Altering user password in oracle analytics cloud database

ERROR at line 1:

ORA-65048: error encountered when processing the current DDL statement in

pluggable database OACDEVPDB1

ORA-01918: user 'USER1' does not exist

Enable oracle script as below

Sql> alter session set “_ORACLE_SCRIPT”=true;

Disable oracle script:

Sql> alter session set “_ORACLE_SCRIPT”=false;