产业集聚具有哪些竞争优势？
裂殖
Your database is running in the ARCHIVELOG mode. You have configured RMAN for backup and recovery operations. You execute the following command from the RMAN prompt： RMAN> CONFIGURE CONTROLFILE AUTOBACKUP ON； After executing this command， in which of the following cases will RMAN make an auto-backup of the control file？ （） when you change the name of a datafile。 when you drop a table from the database。 when you take an export of the database。 when you back up the database using OS utilities。 when you issue an ALTER SYSTEM SWITCH LOGFILE statement。 when you issue a BACKUP command from inside the RMAN run block。
What are three actions performed by the mysql_secure_installation tool?（） It prompts you to set the root user account password。 It checks whether file permissions are appropriate within datadir。 It asks to remove the test database, which is generated at installation time。 It can delete any anonymous accounts。 It verifies that all users are configuration with the longer password hash。
游泳生物
Identify two correct options regarding subscription processing.（） (Choose two.)
