apex_instance_admin.set_parameter('SAML_APEX_CERTIFICATE','... contents of cert.pem ...'); --error

oracle 19.14 on windows 2019; apex 21.2.9; ords 21.4

running script

exec apex_instance_admin.set_parameter('SAML_APEX_CERTIFICATE','... contents of cert.pem ...');

have error:

---ERROR at line 1:

ORA-06502: PL/SQL: numeric or value error

ORA-06512: at "APEX_210200.WWV_FLOW_PUBLIC_KEY_UTIL", line 245

ORA-06512: at "APEX_210200.WWV_FLOW_PUBLIC_KEY_UTIL", line 362

ORA-06512: at "APEX_210200.WWV_FLOW_PUBLIC_KEY_UTIL", line 132

ORA-06512: at "APEX_210200.WWV_FLOW_INSTANCE_ADMIN", line 207

ORA-06512: at "APEX_210200.WWV_FLOW_INSTANCE_ADMIN", line 235

ORA-06512: at "APEX_210200.WWV_FLOW_INSTANCE_ADMIN", line 307

ORA-06512: at line 1

----

running the same script on another database (same version db, apex, ords) no problems;