單項(xiàng)選擇題

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 mode
C.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.

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單項(xiàng)選擇題

View the Exhibit to examine the details for an incident. Which statement is true regarding the status of theincident（）

A.The DBA is working on the incident and prefers that the incident be kept in the ADR.
B.The incident is now in the Done state and the ADR can select the incident to be purged.
C.The incident has been newly created and is in the process of collecting diagnostic information.
D.The data collection for the incident is complete and the incident can be packaged and sent to OracleSupport

單項(xiàng)選擇題

View the Exhibit and examine the parameters. User A executes the following command to update the TRANStable：
SQL> UPDATE B.trans SET tr_amt=tr_amt+500 WHERE c_code=’C005’； Before user A issues a COMMIT orROLLBACK command， user B executes the following command on the TRANS table：
SQL> ALTER TABLE trans MODIFY （tr_type VARCHAR2（3））；
What would happen in this scenario（）

A.The ALTER TABLE command modifies the column successfully.
B.The DDL operation gets higher priority and transaction for user A is rolled back.
C.The ALTER TABLE command waits indefinitely until user A ends the transaction.
D.The ALTER TABLE command fails after waiting for 60 seconds due to the resource being busy

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你可能感興趣的試題

View the Exhibit to examine the details for an incident. Which statement is true regarding the status of theincident（）