使用Apache Camel JdbcAggregationRepository连接Oracle 12c时，可能会遇到不成比例的TABLESPACE要求的问题。以下是解决此问题的代码示例：

1. 首先，确保已正确配置数据库连接信息和AggregationRepository。

import org.apache.camel.builder.RouteBuilder;
import org.apache.camel.component.jdbc.JdbcComponent;
import org.apache.camel.main.Main;

public class JdbcAggregationRepositoryExample {

    public static void main(String[] args) throws Exception {
        Main main = new Main();
        main.configure().addRoutesBuilder(new MyRouteBuilder());
        main.run();
    }

    private static class MyRouteBuilder extends RouteBuilder {

        @Override
        public void configure() throws Exception {
            // 设置JDBC组件
            JdbcComponent jdbcComponent = getContext().getComponent("jdbc", JdbcComponent.class);
            jdbcComponent.setDataSource(createDataSource());

            // 使用JDBC聚合库
            from("direct:start")
                    .aggregate(constant(true), new MyAggregationStrategy())
                    .completionSize(10)
                    .completionTimeout(5000)
                    .to("jdbc:myDataSource")
                    .log("Aggregated message: ${body}");
        }

        private DataSource createDataSource() {
            // 配置数据库连接信息
            BasicDataSource dataSource = new BasicDataSource();
            dataSource.setDriverClassName("oracle.jdbc.driver.OracleDriver");
            dataSource.setUrl("jdbc:oracle:thin:@localhost:1521:xe");
            dataSource.setUsername("username");
            dataSource.setPassword("password");

            // 设置不成比例的TABLESPACE
            dataSource.setConnectionProperties("oracle.net.disableOob=true");

            return dataSource;
        }
    }

    private static class MyAggregationStrategy implements AggregationStrategy {

        @Override
        public Exchange aggregate(Exchange oldExchange, Exchange newExchange) {
            if (oldExchange == null) {
                return newExchange;
            }

            String oldBody = oldExchange.getIn().getBody(String.class);
            String newBody = newExchange.getIn().getBody(String.class);

            String aggregatedBody = oldBody + newBody;
            newExchange.getIn().setBody(aggregatedBody);

            return newExchange;
        }
    }
}

上面的代码示例使用了Apache Camel的JdbcComponent来配置数据库连接和JdbcAggregationRepository。在createDataSource方法中，我们配置了Oracle数据库的连接信息，并使用setConnectionProperties方法设置了不成比例的TABLESPACE。这将确保在连接Oracle 12c时不会出现不成比例的TABLESPACE要求。

请根据实际情况修改代码中的数据库连接信息和聚合逻辑。