12c TDE : ORA-28354 ORA-28417: password-based keystore is not open

SQL> ADMINISTER KEY MANAGEMENT SET KEYSTORE OPEN IDENTIFIED BY "wallet_password" CONTAINER =all;
ADMINISTER KEY MANAGEMENT SET KEYSTORE OPEN IDENTIFIED BY "wallet_password" CONTAINER =all
*
ERROR at line 1:
ORA-28354: Encryption wallet, auto login wallet, or HSM is already open


SQL>ADMINISTER KEY MANAGEMENT SET KEY IDENTIFIED BY "wallet_password" WITH BACKUP USING 'first_key_backup' CONTAINER = ALL;

ERROR at line 1:
ORA-28417: password-based keystore is not open

$mv cwallet.sso cwallet.sso.bkp

SQL>administer key management set keystore close;

SQL>administer key management set keystore open identified by "wallet_password" ;

SQL>ADMINISTER KEY MANAGEMENT SET KEY IDENTIFIED BY "wallet_password" WITH BACKUP USING 'first_key_backup' CONTAINER = ALL;

keystore altered.

SQL>administer key management create AUTO_LOGIN keystore from keystore '<wallet directory>' identified by  "wallet_password" ;