pct. 3. Display a zero for employees with a null commission value. Evaluate the SQL statement: What does the statement provide?()