在Oracle 12c上實施ACFS replication

環境: qc550705 & qc550707， AIX6.1+12c RAC

Primary FS： qc550705:/acfs3

Standby FS： qc550707:/acfsstd1

實施前提：primary FS的可用空間必須等於其已使用空間

以下是實施Replication的步驟：

1、 建立replication admin(一個節點上操作)

grid@qc550705:/home/grid>sqlplus "/as sysasm"

SQL*Plus: Release 12.1.0.1.0 Production on Fri Feb 14 16:24:33 2014

Connected to:

Oracle Database 12c Enterprise Edition Release 12.1.0.1.0 - 64bit Production

With the Real Application Clusters and Automatic Storage Management options

SQL> CREATE USER acfsrep1 IDENTIFIED BY "773946";

User created.

SQL> GRANT sysasm,sysdba TO acfsrep1;

Grant succeeded.。

2、 建立standby FS

--Add ACFS volume

SQL> select a.group_number,b.name,a.name,value from v$asm_attribute a,v$asm_diskgroup b where lower(a.name) like '%compatible%' and b.group_number=a.group_number;

GROUP_NUMBER NAME NAME VALUE

------------ ---------------------------------------- ---------------------------------------- ------------------------------

1 ACFSDG compatible.asm 12.1.0.0.0

1 ACFSDG compatible.rdbms 12.1.0.0.0

1 ACFSDG compatible.advm 12.1.0.0.0

2 SYSDG compatible.asm 12.1.0.0.0

2 SYSDG compatible.rdbms 10.1.0.0.0

SQL> alter diskgroup acfsdg add volume acfsvol_std1 size 16G unprotected stripe_columns 1;

Diskgroup altered.

SQL> quit

Disconnected from Oracle Database 12c Enterprise Edition Release 12.1.0.1.0 - 64bit Production

With the Real Application Clusters and Automatic Storage Management options

grid@qc550707:/home/grid>ls -l /dev/asm/acfsvol*

brw-rw-r-- 1 root asmadmin 50,24577 Jan 29 13:46 /dev/asm/acfsvol1-48

brw-rw-r-- 1 root asmadmin 50,24578 Jan 29 12:31 /dev/asm/acfsvol3-48

brw-rw-r-- 1 root asmadmin 50,24579 Feb 14 16:32 /dev/asm/acfsvol_std1-48

grid@qc550707:/home/grid>mkfs -V acfs -s 16G /dev/asm/acfsvol_std1-48

mkfs: version = 12.1.0.1.0

mkfs: on-disk version = 39.0

mkfs: volume = /dev/asm/acfsvol_std1-48

mkfs: volume size = 17179869184

mkfs: Format complete.

--Mount /acfsstd1

root@qc550707:/>srvctl add filesystem -device /dev/asm/acfsvol_std1-48 -path /acfsstd1 -node qc550707

root@qc550707:/>srvctl start filesystem -device /dev/asm/acfsvol_std1-48 -node qc550707

root@qc550707:/>crsctl status res ora.acfsdg.acfsvol_std1.acfs -t

--------------------------------------------------------------------------------

Name Target State Server State details

--------------------------------------------------------------------------------

Cluster Resources

--------------------------------------------------------------------------------

ora.acfsdg.acfsvol_std1.acfs

1 ONLINE ONLINE qc550707 mounted on /acfsstd1

,STABLE

--------------------------------------------------------------------------------

3、 為ASM instances增加ACFS replication專用的Service(兩節點都要執行)

--add service name for +ASM1

grid@qc550705:/home/grid>sqlplus "/as sysasm"

SQL*Plus: Release 12.1.0.1.0 Production on Fri Feb 14 16:36:29 2014

Connected to:

Oracle Database 12c Enterprise Edition Release 12.1.0.1.0 - 64bit Production

With the Real Application Clusters and Automatic Storage Management options

SQL> alter system set service_names='+ASM1,primary_acfsrep' sid='+ASM1';

System altered.

SQL> show parameter service_name

NAME TYPE VALUE

------------------------------------ ----------- ------------------------------

service_names string +ASM1,primary_acfsrep

--add service name for +ASM1 & +ASM2

grid@qc550707:/home/grid>sqlplus '/as sysasm'

SQL*Plus: Release 12.1.0.1.0 Production on Fri Feb 14 16:37:06 2014

Connected to:

Oracle Database 12c Enterprise Edition Release 12.1.0.1.0 - 64bit Production

With the Real Application Clusters and Automatic Storage Management options

SQL> alter system set service_names='+ASM2,standby_acfsrep' sid='+ASM2';

System altered.

SQL> show parameter service_name

NAME TYPE VALUE

------------------------------------ ----------- ------------------------------

service_names string +ASM2,standby_acfsrep

4、 在Primary 和 Standby節點tnsnames.ora檔案中增加指向ASM instance的連線串

--add standby FS net service name to tnsnames.ora in Primary node qc550705

standby_acfsrep=(DESCRIPTION=

(ADDRESS=(PROTOCOL=tcp)(HOST=qc550707)(PORT=1521))

(CONNECT_DATA=(SERVICE_NAME=standby_acfsrep)))

--add Primary FS net service name to tnsnames.ora in standby node qc550707

primary_acfsrep=(DESCRIPTION=

(ADDRESS=(PROTOCOL=tcp)(HOST=qc550705)(PORT=1521))

(CONNECT_DATA=(SERVICE_NAME=primary_acfsrep)))

--Test connection to standby ASM instance using sqlplus on primary node

sqlplus acfsrep1/773946@standby_acfsrep as sysasm

--Test connection to primary ASM instance using sqlplus on standby node

sqlplus acfsrep1/773946@primary_acfsrep as sysasm

5、 在Standby node和Primary node上發起replication initialize

--initialize standby FS

root@qc550707:/>acfsutil repl init standby -p acfsrep1/773946@primary_acfsrep -c standby_acfsrep /acfsstd1

Registering with user specified service name-standby_acfsrep

--觀察standby node上的複製已經啟動

root@qc550707:/>acfsutil repl info -c -v /acfsstd1

Site: Standby

Standby status: Initializing

Initializing directories

Background Resources: 4 of 4 Online

Standby mount point: /acfsstd1

Standby Oracle Net service name: standby_acfsrep

Primary mount point:

Primary Oracle Net service name: primary_acfsrep

Primary Oracle Net alias: repladm/****@primary_acfsrep

Replicated tags:

Log compression: Off

Debug log level: 2

--緊接著在Primary node上發起ACFS replication的操作

/sbin/acfsutil repl init primary -s acfsrep1/773946@standby_acfsrep -m /acfsstd1 -c primary_acfsrep /acfs3

root@qc550705:/>/sbin/acfsutil repl init primary -s acfsrep1/773946@standby_acfsrep -m /acfsstd1 -c primary_acfsrep /acfs3

validating the remote connection

remote connection has been established

Registering with user specified service name-primary_acfsrep

The standby replication site is initialized. ACFS replication will begin.

6、 驗證replication是否已經完成

--Primary node

root@qc550705:/acfs3/.ACFS/repl/logs>acfsutil repl info -c -v /acfs3

Site: Primary

Lag Time: 00:00:00

Primary status: Online

Background Resources: 3 of 3 Online

Primary mount point: /acfs3

Primary Oracle Net service name: primary_acfsrep

Standby mount point: /acfsstd1

Standby Oracle Net service name: standby_acfsrep

Standby Oracle Net alias: acfsrep1/****@standby_acfsrep

Replicated tags:

Log compression: Off

Debug log level: 2

--Standby node

root@qc550707:/>acfsutil repl info -c -v /acfsstd1

Site: Standby

Standby status: Online

Last sync time with primary: Tue Mar 25 11:46:09 2014

Background Resources: 4 of 4 Online

Standby mount point: /acfsstd1

Standby Oracle Net service name: standby_acfsrep

Primary mount point: /acfs3

Primary Oracle Net service name: primary_acfsrep

Primary Oracle Net alias: acfsrep1/****@primary_acfsrep

Replicated tags:

Log compression: Off

Debug log level: 2

實施過程中的注意事項：

(1) 在standby node上發起initial replication操作後要緊接著在primary node上發起initial replication操作，否則standby node上的FS會一直處於initializing狀態，且日誌裡還有有如下顯示，the truck config information是由primary node生成的：

transportstdbyacfsvol_std1-48.log:2014-03-25 10:40:35.433: [transprt][/acfsstd1]Waiting for truck config info...sleeping

(2) Primary FS中必須要有一半的空餘空間用於存放Primary log,位置在/acfs3/.ACFS/repl目錄下，一旦Primary FS的可用空間少於2G，複製就會停止，在/oracle/app/grid/product/12.1.0/grid_1/log/qc550705/acfs/replication/monitorprimacfsvol3-48.log 日誌裡會有如下報錯：[ monitor][/acfs3]usrmCheckFreeSpace: primary replication file system has 2GB or less space available per active node. Automatically terminating replication. Flags: 0xE3

在Oracle 12c上實施ACFS replication

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