Cause: An attempt was made to commit a
non-autonomous transaction from within a change password trigger or password
verification routine
Action: Remove the COMMIT from the
password trigger or password verification routine

Relared Errors:
ORA-28020:
IDENTIFIED GLOBALLY already specified
ORA-28021:
cannot grant global roles
ORA-28022:
cannot grant external roles to global user or role
ORA-28023: must
revoke grants of this role to other user(s) first
ORA-28024: must
revoke grants of external roles to this role/user
ORA-28025:
missing or null external name
ORA-28026: user
with same external name already exists
ORA-28027:
privileged database links may be used by global users
ORA-28028:
could not authenticate remote server
ORA-28029:
could not authorize remote server for user string