You create a default Flashback Data Archive FLA1and enable it for the EMPLOYEES table in the HR schema.
After a few days, you want to alter the EMPLOYEES table by executing the command:
SQL> ALTER TABLE EMPLOYEES ADD PHONE NUMBER(12);
Which statement is true about the execution of the command?
Flashback data archives retain historical data across data definition language (DDL) changes to the database as long as the DDL change does not affect the structure of the table. The one exception to this rule is that flashback data archives do retain historical data when a column is added to the table.
Examine the commands executed in CDB$ROOT of your multitenant container database (CDB) that has multiple pluggable databases (PDB):
SQL> CREATE ROLE c ##role1 CONTAINER-ALL;
SQL> GRANT CREATE SESSION, CREATE TABLE TO c##role1 CONTAINER'ALL;
SQL>CREATE USER c##admin IDENTIFIED BY orcl123;
SQL>GRANT c##role1 TO c##admin CONTAINER=ALL;
SQL> GRANT SELECT ON DBA_USERS to c##role1 CONTAINER*ALL;
Which statement is true about granting the select privilege on the DBA_users view to the c##ROLE1role?
Which two statements are true about setting the FAST_START_MTTR_TARGET parameter to a nonzero value? (Choose two.)