SQL & PL/SQL

Dear ALL

I performed Full Database expdp and impdp from Production to test server its successful but while creating any user or changing password its shows me error below

SQL> create user bam identified by bam
2 default tablespace users
3 temporary tablespace temp
4 quota unlimited on users;
create user bam identified by bam
*
ERROR at line 1:
ORA-00604: error occurred at recursive SQL level 1
ORA-06502: PL/SQL: numeric or value error: character string buffer too small
ORA-06512: at line 7


SQL> alter user system identified by 12345;
alter user system identified by 12345
*
ERROR at line 1:
ORA-00604: error occurred at recursive SQL level 1
ORA-06502: PL/SQL: numeric or value error: character string buffer too small
ORA-06512: at line 7

kindly help me to resolve this issue.

Thanks.