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我试图使用Java API，开始在Amazon RDS新的MySQL实例 “db.t1.micro” 实例和下面的代码：亚马逊RDS：启动使用JAVA SDK
CreateDBInstanceRequest createDBInstanceRequest = new CreateDBInstanceRequest();
createDBInstanceRequest.setEngine("MySQL");
createDBInstanceRequest.setLicenseModel("general-public-license");
createDBInstanceRequest.setEngineVersion("5.5.25a");
createDBInstanceRequest.setDBInstanceClass("db.t1.micro");
createDBInstanceRequest.setMultiAZ(false);
createDBInstanceRequest.setAutoMinorVersionUpgrade(true);
createDBInstanceRequest.setAllocatedStorage(5);
createDBInstanceRequest.setDBInstanceIdentifier("mydbinstance");
createDBInstanceRequest.setMasterUsername("master");
createDBInstanceRequest.setMasterUserPassword("password");
createDBInstanceRequest.setDBName("dbname");
createDBInstanceRequest.setPort(3306);
createDBInstanceRequest.setDBParameterGroupName("default.mysql5.5");
createDBInstanceRequest.setDBSubnetGroupName("dev");
createDBInstanceRequest.setBackupRetentionPeriod(1);
DBInstance dbInstance = RDS.createDBInstance(createDBInstanceRequest);
问题是，这总是会导致以下错误：
AWS Error Code: InsufficientDBInstanceCapacity, AWS Error Message: Cannot create a database instance because there is no availability zone with sufficient capacity. Please try your request again at a later time.
至于建议，我想在以后的时间，但从来没有能够以编程方式启动新的实例，但是，当我尝试推出使用亚马逊管理控制台实例，使用完全相同的参数，它立即启动。
我也注意到这个问题只发生在数据库实例类“db.t1.micro”。 此实例类是否不可通过API？