| Administrator | 
		You need to open your standby db read-write, right? 
snapshot standby is a good option.
 You can also use the guaranteed restore point;
 
 On Standby DB tier:
 
 alter database recover managed standby database cancel;
 alter database flashback on;
 create restore point OPEN_STANDBY guarantee flashback database;
 alter database activate standby database;
 alter database open;
 
 
 --you shouldn't directly open your standby database. You need to use the mechanisms/technologies which let you continue to feed this standby and make it sync with the PROD, after your developers finish their work.
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