单选题 QUESTION 89 Choose one Examine the parameters for a database instance: NAME TYPE VALUE Temp_undo_enabled boolean TRUE undo_ management string AUTO undo _retention Integer 900 undo _tablespace string UNDOTBS1 Your database has three undo tablespaces and the default Undo tablespace is not autoextensible. Resumable space allocation is not enabled for any sessions in the database instance. What is the effect on new transactions when all undo space in the default undo tablespace is in use by active transactions?
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单选题 QUESTION 44 Your database instance is started with a PFILE. Examine these parameters: You want to increase the size of the buffer cache. Free memory is available to increase the size of the buffer cache. You execute the command: SQL> ALTER SYSTEM SET DB_CACHE_SIZE= 10 24 M; What is the Outcome?
单选题 QUESTION 28 Examine the description of the PRODUCTS table: Which query is valid?
单选题 QUESTION 40 The EMPLOYEES table contains columns EMP_ID of data type NUMBER and HIRE_DATE of data type DATE. You want to display the date of the first Monday after the completion of six months since hiring. The NLS_TERRITORY parameter is set to AMERICA in the session and , therefore, Sunday is the first day on the wee. Which query can be used?
单选题 QUESTION 18 Which is the default column or columns for sorting output from compound queries using SET operators such as INTERSECT in a SQL statement?
单选题 QUESTION 9 What is true about non-equijoin statement performance?
单选题 QUESTION 47 Your database instance is started by using a server parameter file (SPFILE) . You execute the following command to change the value of the LOG_BUFFER initialization parameter: ALTER SYSTEM SET LOG_ BUFFER= 32M; What is the outcome of this command?
单选题 QUESTION 1 1 NLS_DATE FORMAT is set to DD-MON-YY. Which query requires explicit data type conversion?
单选题 QUESTION 43 Examine the description of the SALES1 table: SALES2 is a table with the same description as SALES1 . Some sales data is duplicated in both tables. You want to display the rows from the SALES1 table which are not present in the SALES2 table. Which set operator generates the required output?