将导出的转储文件复制到目标数据库实例

Question

我在同一 VPC 中的 AWS 中托管了 2 个数据库实例：

Oracle Database 12c Enterprise Edition Release 12.1.0.2.0 - 64bit Production
PL/SQL Release 12.1.0.2.0 - Production
"CORE   12.1.0.2.0  Production"
TNS for Linux: Version 12.1.0.2.0 - Production
NLSRTL Version 12.1.0.2.0 - Production

我正在使用 DBMS_FILE_TRANSFER 将转储文件从源数据库实例复制到目标数据库实例。

BEGIN
DBMS_FILE_TRANSFER.PUT_FILE(
source_directory_object       => 'DATA_PUMP_DIR',
source_file_name              => 'hotels.dmp',
destination_directory_object  => 'DATA_PUMP_DIR',
destination_file_name         => 'hotels_copied.dmp', 
destination_database          => 'to_rds' 
);
END;
/

其中 to_rds 是我之前创建的数据库 link 运行ning

create database link to_rds connect to OF_HOTEL identified by OFO
using '(DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)(HOST=hotelsdbtestaws.cwob1oxhu1so.eu-central-1.rds.amazonaws.com)(PORT=1521))(CONNECT_DATA=(SID=ORCL)))';

但是当我运行脚本时我得到了这个错误：

Error report -
ORA-12170: TNS:Connect timeout occurred
ORA-06512: at "SYS.DBMS_FILE_TRANSFER", line 60
ORA-06512: at "SYS.DBMS_FILE_TRANSFER", line 168
ORA-06512: at line 2
12170. 00000 -  "TNS:Connect timeout occurred"
*Cause:    The server shut down because connection establishment or
           communication with a client failed to complete within the allotted time
           interval. This may be a result of network or system delays; or this may
           indicate that a malicious client is trying to cause a Denial of Service
           attack on the server.
*Action:   If the error occurred because of a slow network or system,
           reconfigure one or all of the parameters SQLNET.INBOUND_CONNECT_TIMEOUT,
           SQLNET.SEND_TIMEOUT, SQLNET.RECV_TIMEOUT in sqlnet.ora to larger values.
           If a malicious client is suspected, use the address in sqlnet.log to
           identify the source and restrict access. Note that logged addresses may
           not be reliable as they can be forged (e.g. in TCP/IP).

我尝试设置超时：

SQLNET.INBOUND_CONNECT_TIMEOUT=600;
inbound_connect_timeout_listenername=600;

但是我得到一个错误：

Error starting at line : 12 in command -
SQLNET.INBOUND_CONNECT_TIMEOUT=600
Error report -
Unknown Command


Error starting at line : 13 in command -
inbound_connect_timeout_listenername=0
Error report -
Unknown Command

Answer 1

您需要在两个 ORACLE 实例之间配置对端口 1521 SQL * NET 的访问。有两种方法可以检查访问权限。

1) tnsping db_alias 10
2) telnet IP_Address 1521

如果无法访问，则需要执行亚马逊网站Adjusting Database Links for Use with DB Instances in a VPC.

上描述的程序

To use Oracle database links with Amazon RDS DB instances inside the same VPC or peered VPCs, the two DB instances should have a valid route between them. Verify the valid route between the DB instances by using your VPC routing tables and network access control list (ACL).

The security group of each DB instance must allow ingress to and egress from the other DB instance. The inbound and outbound rules can refer to security groups from the same VPC or a peered VPC. For more information, see Updating Your Security Groups to Reference Peered VPC Security Groups.

If you have configured a custom DNS server using the DHCP Option Sets in your VPC, your custom DNS server must be able to resolve the name of the database link target. For more information, see Setting Up a Custom DNS Server.

将导出的转储文件复制到目标数据库实例

copy an exported dump file to a target DB instance

oracle

amazon-web-services

amazon-rds

oracle12c

oracle-export-dump