配置oracle stream(step by step setup database level Streams Replication)

oracle stream简介

Stream 是Oracle 的消息队列(也叫Oracle Advanced Queue)技术的一种扩展应用。 Oracle 的消息队列是通过发布/订阅的方式来解决事件管理。流复制(Stream replication)只是基于它的一个数据共享技术，也可以被用作一个可灵活定制的高可用性方案。 它可以实现两个数据库之间数据库级，schema级，Table级的数据同步，并且这种同步可以是双向的。 Oracle Stream也是通过数据冗余来提高可用性，这一点和Data
Guard 类型。

下面是oracle stream 配置的简单过程（Database level）

1，配置数据库为归档模式

2，修改数据库相关的参数，一般需要设置global_names, _job_queue_interval, sga_target, streams_pool_size四个参数

alter system set global_names=true scope=both;
alter system set "_job_queue_interval"=1 scope=spfile;

3，stream数据库用户strmadmin及权限 @both db

create user STRMADMIN identified by STRM#123;

ALTER USER STRMADMIN DEFAULT TABLESPACE USERS
TEMPORARY TABLESPACE TEMP
QUOTA UNLIMITED ON USERS;

GRANT CONNECT, RESOURCE, AQ_ADMINISTRATOR_ROLE,DBA to STRMADMIN;

execute DBMS_STREAMS_AUTH.GRANT_ADMIN_PRIVILEGE('STRMADMIN');

4,配置tnsnames.ora

source 为hrdbprim，target db为hrdb，此处的数据库名称必须和global_name一致

hrdbprim =
(DESCRIPTION =
(ADDRESS = (PROTOCOL = TCP)(HOST = 10.4.124.239)(PORT = 1521))
(CONNECT_DATA =
(SERVER = DEDICATED)
(SERVICE_NAME = hrdbprim)
)
)
hrdb =
(DESCRIPTION =
(ADDRESS = (PROTOCOL = TCP)(HOST = 10.4.124.233)(PORT = 1521))
(CONNECT_DATA =
(SERVER = DEDICATED)
(SERVICE_NAME = hrdb)
)
)

5,开始配置stream

步骤a ,source数据库建立stream队列 ,j建 db link @source

conn strmadmin/STRM#123

BEGIN
DBMS_STREAMS_ADM.SET_UP_QUEUE(
queue_name => 'STREAMS_QUEUE',
queue_table =>'STREAMS_QUEUE_TABLE',
queue_user => 'STRMADMIN');
END;
/

conn sys/oracle as sysdba
create public database link hrdb using 'hrdb';

conn strmadmin/STRM#123

create database link hrdb connect to strmadmin identified by STRM#123;

@target db hrdb
conn sys/oracle as sysdba
create public database link HRDBPRIM using 'HRDBPRIM';

conn strmadmin/STRM#123

create database link HRDBPRIM connect to strmadmin identified by STRM#123;

b, @target hrdb 建stream队列

/* Step 2 - Connect as the Streams Administrator in the target site TARGET and create the streams queue */
conn strmadmin/STRM#123

BEGIN
DBMS_STREAMS_ADM.SET_UP_QUEUE(
queue_name => 'STREAMS_QUEUE',
queue_table =>'STREAMS_QUEUE_TABLE',
queue_user => 'STRMADMIN');
END;
/

c, @source db 建捕获(capture)和传播PROPAGATION 规则

/*Step 3 -Connected to source db, create CAPTURE and PROPAGATION rules */
conn strmadmin/STRM#123@source
BEGIN
DBMS_STREAMS_ADM.ADD_GLOBAL_PROPAGATION_RULES(
streams_name => 'STRMADMIN_PROP',
source_queue_name => 'STRMADMIN.STREAMS_QUEUE',
destination_queue_name => 'STRMADMIN.STREAMS_QUEUE@hrdb',
include_dml => true,
include_ddl => true,
source_database => 'HRDBPRIM');
END;
/

BEGIN
DBMS_STREAMS_ADM.ADD_GLOBAL_RULES(
streams_type => 'CAPTURE',
streams_name => 'STRMADMIN_CAPTURE',
queue_name => 'STRMADMIN.STREAMS_QUEUE',
include_dml => true,
include_ddl => true,
source_database => 'hrdbprim');
END;
/

d, @target HRDB 建apply规则

/*Step 4 - Connected as STRMADMIN at TARGET, create APPLY rules */
conn STRMADMIN/STRMADMIN@TARGET
BEGIN
DBMS_STREAMS_ADM.ADD_GLOBAL_RULES(
streams_type => 'APPLY',
streams_name => 'STRMADMIN_APPLY',
queue_name => 'STRMADMIN.STREAMS_QUEUE',
include_dml => true,
include_ddl => true,
source_database => 'hrdbprim');
END;
/

BEGIN
DBMS_APPLY_ADM.SET_PARAMETER(
apply_name => 'STRMADMIN_APPLY',
parameter => 'disable_on_error',
value => 'n');
END;
/

E：导入导出数据，注意相关参数

/*Step 7 - Take an export of the DB at SOURCE */
exp USERID=SYSTEM/1232@hrdbprim FULL=Y FILE=stream.dmp LOG=stream.log OBJECT_CONSISTENT=Y STATISTICS = NONE

/*Step 8 - Transfer the export dump file to TARGET and import */
imp USERID=SYSTEM/2314@hrdb CONSTRAINTS=Y FULL=Y FILE=stream.dmp IGNORE=Y COMMIT=Y LOG=stream_imp.log STREAMS_INSTANTIATION=Y

F：启动apply和capture

/*Step 9 - Start Apply and capture */

conn strmadmin/STRM#123@hrdb

BEGIN
DBMS_APPLY_ADM.START_APPLY(
apply_name => 'STRMADMIN_APPLY');
END;
/
conn strmadmin/STRM#123@hrdbprim

BEGIN
DBMS_CAPTURE_ADM.START_CAPTURE(
capture_name => 'STRMADMIN_CAPTURE');
END;
/

6，验证结果

@source db  hrdbprim
SQL> insert into w select * from dba_tables;

1211 rows created.

SQL> commit;

Commit complete.

@target hrdb
strmadmin@HRDB1(dtydb3)>/

COUNT(*)
----------
0

strmadmin@HRDB1(dtydb3)>/

COUNT(*)
----------
1211

参考文档

Master Note for Streams Recommended Configuration [ID 418755.1]

How to Create STRMADMIN User and Grant Privileges [ID 786528.1]

How to setup Database Level Streams Replication [ID 459922.1]