What is the result of executing a TRUNCATE TABLE command on a table that has Flashback Archivingenabled?（）A、It fails with the ORA-665610 Invalid DDL statement on history-tracked messageB、The rows in the table are truncated without being archived.C、The rows in the table are archived, and then truncated.D、The rows in both the table and the archive are truncated.
What is the result of executing a TRUNCATE TABLE command on a table that has Flashback Archivingenabled?（）
- A、It fails with the ORA-665610 Invalid DDL statement on history-tracked message
- B、The rows in the table are truncated without being archived.
- C、The rows in the table are archived, and then truncated.
- D、The rows in both the table and the archive are truncated.
相关考题：
Before a Flashback Table operation, you execute the following command:ALTER TABLE employees ENABLE ROW MOVEMENT;Why would you need this to be executed?() A. Because row IDs may change during the flashback operationB. Because the object number changes after the flashback operationC. Because the rows are retrieved from the recycle bin during the flashback operationD. Because the table is moved forward and back to a temporary during the flashback opertion
You enabled Flashback Data Archive on the INVENTORY table.Which DDL operation is supported on the table after enabling Flashback Data Archive?() A. Drop the table.B. Partition the tableC. Truncate the table.D. Add a column to the table.E. Rename a column in the table.
Evaluate the SQL statement: TRUNCATE TABLE DEPT; Which three are true about the SQL statement? () A. It releases the storage space used by the table.B. It does not release the storage space used by the table.C. You can roll back the deletion of rows after the statement executes.D. You can NOT roll back the deletion of rows after the statement executes.E. An attempt to use DESCRIBE on the DEPT table after the TRUNCATE statement executes will display an error.F. You must be the owner of the table or have DELETE ANY TABLE system privileges to truncate the DEPT table
What is the result of executing a TRUNCATE TABLE command on a table that has Flashback Archivingenabled?() A. It fails with the ORA-665610 Invalid DDL statement on history-tracked messageB. The rows in the table are truncated without being archived.C. The rows in the table are archived, and then truncated.D. The rows in both the table and the archive are truncated.
Examine the data in the EMPLOYEES and DEPARTMENTS tables:Also examine the SQL statements that create the EMPLOYEES and DEPARTMENTS tables:On the EMPLOYEES table, EMPLOYEE_ID is the primary key.MGR_ID is the ID of managers and refers to the EMPLOYEE_ID.DEPT_ID is foreign key to DEPARTMENT_ID column of the DEPARTMENTS table.On the DEPARTMENTS table, DEPARTMENT_ID is the primary key.Examine this DELETE statement:What happens when you execute the DELETE statement?（）A. Only the row with department ID 40 is deleted in the DEPARTMENTS table.B. The statement fails because there are child records in the EMPLOYEES table with department ID 40.C. The row with department ID 40 is deleted in the DEPARTMENTS table. Also the rows with employee IDs 110 and 106 are deleted from the EMPLOYEES table.D. The row with department ID 40 is deleted in the DEPARTMENTS table. Also the rows with employee IDs 106 and 110 and the employees working under employee 110 are deleted from the EMPLOYEES table.E. The row with department ID 40 is deleted in the DEPARTMENTS table. Also all the rows in the EMPLOYEES table are deleted.F. The statement fails because there are no columns specifies in the DELETE clause of the DELETE statement.
You enabled Flashback Data Archive on the INVENTORY table.Which DDL operation is supported on the table after enabling Flashback Data Archive?（）A、Drop the table.B、Partition the tableC、Truncate the table.D、Add a column to the table.E、Rename a column in the table.
You executed the following FLASHBACK TABLE command： FLASHBACK TABLE emp TO TIMESTAMP （’11：45’，’hh12：mi’）; Which two statements are correct？（）A、The FLASHBACK TABLE statement will not be written to the alert log file.B、The changes made to the EMP table since the specified time will be undone.C、The EMP table that was dropped by mistake from the database will be restored.D、The FLASHBACK TABLE statement will be executed within a single transaction.E、The FLASHBACK TABLE statement will not maintain the existing indexes on the EMP table. F、The list of transactions that have modified the EMP table since the specified time will be displayed.
You enabled Flashback Data Archive on the INVENTORY table. Which DDL operation is supported on the table after enabling Flashback Data Archive？（） A、 Drop the table.B、 Partition the table.C、 Truncate the table.D、 Add a column to the table.E、 Rename a column in the table.
Before a Flashback Table operation, you execute the following command: ALTER TABLE employees ENABLE ROW MOVEMENT; Why would you need this to be executed?（）A、Because row IDs may change during the flashback operationB、Because the object number changes after the flashback operationC、Because the rows are retrieved from the recycle bin during the flashback operationD、Because the table is moved forward and back to a temporary during the flashback opertion
You are working in an online transaction processing (OLTP) environment. You use the FLASHBACKTABLE command to flash back the CUSTOMERS table. Before executing the FLASHBACK TABLE command, the system change number (SCN) was 663571. After flashing back the CUSTOMERS table, you realize that the table is not in the correct state. Now, you need to reverse the effects of the FLASHBACK TABLE command. Which is the fastest and the most efficient option to reverse the effects of the FLASHBACK TABLE command?（）A、Restore the backup control file and open the database with RESETLOGS option.B、Perform point-in-time recovery because flashback cannot be performed again on this tableC、Execute the FLASHBACK DATABASE statement to retrieve the CUSTOMERS table as it was at SCN 663571D、Execute another FLASHBACK TABLE statement to retrieve the CUSTOMERS table as it was at SCN 663571
Evaluate the SQL statement:TRUNCATE TABLE DEPT;Which three are true about the SQL statement? （）A、It releases the storage space used by the table.B、It does not release the storage space used by the table.C、You can roll back the deletion of rows after the statement executes.D、You can NOT roll back the deletion of rows after the statement executes.E、An attempt to use DESCRIBE on the DEPT table after the TRUNCATE statement executes will display an error.F、You must be the owner of the table or have DELETE ANY TABLE system privileges to truncate the DEPT table
What does the TRUNCATE statement do?（）A、Removes the tableB、Removes all rows from a tableC、Shortens the table to 10 rowsD、Removes all columns from a tableE、Removes foreign keys from a table
User Scott has updated the salary of one of the employees in the EMPLOYEES table and has not committed the transaction. What are the two types of locks that this scenario would lead to？（）A、null lock on the row being updatedB、null lock on the table containing the rowC、ROW SHARE lock for the row being updatedD、ROW EXCLUSIVE lock for the row being updatedE、shared row-exclusive lock for the row being updatedF、a shareable table lock for the table containing the rowG、exclusive table-level lock for the table containing the row
Which three descriptions are correct about the effects of the TRUNCATE command on a table（）A、The corresponding indexes for the table are also truncated.B、Delete triggers on the table are fired during the execution of the TRUNCATE command.C、The child table is truncated when the TRUNCATE command is applied on the parent table.D、The high-water mark （HWM） is set to point to the first usable data block in the table segment.E、No undo or very little undo data is generated during the execution of the TRUNCATE command
You are working in an online transaction processing （OLTP） environment. You used the FLASHBACK TABLE command to flash back the CUSTOMERS table. Before executing the FLASHBACK TABLE command， the System Change Number （SCN） was 663571. After flashing back the CUSTOMERS table， you realize that the table is not in the correct state and the resultant changes are not what you had desired. So， you need to reverse the effects of the FLASHBACK TABLE command while ensuring that： a） No other user data in the database is affected. b） The operation takes the minimum possible time. Which option would you choose？（）A、use the ROLLBACK command with SCN 663571B、perform Flashback Transaction Query with SCN 663571C、execute the FLASHBACK DATABASE statement to retrieve the CUSTOMERS table as it was at SCN 663571D、execute another FLASHBACK TABLE statement to retrieve the CUSTOMERS table as it was at SCN 663571
User A executes the following command to drop a large table in your database：SQL DROP TABLE trans； While the drop table operation is in progress， user B executes the following command on the same table：SQL DELETE FROM trans WHERE tr_type=’SL’； Which statement is true regarding the DELETE command（）A、It fails to delete the records because the records are locked in SHARE mode.B、It deletes the rows successfully because the table is locked in SHARE modeC、It fails to delete the records because the table is locked in EXCLUSIVE mode.D、It deletes the rows successfully because the table is locked in SHARE ROW EXCLUSIVE mode.
You are performing flashback of the ORDERS table in the Scott’s schema because some important data is deleted in the table by mistake. The SCN number was 771513 at the time of deletion. You issued the following statement to perform Flashback Table： SQL FLASHBACK TABLE ORDERS TO SCN 771513； What is the prerequisite to perform Flashback Table？（）A、 You must configure OMF in your database.B、 You must enable block change tracking feature in your database.C、 You must enable ROW MOVEMENT feature on the ORDERS table.D、 You must use the Flashback Version Query before using the Flashback Table feature.
多选题You executed the following FLASHBACK TABLE command： FLASHBACK TABLE emp TO TIMESTAMP （’11：45’，’hh12：mi’）； Which two statements are correct？ （）AThe FLASHBACK TABLE statement will not be written to the alert log file.BThe EMP table that was dropped by mistake from the database will be restored.CThe changes made to the EMP table since the specified time will be undone.DThe FLASHBACK TABLE statement will not maintain the existing indexes on the EMP table.EThe FLASHBACK TABLE statement will be executed within a single transaction.FThe list of transactions that have modified the EMP table since the specified time will be displayed.
多选题User Scott has updated the salary of one of the employees in the EMPLOYEES table and has not committed the transaction. What are the two types of locks that this scenario would lead to？（）Anull lock on the row being updatedBnull lock on the table containing the rowCROW SHARE lock for the row being updatedDROW EXCLUSIVE lock for the row being updatedEshared row-exclusive lock for the row being updatedFa shareable table lock for the table containing the rowGexclusive table-level lock for the table containing the row
多选题A constraint in a table is defined with the INITIALLY IMMEDIATE clause. You executed the ALTER TABLE command with the ENABLE VALIDATE option to enable the constraint that was disabled. What are the two effects of this command？（）AIt fails if any existing row violates the constraint.BIt does not validate the existing data in the table.CIt enables the constraint to be enforced at the end of each transaction.DIt prevents insert， update， and delete operations on the table while the constraint is in the process of being enabled.
单选题What is the result of executing a TRUNCATE TABLE command on a table that has Flashback Archivingenabled?（）AIt fails with the ORA-665610 Invalid DDL statement on history-tracked messageBThe rows in the table are truncated without being archived.CThe rows in the table are archived, and then truncated.DThe rows in both the table and the archive are truncated.
单选题You enabled Flashback Data Archive on the INVENTORY table. Which DDL operation is supported on the table after enabling Flashback Data Archive？（）A Drop the table.B Partition the table.C Truncate the table.D Add a column to the table.E Rename a column in the table.
单选题You are working in an online transaction processing （OLTP） environment. You used the FLASHBACK TABLE command to flash back the CUSTOMERS table. Before executing the FLASHBACK TABLE command， the System Change Number （SCN） was 663571. After flashing back the CUSTOMERS table， you realize that the table is not in the correct state and the resultant changes are not what you had desired. So， you need to reverse the effects of the FLASHBACK TABLE command while ensuring that： a） No other user data in the database is affected. b） The operation takes the minimum possible time. Which option would you choose？（）A Use ROLLBACK command with SCN 663571.B Perform Flashback Transaction Query with SCN 663571.C Execute the FLASHBACK DATABASE statement to retrieve the CUSTOMERS table as it was at SCN 663571.D Execute another FLASHBACK TABLE statement to retrieve the CUSTOMERS table as it was at SCN 663571.
多选题Which three descriptions are correct about the effects of the TRUNCATE command on a table（）AThe corresponding indexes for the table are also truncated.BDelete triggers on the table are fired during the execution of the TRUNCATE command.CThe child table is truncated when the TRUNCATE command is applied on the parent table.DThe high-water mark （HWM） is set to point to the first usable data block in the table segment.ENo undo or very little undo data is generated during the execution of the TRUNCATE command
单选题What does the TRUNCATE statement do?（）ARemoves the tableBRemoves all rows from a tableCShortens the table to 10 rowsDRemoves all columns from a tableERemoves foreign keys from a table
单选题Before a Flashback Table operation，you execute the following command： ALTER TABLE employees ENABLE ROW MOVEMENT； Why would you need this to be executed？（）A Because row IDs may change during the flashback operationB Because the object number changes after the flashback operationC Because the rows are retrieved from the recycle bin during the flashback operationD Because the table is moved forward and back to a temporary during the flashback opertion
单选题User A executes the following command to drop a large table in your database： SQL DROP TABLE trans； While the drop table operation is in progress， user B executes the following command on the same table： SQL DELETE FROM trans WHERE tr_type=’SL’； Which statement is true regarding the DELETE command（）AIt fails with a Resource Busy error.BIt deletes the rows successfully because the table is locked in SHARE mode.CIt fails to delete the records because the table is locked in EXCLUSIVE mode.DIt deletes the rows successfully because the table is locked in SHARE ROW EXCLUSIVE mode.