fix oracle DDL script syntax and datatypes errors

openid-connect-server-webapp/src/main/resources/db/oracle/oracle_database_tables.sql

@@ -180,8 +180,7 @@ CREATE TABLE client_details (
   initiate_login_uri VARCHAR2(2048),
   clear_access_tokens_on_refresh NUMBER(1) DEFAULT 1 NOT NULL,
   
-  software_statement VARCHAR(4096),
-  software_id VARCHAR(2048),
+  software_id VARCHAR2(2048),
   software_statement VARCHAR2(4000),
 	
   code_challenge_method VARCHAR2(256),
@@ -398,22 +397,23 @@ CREATE TABLE saved_registered_client (
 );
 CREATE SEQUENCE saved_registered_client_seq START WITH 1 INCREMENT BY 1 NOCACHE NOCYCLE;
 
-CREATE TABLE IF NOT EXISTS device_code (
+CREATE TABLE device_code (
 	id NUMBER(19) NOT NULL PRIMARY KEY,
 	device_code VARCHAR2(1024),
 	user_code VARCHAR2(1024),
 	expiration TIMESTAMP,
 	client_id VARCHAR2(256),
-	approved BOOLEAN,
-	auth_holder_id NUMBER(19)	
+	approved NUMBER(1),
+	auth_holder_id NUMBER(19),
+  CONSTRAINT dc_approved_check CHECK (approved in (1,0))
 );
 
-CREATE TABLE IF NOT EXISTS device_code_scope (
+CREATE TABLE device_code_scope (
 	owner_id NUMBER(19) NOT NULL,
 	scope VARCHAR2(256) NOT NULL
 );
 
-CREATE TABLE IF NOT EXISTS device_code_request_parameter (
+CREATE TABLE device_code_request_parameter (
 	owner_id NUMBER(19),
 	param VARCHAR2(2048),
 	val VARCHAR2(2048)