ASM Network
With Flex ASM Oracle 12c, a new type of network is called the ASM network. it is used for communication between ASM and its clients and is accessile on all the nodes. All ASM clients in the cluster have access to one or ore ASM network. Also it is possible to configure single network can perform both function as a private and an ASM network (oifcfg getif, you should see cluster_interconnect,asm)
ASM Listeners:
To support FLex ASM, a set of ASM listeners are configured for every ASM network. Up to three ASM listener addresses are registred as remote listeners in each client database instance. All clients connections are load balanced across the entire set of ASM instances
ora.ASMNET1LSNR_ASM.lsnr
ONLINE ONLINE glsdb01 STABLE
ONLINE ONLINE glsdb02 STABLE
ONLINE ONLINE glsdb03 STABLE
ADVM Proxy:
ASM Dynamic Volume Manager (ADVM) Proxy is a special Orale instance. It enables ADVM to connect to Flex ASM and is required to run on the same node as ADVM and ACFS. It can be shutdown when ACFS is not running
The ADVM proxy instance has its ORACLE_SID set to +APX<node number>
oracle 26722 1 0 13:33 ? 00:00:00 apx_pmon_+APX1
ora.proxy_advm
ONLINE ONLINE glsdb01 STABLE
ONLINE ONLINE glsdb02 STABLE
ONLINE ONLINE glsdb03 STABLE
Some useful commands to administer Flex ASM:
With Flex ASM Oracle 12c, a new type of network is called the ASM network. it is used for communication between ASM and its clients and is accessile on all the nodes. All ASM clients in the cluster have access to one or ore ASM network. Also it is possible to configure single network can perform both function as a private and an ASM network (oifcfg getif, you should see cluster_interconnect,asm)
ASM Listeners:
To support FLex ASM, a set of ASM listeners are configured for every ASM network. Up to three ASM listener addresses are registred as remote listeners in each client database instance. All clients connections are load balanced across the entire set of ASM instances
ora.ASMNET1LSNR_ASM.lsnr
ONLINE ONLINE glsdb01 STABLE
ONLINE ONLINE glsdb02 STABLE
ONLINE ONLINE glsdb03 STABLE
ADVM Proxy:
ASM Dynamic Volume Manager (ADVM) Proxy is a special Orale instance. It enables ADVM to connect to Flex ASM and is required to run on the same node as ADVM and ACFS. It can be shutdown when ACFS is not running
The ADVM proxy instance has its ORACLE_SID set to +APX<node number>
oracle 26722 1 0 13:33 ? 00:00:00 apx_pmon_+APX1
ora.proxy_advm
ONLINE ONLINE glsdb01 STABLE
ONLINE ONLINE glsdb02 STABLE
ONLINE ONLINE glsdb03 STABLE
Some useful commands to administer Flex ASM:
srvctl config asm
ASM home: /u01/oracle/12.1.0.1/grid
Password file: +DBA_DATA501/ASM/PASSWORD/pwdasm.490.826738119
ASM listener: LISTENER
ASM instance count: ALL
Cluster ASM listener: ASMNET1LSNR_ASM
+ASM1 > srvctl status asm -detail
ASM is running on glsdb01,glsdb02
ASM is enabled.
+ASM1 > srvctl status asm -proxy -detail
ADVM proxy is running on node glsdb01,glsdb02
ADVM proxy is enabled
ASM and ADVM Proxy instances use memory_target=1076M. Default instance settings are suitable most situations.
+ASM1 > crsctl status resource ora.asm -f | grep CARDINALITY=
CARDINALITY=%CRS_HUB_SIZE%
To set cardinality for Flex ASM instances
srvctl modify asm -count 3
crsctl status resource ora.asm -f | grep CARDINALITY=
CARDINALITY=3
+ASM1 > srvctl config asm
ASM home: /u01/oracle/12.1.0.1/grid
Password file: +DBA_DATA501/ASM/PASSWORD/pwdasm.490.826738119
ASM listener: LISTENER
ASM instance count: 3
Cluster ASM listener: ASMNET1LSNR_ASM
Monitor Flex ASM Connections:
select instance_name, status, db_name from v$asm_client
INSTANCE_NAME STATUS DB_NAME
---------------------------------------------------------------- ------------ --------
+ASM1 CONNECTED +ASM
+ASM1 CONNECTED +ASM
+APX1 CONNECTED +APX
GLSTOOLS1 CONNECTED GLSTOOLS
-MGMTDB CONNECTED _mgmtdb
Password file: +DBA_DATA501/ASM/PASSWORD/pwdasm.490.826738119
ASM listener: LISTENER
ASM instance count: ALL
Cluster ASM listener: ASMNET1LSNR_ASM
+ASM1 > srvctl status asm -detail
ASM is running on glsdb01,glsdb02
ASM is enabled.
+ASM1 > srvctl status asm -proxy -detail
ADVM proxy is running on node glsdb01,glsdb02
ADVM proxy is enabled
ASM and ADVM Proxy instances use memory_target=1076M. Default instance settings are suitable most situations.
+ASM1 > crsctl status resource ora.asm -f | grep CARDINALITY=
CARDINALITY=%CRS_HUB_SIZE%
To set cardinality for Flex ASM instances
srvctl modify asm -count 3
crsctl status resource ora.asm -f | grep CARDINALITY=
CARDINALITY=3
+ASM1 > srvctl config asm
ASM home: /u01/oracle/12.1.0.1/grid
Password file: +DBA_DATA501/ASM/PASSWORD/pwdasm.490.826738119
ASM listener: LISTENER
ASM instance count: 3
Cluster ASM listener: ASMNET1LSNR_ASM
Monitor Flex ASM Connections:
select instance_name, status, db_name from v$asm_client
INSTANCE_NAME STATUS DB_NAME
---------------------------------------------------------------- ------------ --------
+ASM1 CONNECTED +ASM
+ASM1 CONNECTED +ASM
+APX1 CONNECTED +APX
GLSTOOLS1 CONNECTED GLSTOOLS
-MGMTDB CONNECTED _mgmtdb
No comments:
Post a Comment