ya se obtienen las firmas en Base64, ya solo faltaria agregarlas a la insercion

src/main/resources/application.properties

@@ -11,11 +11,13 @@ spring.jpa.defer-datasource-initialization = true
 
 
 # Conexion a la base de datos Comercial
-spring.datasource.url=jdbc:oracle:thin:@//svrcomer:1521/comerpdb.JUMAPACELAYA.GOB.MX
+spring.datasource.url=jdbc:oracle:thin:@svrcomer:1521/comerpdb.JUMAPACELAYA.GOB.MX
 spring.datasource.username=Comercial
 spring.datasource.password=Comercial
 spring.datasource.driver-class-name=oracle.jdbc.OracleDriver
-spring.jpa.properties.hibernate.dialect=org.hibernate.dialect.OracleDialect
+spring.datasource.hikari.connection-timeout=60000
+spring.datasource.hikari.maximum-pool-size=5
+logging.level.com.zaxxer.hikari=DEBUG
 spring.jpa.hibernate.ddl-auto=none
 spring.jpa.show-sql=true
 spring.jpa.properties.hibernate.format_sql=true