单选题Which statement about using RMAN stored scripts is true？（）ATo create and execute an RMAN stored script，you must use a recovery catalog.BWhen executing a stored script and a command fails，the remainder of the script is executed，and a message is written 

 To create and execute an RMAN stored script，you must use a recovery catalog.

 When executing a stored script and a command fails，the remainder of the script is executed，and a message is written to the alert log file.

 RMAN stored scripts can always be executed against any target database that is registered in the recovery catalog.

 When you execute a stored script，it always executes using the persistent channel settings previously set with the CONFIGURE command.