DG Broker Setup
Hi,
I am currently setting up a Data Guard environment to make use of the Broker and I have a some basic queries –
I have created a DG configuration on my Primary Instance ( I have not yet enabled the configuration ).
Q1. Do I need to manually replicate the DG configuration on the Standby Databases by repeating the same dgmgrl entries ?
Q2. The 11gR2 Broker Manual states that the databases and Data Guard Broker Config must be set to Max Protection. Yet I have seen other docs that state it can be set to Max Availability. Which mode needs to be used ?
Q3. Is it possible for the Databases to be using one mode but the DG Broker Config to be set to another mode i.e. do you set the mode on the databases and the Broker separately or does the Broker simply pick up the mode that the databases are using ?
Q4. At the moment my protection mode is Max Performance – so do I just need to simply need to change the protection mode used by the databases or is it possible to use DG Broker with Max Performance mode ?
Q5. Do any of my databases need to have Flashback Database enabled if I am using DG Broker ?
Q6. For a failover, do I simply go into dgmgrl of one of my Standby Instances and issue ‘failover to <standby_name>’;
any help greatly appreciated
Jim
Hi Jimbo
First of all, if you are using DGMGRL - Broker - Managed Data Guard configuration, then you must use DGMGRL for all changes on your databases.
I have created a DG configuration on my Primary Instance ( I have not yet enabled the configuration ).
You must add your standby database to this configuration, and enable DG configuration.
Q1. Do I need to manually replicate the DG configuration on the Standby Databases by repeating the same dgmgrl entries ?
Not need any manually replicate the DG configuration on the standby database. When you add standby database to DG configuration.
Then DGMGRL will create automatically same configuration on both side.(in dg config file)
Q2. The 11gR2 Broker Manual states that the databases and Data Guard Broker Config must be set to Max Protection. Yet I have seen other docs that state it can be set to Max Availability. Which mode needs to be used ?
You must use DGMGRL> edit configuration set protection mode as MaxProtection; command for setting Protection mode on DG configuration.
Don't forget LogXpt property must be SYNC on both side.
Q3. Is it possible for the Databases to be using one mode but the DG Broker Config to be set to another mode i.e. do you set the mode on the databases and the Broker separately or does the Broker simply pick up the mode that the databases are using ?
It is not possible. When you set protection mode, it is changind on database protection mode.
If it is different, then you get error on DG configuration.
Q4. At the moment my protection mode is Max Performance – so do I just need to simply need to change the protection mode used by the databases or is it possible to use DG Broker with Max Performance mode ?
Maximum Performace mode is defult protection mode.
Q5. Do any of my databases need to have Flashback Database enabled if I am using DG Broker ?
It is optional and you can use DGMGRL without flashback enable. Flashback enable + Real time apply is best practice instead of DELAY option.
Q6. For a failover, do I simply go into dgmgrl of one of my Standby Instances and issue ‘failover to <standby_name>’;
Yes. Additionaly you can use Fast Start Failover with DGMGRL.
Regards
Mahir M. Quluzade
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=================================================
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Please advice. Thanks!Hello;
Would follow this note :
How to Safely Remove a Data Guard Broker Configuration [ID 261336.1]
What type of second Standby, just another physical ?
Since you don't find my information helpful I won't waste anymore of your time.
Best Regards
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Dataguard broker Warning: ORA-16610
Hi
Oracle 10g.
I just configured dataguard broker and followed all the steps in:
http://apunhiran.blogspot.com/2009/09/how-to-configure-data-guard-broker.html
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DGMGRL> SHOW CONFIGURATION
Configuration
Name: CatalogDR
Enabled: YES
Protection Mode: MaxPerformance
Fast-Start Failover: DISABLED
Databases:
orclprd_wlg - Primary database
orclprd_akl - Physical standby database
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Later
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I checked my setup note and here's what i have on your current error :
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DG Broker - Error is ORA-12521 11gR2 RAC
Hi ,
I have setup DG broker for 11gR2 RAC - Primary and DR (standby) - Grid single node ( non- Rac) . It is R12 apps.
I am getting connection errors from standby to production . Although the there is no problem in arciive log shipping and DG broker setup .
But I m getting constant Error ORA-16664 ( On Primary ) and on standby - Failed to connect to remote database prod1. Error is ORA-12521
Pls advise what is missing . I have recreated password file ,but no luck.
Primary : drcprod11.log
Site prod1dg returned ORA-16664.
Site prod1dg returned ORA-16664.
Data Guard Broker Status Summary:
Type Name Severity Status
Configuration prod1_CONFIG Warning ORA-16607
Primary Database prod1 Success ORA-00000
Physical Standby Database prod1dg Error ORA-16664
Standby - drcprod1.log
Failed to send message to site prod1. Error code is ORA-12521.
02/18/2013 00:01:34
Failed to connect to remote database prod1. Error is ORA-12521
Failed to send message to site pcap1. Error code is ORA-12521.
02/18/2013 00:04:04
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Failed to send message to site pcap1. Error code is ORA-12521.
02/18/2013 00:06:19
Failed to connect to remote database prod1. Error is ORA-12521
Failed to send message to site pcap1. Error code is ORA-12521.
DGMGRL> show configuration
Configuration - prod1_CONFIG
Protection Mode: MaxPerformance
Databases:
prod1 - Primary database
prod1dg - Physical standby database
Fast-Start Failover: DISABLED
Configuration Status:
SUCCESS
DGMGRL> show instance prod1 verbose on database prod1
Instance "prod1" was not found
DGMGRL> show instance prod11 verbose on database prod1
Error: ORA-16606: unable to find property "verbose"
DGMGRL> show instance verbose prod11 on database prod1
Instance 'prod11' of database 'prod1'
Host Name: u01prod1
PFILE:
Properties:
SidName = 'prod11'
StaticConnectIdentifier = 'prod11_local'
StandbyArchiveLocation = '/u01/arch/prod1'
AlternateLocation = ''
LogArchiveTrace = '0'
LogArchiveFormat = 'prod1_%t_%s_%r.arch'
TopWaitEvents = '(monitor)'
Instance Status:
SUCCESS
DGMGRL> show instance verbose prod12 on database prod1
Instance 'prod12' of database 'prod1'
Host Name: u01prod2
PFILE:
Properties:
SidName = 'prod12'
StaticConnectIdentifier = 'prod12_local'
StandbyArchiveLocation = '/u01/arch/prod1'
AlternateLocation = ''
LogArchiveTrace = '0'
LogArchiveFormat = 'prod1_%t_%s_%r.arch'
TopWaitEvents = '(monitor)'
Instance Status:
SUCCESS
DGMGRL> show database verbose prod1dg
Database - prod1dg
Role: PHYSICAL STANDBY
Intended State: APPLY-ON
Transport Lag: 0 seconds
Apply Lag: 0 seconds
Real Time Query: OFF
Instance(s):
prod1
Properties:
DGConnectIdentifier = 'prod1dg'
ObserverConnectIdentifier = ''
LogXptMode = 'ASYNC'
DelayMins = '0'
Binding = 'optional'
MaxFailure = '0'
MaxConnections = '1'
ReopenSecs = '300'
NetTimeout = '30'
RedoCompression = 'DISABLE'
LogShipping = 'ON'
PreferredApplyInstance = ''
ApplyInstanceTimeout = '0'
ApplyParallel = 'AUTO'
StandbyFileManagement = 'AUTO'
ArchiveLagTarget = '0'
LogArchiveMaxProcesses = '8'
LogArchiveMinSucceedDest = '1'
DbFileNameConvert = ''
LogFileNameConvert = ''
FastStartFailoverTarget = ''
InconsistentProperties = '(monitor)'
InconsistentLogXptProps = '(monitor)'
SendQEntries = '(monitor)'
LogXptStatus = '(monitor)'
RecvQEntries = '(monitor)'
SidName = 'prod1'
StaticConnectIdentifier = '(DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=pres1.com)(PORT=1533))(CONNECT_DATA=(SERVICE_NAME=prod1dg_DGMGRL)(INSTANCE_NAME=prod1)(SERVER=DEDICATED)))'
StandbyArchiveLocation = '/u01prod/arch/prod1'
AlternateLocation = ''
LogArchiveTrace = '0'
LogArchiveFormat = 'prod1_%t_%s_%r.arch'
TopWaitEvents = '(monitor)'
Database Status:
DGM-17016: failed to retrieve status for database "prod1dg"
ORA-16664: unable to receive the result from a databaseI have setup DG broker for 11gR2 RAC - Primary and DR (standby) - Grid single node ( non- Rac) . It is R12 apps.
I am getting connection errors from standby to production . Although the there is no problem in arciive log shipping and DG broker setup .
But I m getting constant Error ORA-16664 ( On Primary ) and on standby - Failed to connect to remote database prod1. Error is ORA-12521
Failed to connect to remote database prod1. Error is ORA-12521
Failed to send message to site pcap1. Error code is ORA-12521.It is not an issue with either password file, It having issues to establish connections with "prod1" ,
Have you configured static listener entry?
And What local_listener value you have set ?
From all instances
$lsnrctl status
12521, 00000, "TNS:listener does not currently know of instance requested in connect descriptor"
// *Cause: The listener received a request to establish a connection to a
// database or other service. The connect descriptor received by the listener
// specified in addition to the service name an instance name for an instance
// (usually a database instance) that either has not yet dynamically registered
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// This may be a temporary condition such as after the listener has started,
// but before the database instance has registered with the listener.
// *Action:
// - Wait a moment and try to connect a second time.
// - Check which instances are currently known by the listener by executing:
// lsnrctl services <listener name>
// - Check that the INSTANCE_NAME parameter in the connect descriptor specifies
// an instance name known by the listener.
// - Check for an event in the listener.log file. -
Error: ORA-16778: redo transport error for one or more databases
Hi all
I have 2 database servers"Primary database and physical standby" in test environment( before going to Production)
Before Dataguard broker configuration , DG setup was running fine , redo was being applied and archived on phy standby.
but while enabling configuration i got "Warning: ORA-16607: one or more databases have failed" listener.ora & tnsnames.ora are updated with global_name_DGMGRL
Please help me how can i resolve this issue .Thanks in advance.
[oracle@PRIM ~]$ dgmgrl
DGMGRL for Linux: Version 10.2.0.1.0 - Production
Copyright (c) 2000, 2005, Oracle. All rights reserved.
Welcome to DGMGRL, type "help" for information.
DGMGRL> connect sys
Password:
Connected.
DGMGRL> show configuration
Configuration
Name: test
Enabled: YES
Protection Mode: MaxPerformance
Fast-Start Failover: DISABLED
Databases:
prim - Primary database
stan - Physical standby database
Current status for "test":
Warning: ORA-16607: one or more databases have failed
DGMGRL> show database
show database
^
Syntax error before or at "end-of-line"
DGMGRL> remove configuration
Warning: ORA-16620: one or more databases could not be contacted for a delete operation
Removed configuration
DGMGRL> exit
[oracle@PRIM ~]$ connect sys/sys@prim as sysdba
bash: connect: command not found
[oracle@PRIM ~]$ lsnrctl stop
LSNRCTL for Linux: Version 10.2.0.1.0 - Production on 08-OCT-2006 19:52:30
Copyright (c) 1991, 2005, Oracle. All rights reserved.
Connecting to (DESCRIPTION=(ADDRESS=(PROTOCOL=IPC)(KEY=EXTPROC1)))
The command completed successfully
[oracle@PRIM ~]$ lsnrctl start
LSNRCTL for Linux: Version 10.2.0.1.0 - Production on 08-OCT-2006 19:52:48
Copyright (c) 1991, 2005, Oracle. All rights reserved.
Starting /u01/app/oracle/product/10.2.0/db_1/bin/tnslsnr: please wait...
TNSLSNR for Linux: Version 10.2.0.1.0 - Production
System parameter file is /u01/app/oracle/product/10.2.0/db_1/network/admin/listener.ora
Log messages written to /u01/app/oracle/product/10.2.0/db_1/network/log/listener.log
Listening on: (DESCRIPTION=(ADDRESS=(PROTOCOL=ipc)(KEY=EXTPROC1)))
Listening on: (DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=PRIM)(PORT=1521)))
Connecting to (DESCRIPTION=(ADDRESS=(PROTOCOL=IPC)(KEY=EXTPROC1)))
STATUS of the LISTENER
Alias LISTENER
Version TNSLSNR for Linux: Version 10.2.0.1.0 - Production
Start Date 08-OCT-2006 19:52:48
Uptime 0 days 0 hr. 0 min. 0 sec
Trace Level off
Security ON: Local OS Authentication
SNMP OFF
Listener Parameter File /u01/app/oracle/product/10.2.0/db_1/network/admin/listener.ora
Listener Log File /u01/app/oracle/product/10.2.0/db_1/network/log/listener.log
Listening Endpoints Summary...
(DESCRIPTION=(ADDRESS=(PROTOCOL=ipc)(KEY=EXTPROC1)))
(DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=PRIM)(PORT=1521)))
Services Summary...
Service "PLSExtProc" has 1 instance(s).
Instance "PLSExtProc", status UNKNOWN, has 1 handler(s) for this service...
Service "PRIM_DGMGRLL" has 1 instance(s).
Instance "PRIM", status UNKNOWN, has 1 handler(s) for this service...
The command completed successfully
[oracle@PRIM ~]$ lsnrctl stop
LSNRCTL for Linux: Version 10.2.0.1.0 - Production on 08-OCT-2006 19:54:46
Copyright (c) 1991, 2005, Oracle. All rights reserved.
Connecting to (DESCRIPTION=(ADDRESS=(PROTOCOL=IPC)(KEY=EXTPROC1)))
The command completed successfully
[oracle@PRIM ~]$ lsnrctl start
LSNRCTL for Linux: Version 10.2.0.1.0 - Production on 08-OCT-2006 19:54:59
Copyright (c) 1991, 2005, Oracle. All rights reserved.
Starting /u01/app/oracle/product/10.2.0/db_1/bin/tnslsnr: please wait...
TNSLSNR for Linux: Version 10.2.0.1.0 - Production
System parameter file is /u01/app/oracle/product/10.2.0/db_1/network/admin/listener.ora
Log messages written to /u01/app/oracle/product/10.2.0/db_1/network/log/listener.log
Listening on: (DESCRIPTION=(ADDRESS=(PROTOCOL=ipc)(KEY=EXTPROC1)))
Listening on: (DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=PRIM)(PORT=1521)))
Connecting to (DESCRIPTION=(ADDRESS=(PROTOCOL=IPC)(KEY=EXTPROC1)))
[oracle@PRIM ~]$ dgmgrl
DGMGRL for Linux: Version 10.2.0.1.0 - Production
Copyright (c) 2000, 2005, Oracle. All rights reserved.
Welcome to DGMGRL, type "help" for information.
DGMGRL> connect /
Connected.
DGMGRL> create configuration test as
primary database is PRIM
connect identifier is PRIM
;Configuration "test" created with primary database "prim"
DGMGRL> add database STAN as
connect identifier is STAN
maintained as physical;Database "stan" added
DGMGRL> show configuration
Configuration
Name: test
Enabled: NO
Protection Mode: MaxPerformance
Fast-Start Failover: DISABLED
Databases:
prim - Primary database
stan - Physical standby database
Current status for "test":
DISABLED
DGMGRL> enable configuration
Enabled.
DGMGRL> show configuration
Configuration
Name: test
Enabled: YES
Protection Mode: MaxPerformance
Fast-Start Failover: DISABLED
Databases:
prim - Primary database
stan - Physical standby database
Current status for "test":
Warning: ORA-16607: one or more databases have failed
DGMGRL> show database verbose prim
Database
Name: prim
Role: PRIMARY
Enabled: YES
Intended State: ONLINE
Instance(s):
PRIM
Properties:
InitialConnectIdentifier = 'prim'
LogXptMode = 'ASYNC'
Dependency = ''
DelayMins = '0'
Binding = 'OPTIONAL'
MaxFailure = '0'
MaxConnections = '1'
ReopenSecs = '300'
NetTimeout = '180'
LogShipping = 'ON'
PreferredApplyInstance = ''
ApplyInstanceTimeout = '0'
ApplyParallel = 'AUTO'
StandbyFileManagement = 'AUTO'
ArchiveLagTarget = '0'
LogArchiveMaxProcesses = '30'
LogArchiveMinSucceedDest = '1'
DbFileNameConvert = '/u01/app/oracle/oradata/STAN, /u01/app/oracle/oradata/PRIM'
LogFileNameConvert = '/u01/app/oracle/oradata/STAN, /u01/app/oracle/oradata/PRIM'
FastStartFailoverTarget = ''
StatusReport = '(monitor)'
InconsistentProperties = '(monitor)'
InconsistentLogXptProps = '(monitor)'
SendQEntries = '(monitor)'
LogXptStatus = '(monitor)'
RecvQEntries = '(monitor)'
HostName = 'PRIM'
SidName = 'PRIM'
LocalListenerAddress = '(ADDRESS=(PROTOCOL=tcp)(HOST=PRIM)(PORT=1521))'
StandbyArchiveLocation = '/u01/app/oracle/flash_recovery_area/PRIM/archivelog/'
AlternateLocation = ''
LogArchiveTrace = '0'
LogArchiveFormat = '%t_%s_%r.arc'
LatestLog = '(monitor)'
TopWaitEvents = '(monitor)'
Current status for "prim":
Error: ORA-16778: redo transport error for one or more databases
DGMGRL> show database verbose stan
Database
Name: stan
Role: PHYSICAL STANDBY
Enabled: YES
Intended State: ONLINE
Instance(s):
STAN
Properties:
InitialConnectIdentifier = 'stan'
LogXptMode = 'ASYNC'
Dependency = ''
DelayMins = '0'
Binding = 'OPTIONAL'
MaxFailure = '0'
MaxConnections = '1'
ReopenSecs = '300'
NetTimeout = '180'
LogShipping = 'ON'
PreferredApplyInstance = ''
ApplyInstanceTimeout = '0'
ApplyParallel = 'AUTO'
StandbyFileManagement = 'AUTO'
ArchiveLagTarget = '0'
LogArchiveMaxProcesses = '30'
LogArchiveMinSucceedDest = '1'
DbFileNameConvert = '/u01/app/oracle/oradata/PRIM, /u01/app/oracle/oradata/STAN'
LogFileNameConvert = '/u01/app/oracle/oradata/PRIM, /u01/app/oracle/oradata/STAN'
FastStartFailoverTarget = ''
StatusReport = '(monitor)'
InconsistentProperties = '(monitor)'
InconsistentLogXptProps = '(monitor)'
SendQEntries = '(monitor)'
LogXptStatus = '(monitor)'
RecvQEntries = '(monitor)'
HostName = 'STAND'
SidName = 'STAN'
LocalListenerAddress = '(ADDRESS=(PROTOCOL=tcp)(HOST=STAND)(PORT=1521))'
StandbyArchiveLocation = '/u01/app/oracle/flash_recovery_area/STAN/archivelog/'
AlternateLocation = ''
LogArchiveTrace = '0'
LogArchiveFormat = '%t_%s_%r.arc'
LatestLog = '(monitor)'
TopWaitEvents = '(monitor)'
Current status for "stan":
Error: ORA-12545: Connect failed because target host or object does not exist
DGMGRL>This:
Current status for "stan":
Error: ORA-12545: Connect failed because target host or object does not exist
says that your network setup is not correct. You need to resolve that first.
As for Broker setup steps how about the doc or our Data Guard 11g Handbook?
It's 3 DGMGRL commands so I am not sure what 'steps' you need?
Larry -
Show Database Get "Object was not found"error
Hi there,
I have a weird situation here.
I created Data Guard Broker setup and show configuration return good result.
It is running for quite a while, and I can see if I switch log file on Primary, the Max Seq# is matched between Primary and Standby. Also do a lot of other test query all return good result.
But today when I happen to run Show Database command it says the DB object not found,
and there is no error in DRCxxx.log file.
Did I miss something? Any suggestions are appreciated.
===============Script===================
--Standby
mkdir log1/dgbroker
mkdir log1/dgbroker/XXXPRD2R
mkdir log2/dgbroker
mkdir log2/dgbroker/XXXPRD2R
--Primary
mkdir log1/dgbroker
mkdir log1/dgbroker/XXXPRD2
mkdir log2/dgbroker
mkdir log2/dgbroker/XXXPRD2
-- primary
alter system set dg_broker_config_file1='/oracle/log1/dgbroker/XXXPRD2/dg1XXXPRD2.dat' scope=both;
alter system set dg_broker_config_file2='/oracle/log2/dgbroker/XXXPRD2/dg2XXXPRD2.dat' scope=both;
-- standby
alter system set dg_broker_config_file1='/oracle/log1/dgbroker/XXXPRD2R/dg1XXXPRD2R.dat' scope=both;
alter system set dg_broker_config_file2='/oracle/log2/dgbroker/XXXPRD2R/dg2XXXPRD2R.dat' scope=both;
-- primary
alter system set dg_broker_start=true scope=both;
-- standby
alter system set dg_broker_start=true scope=both;
-- primary
dgmgrl /
create configuration 'dg_XXXPRD2' as primary database is 'XXXPRD2' connect identifier is 'XXXPRD2';
add database 'XXXPRD2R' as connect identifier is 'XXXPRD2R' maintained as physical;
enable configuration;
===============Script===================
DGMGRL> show configuration
Configuration - dg_XXXPRD2
Protection Mode: MaxAvailability
Databases:
XXXPRD2 - Primary database
XXXPRD2R - Physical standby database
Fast-Start Failover: DISABLED
Configuration Status:
SUCCESS
DGMGRL> SHOW DATABASE XXXPRD2
Object "XXXPRD2" was not found
DGMGRL> show database XXXPRD2R
Object "XXXPRD2R" was not found
-----------------------------------------------Hello;
What I have noticed is sometimes single quotes count and sometime they don't.
Try :
SHOW DATABASE 'XXXPRD2';
Test
Welcome to DGMGRL, type "help" for information.
Connected.
DGMGRL> show database standby
Object "standby" was not found
DGMGRL> show database 'standby';
Object "standby" was not found
DGMGRL> show database 'STANDBY';
Database - STANDBY
Role: PHYSICAL STANDBY
Intended State: APPLY-ON
Transport Lag: (unknown)
Apply Lag:
Real Time Query: OFF
Instance(s):
STANDBYSo getting the case matters too.
DGMGRL> SHOW DATABASE STANDBY;
Object "standby" was not found
DGMGRL> Best Regards
mseberg
Edited by: mseberg on Jan 18, 2013 2:21 PM -
JMQ cluster and unstable connections
Hello all.
I have a few architectural questions about building an OpenMQ message-passing infrastructure between multiple offices which do not always have on-line internet connections. We also need to distribute the MQ mesh configuration info.
From the scale of my questions it seems, that I or our developers don't fully understand MQ, because I think that many of our problems and/or solution ideas (below) should already be implemented within the MQ middleware, and not by us from outside it.
The potential client currently has a (relatively ugly) working solution which they wanted to revise for simplification, if possible, but this matter is not urgent and answers are welcome at any timeframe :)
I'd welcome any insights, ideas and pointers as to why our described approach may be plain wrong :)
To sum this post up, here's my short questionnaire:
1) What is a good/best way to distribute MQ mesh config when not all nodes are available simultaneously?
2) What are the limitations on number of brokers and queues in one logical mesh?
3) Should we aim for separate "internal" and "external" MQ networks, or can they be combined into one large net?
4) Should we aim for partial solution external to OpenMQ (such as integration with SMTP for messaging, or SVN for config distribution), or can this quest be solved within OpenMQ functionality?
5) Can a clustered broker be forced to fully start without available master broker connection?
6) Are broker clusters inherently local-network, or is there some standard solution (pattern) for geographically disperse MQ clusters?
7) How to enforce pushing of the messages from one broker to another? Are any priority assignments available for certain brokers and "their" queues?
Detailed rumblings follow below...
We are thinking about implementing JMQ in a geographically disperse project, where it will be used for asynchronous communications to connect application servers in different branch offices with a central office. The problematic part is, that the central and especially branch offices are not expected to be always on-line, hence the MQ - whenever a connection is available, queued messages (requests, responses, etc.) are to be pushed to the other side's MQ broker. And if all goes well with the project, there may eventually be hundreds of such branch offices and more than one central office for failover, and a mesh of interconnection MQ agreements.
The basic idea is simple: an end-user of the app server in a branch generates a request, this request is passed via message queue to another branch or to a central office, then another app server processes it to generate a response and the answer is queued back to the requesting app server. At some time after the initial request, the end-user would see in his web-page that the request's status has been updated with a response value. A branch office's app server and MQ broker may be an appliance-server distributed as a relatively unmaintained "black box".
During the POC we configured several JMQ broker instances in this manner and it worked. From what I gather from our developers, each branch office's request and response queues are separate destinations in the system, and requests (from a certain branch) may be subscribed by any node, and responces (to a certain branch) may be submitted by any node. This may be restricted by passwords and/or certificate-based SSL tunnel channels, for example (suggestions welcome, though).
However, we also wanted to simplify spreading the configuration of the MQ nodes' network by designating "master brokers" (as per JMQ docs) which keep track of the config and each other broker downloads the cluster config from its master. Perhaps it was wrong on our side, and a better idea is available to avoid manual reconfiguration of each MQ broker whenever another broker or a queue destination is added?
Problem here is: it seems an "MQ cluster" is a local-network oriented concept. When we have a master broker in a central office, and the inter-connection is not up, branch offices loop indefinitely waiting for connection to a master, and reject client connections (published JMS port remains 0, and appropriate comments in the log files). In this case the branch office can not function until its JMQ broker connects to a central office, updates the MQ config, and permits client connections to itself.
Also we are not certain (and it seems to be a popular question on Google, too) how to enforce a queued message to be pushed to another side - to a broker "nearest" to the target app server? Can this be done within OpenMQ config, or does this require an MQ client application to read and manipulate such messages somehow? For example, when a branch office's "request" queue has a message, and a connection to central office comes online, this request data should end up in the central office's broker. Apparently, a message which physically remains in the branch office broker when the interconnection goes offline, is of little use to the central appserver...
I was thinking along the lines of different-priority brokers for a certain destinations, so that messages would automatically flow from further brokers to neares ones - like water flows from higher ground to lower ground in an aqueduct. It would then be possible to easily implement transparent routing between branch offices (available at non-intersecting times) via central office (always up).
How many brokers and destination can be interconnected at all (practically or theoretically/hardcoded)?
Possibly, there are other means to do some or all of this?
Ideas we've discussed internally include:
* Multiple networks of MQ brokers:
Have an "internal" broker (cluster) in each branch office which talks to the app server, and a separate "external" broker which is clustered with the central office's "master broker". Some branch office application transfers messages between two brokers local to its branch. Thus the local appserver works okay, and remote queuing works whenever network is available.
Possibly, the central office should also have separate internal and external broker setups?
* Multi-tiered net of MQ brokers:
Perhaps there can be "clusters of clusters" - with "external" tier-1 brokers being directly master brokers for local "internal" tier-2 clusters? Otherwise the idea of "miltiple networks of MQ brokers" above, without an extra app to relay messages between MQ brokers local to this app.
* Multi-protocol implementation of MQ+SMTP(+POP3/IMAP)
Many of our questions are solvable by SMTP. That is, we can send messages to a mailbox residing on a specific server (local in each office), and local appserver clients retrieve them by POP3 from the local mailbox server, and then submit responses over SMTP. This is approximately how the client currently solves this task now.
We don't really want to invent a bicycle, but maybe this approach can also be applied to JMQ (asynch traffic not over MQ protocol, but over SMTP like in SOAP-SMTP vs. SOAP-HTTP webservices)?
* HTTP/RCS-based config file:
The OpenMQ config allows for the detailed configuration file to be available in local filesystem or on a web server. It is possible to fetch the config file from a central office whenever the connection is up (wget, svn/cvs/etc.) and restart the branch broker.
Why is this approach good or bad? Advocates welcome :)
Thanks for reading up to the end,
and thanks in advance for any replies,
//Jim KlimovHello all.
I have a few architectural questions about building an OpenMQ message-passing infrastructure between multiple offices which do not always have on-line internet connections. We also need to distribute the MQ mesh configuration info.
From the scale of my questions it seems, that I or our developers don't fully understand MQ, because I think that many of our problems and/or solution ideas (below) should already be implemented within the MQ middleware, and not by us from outside it.
The potential client currently has a (relatively ugly) working solution which they wanted to revise for simplification, if possible, but this matter is not urgent and answers are welcome at any timeframe :)
I'd welcome any insights, ideas and pointers as to why our described approach may be plain wrong :)
To sum this post up, here's my short questionnaire:
1) What is a good/best way to distribute MQ mesh config when not all nodes are available simultaneously?
2) What are the limitations on number of brokers and queues in one logical mesh?
3) Should we aim for separate "internal" and "external" MQ networks, or can they be combined into one large net?
4) Should we aim for partial solution external to OpenMQ (such as integration with SMTP for messaging, or SVN for config distribution), or can this quest be solved within OpenMQ functionality?
5) Can a clustered broker be forced to fully start without available master broker connection?
6) Are broker clusters inherently local-network, or is there some standard solution (pattern) for geographically disperse MQ clusters?
7) How to enforce pushing of the messages from one broker to another? Are any priority assignments available for certain brokers and "their" queues?
Detailed rumblings follow below...
We are thinking about implementing JMQ in a geographically disperse project, where it will be used for asynchronous communications to connect application servers in different branch offices with a central office. The problematic part is, that the central and especially branch offices are not expected to be always on-line, hence the MQ - whenever a connection is available, queued messages (requests, responses, etc.) are to be pushed to the other side's MQ broker. And if all goes well with the project, there may eventually be hundreds of such branch offices and more than one central office for failover, and a mesh of interconnection MQ agreements.
The basic idea is simple: an end-user of the app server in a branch generates a request, this request is passed via message queue to another branch or to a central office, then another app server processes it to generate a response and the answer is queued back to the requesting app server. At some time after the initial request, the end-user would see in his web-page that the request's status has been updated with a response value. A branch office's app server and MQ broker may be an appliance-server distributed as a relatively unmaintained "black box".
During the POC we configured several JMQ broker instances in this manner and it worked. From what I gather from our developers, each branch office's request and response queues are separate destinations in the system, and requests (from a certain branch) may be subscribed by any node, and responces (to a certain branch) may be submitted by any node. This may be restricted by passwords and/or certificate-based SSL tunnel channels, for example (suggestions welcome, though).
However, we also wanted to simplify spreading the configuration of the MQ nodes' network by designating "master brokers" (as per JMQ docs) which keep track of the config and each other broker downloads the cluster config from its master. Perhaps it was wrong on our side, and a better idea is available to avoid manual reconfiguration of each MQ broker whenever another broker or a queue destination is added?
Problem here is: it seems an "MQ cluster" is a local-network oriented concept. When we have a master broker in a central office, and the inter-connection is not up, branch offices loop indefinitely waiting for connection to a master, and reject client connections (published JMS port remains 0, and appropriate comments in the log files). In this case the branch office can not function until its JMQ broker connects to a central office, updates the MQ config, and permits client connections to itself.
Also we are not certain (and it seems to be a popular question on Google, too) how to enforce a queued message to be pushed to another side - to a broker "nearest" to the target app server? Can this be done within OpenMQ config, or does this require an MQ client application to read and manipulate such messages somehow? For example, when a branch office's "request" queue has a message, and a connection to central office comes online, this request data should end up in the central office's broker. Apparently, a message which physically remains in the branch office broker when the interconnection goes offline, is of little use to the central appserver...
I was thinking along the lines of different-priority brokers for a certain destinations, so that messages would automatically flow from further brokers to neares ones - like water flows from higher ground to lower ground in an aqueduct. It would then be possible to easily implement transparent routing between branch offices (available at non-intersecting times) via central office (always up).
How many brokers and destination can be interconnected at all (practically or theoretically/hardcoded)?
Possibly, there are other means to do some or all of this?
Ideas we've discussed internally include:
* Multiple networks of MQ brokers:
Have an "internal" broker (cluster) in each branch office which talks to the app server, and a separate "external" broker which is clustered with the central office's "master broker". Some branch office application transfers messages between two brokers local to its branch. Thus the local appserver works okay, and remote queuing works whenever network is available.
Possibly, the central office should also have separate internal and external broker setups?
* Multi-tiered net of MQ brokers:
Perhaps there can be "clusters of clusters" - with "external" tier-1 brokers being directly master brokers for local "internal" tier-2 clusters? Otherwise the idea of "miltiple networks of MQ brokers" above, without an extra app to relay messages between MQ brokers local to this app.
* Multi-protocol implementation of MQ+SMTP(+POP3/IMAP)
Many of our questions are solvable by SMTP. That is, we can send messages to a mailbox residing on a specific server (local in each office), and local appserver clients retrieve them by POP3 from the local mailbox server, and then submit responses over SMTP. This is approximately how the client currently solves this task now.
We don't really want to invent a bicycle, but maybe this approach can also be applied to JMQ (asynch traffic not over MQ protocol, but over SMTP like in SOAP-SMTP vs. SOAP-HTTP webservices)?
* HTTP/RCS-based config file:
The OpenMQ config allows for the detailed configuration file to be available in local filesystem or on a web server. It is possible to fetch the config file from a central office whenever the connection is up (wget, svn/cvs/etc.) and restart the branch broker.
Why is this approach good or bad? Advocates welcome :)
Thanks for reading up to the end,
and thanks in advance for any replies,
//Jim Klimov -
2012 r2 rds deployment cannot connect to sql server after reboot
We have a ha connection broker setup with 2 connection brokers and everything was working fine up untill the servers were rebooted for updates. Now users cannot connect to thier collections and I have an error in the event log that the deployment could not
connect to the sql database.
at this point I am assume that the issue is related to security. I am able to query the database as admin from the effected servers and other services that use other databases in the same sql instance are no5 having issues.
I have checked the security group that both cb servers should be in and they are in the group and the group has sysadmin and dbo within sql
any ideas?
Please remember to mark my replies as answers if they helpHi,
Thank you for posting in Windows Server Forum.
Can you please create the database manually with below command and verify.
PS C:\> Set-RDConnectionBrokerHighAvailability –DatabaseConnectionString
"DRIVER=SQL Server Native Client 11.0;SERVER=<SQL Server
Name>;Trusted_Connection=Yes;APP=Remote Desktop Services Connection Broker;
DATABASE=<DB Name>" -DatabaseFilePath "C:\DbFiles\<DbName>.mdf"
-ClientAccessName "<DNS RR Name>"
Grant DBO permissions to the service account on the RDS server and try to run your wizard again.
More information.
RD Connection Broker High Availability in Windows Server 2012
http://blogs.msdn.com/b/rds/archive/2012/06/27/rd-connection-broker-high-availability-in-windows-server-2012.aspx
Hope it helps!
Thanks.
Dharmesh Solanki
TechNet Community Support -
Third Party Integration for Template Based Hire in PS 9.1
Hi All,
I am implementing template based hire on PS 9.1.
I am receiving the applicant details from a third party vendor in a xml message.
Requirement is to insert the applicant details into template based hire records (HR_TBH_HDR and HR_TBH_DATA).
I am able to subscribe the field values from xml message. But facing the problem while inserting the values into base records.
I am trying to use Component Interface on HR_TBH_JOB component. The pages on this component are dynamically build and so the records.
If anyone has worked on the third party integration for Template Based Hire in PS 9.1, please let me know your suggestion for insertion into template based hire records.
Thanks,
VijayHi Michel,
I am not getting any error message as I haven't completed the coding yet.
I will go more on the technical stuff so that the issue will be more clear.
I am using the Integration Broker setup to receive the xml message from third party.
I have written the app package and added that as handler into the service operation. as of now I am able to subscribe the xml message. I am having the field values into the variables.
For insertion of those values into template based hire (TBH) records (HR_THB_HDR and HR_TBH_DATA) I created a new CI on HR_TBH_JOB component.
But when I analysed this component I came to know that Pages, Sections on the Pages and the fields of the sections are dynamically build based on the Template.
On HR_TBH_DATA page PeopleSoft is using derived record (HR_TBH_SCR_WRK). Field values are assigned to this record fields bsaed on the section of the template.
Here is issue I am facing while coding. As there is only one record (HR_TBH_SCR_WRK) to store the all the values from the template, I am not able to understand that how to assign the variables to CI variable. I am looking for the logic, so that the CI will work normally.
If you have any sugestion to insert the data into TBH records other than using CI, will be appriciated.
Thanks -
Related Information link on Vendor & Voucher Component not appearing on 9.1
Greetings All,
I am not able to see the "Related Information link" on the Vendor & Voucher Components. I know this feture is something new and delivered as part of 9.1; Can someone help me out? How can i see this on my components.
Thanks in advance.Do you have an authentication domain setup for PIA/web profile?
Is your integration broker setup properly?
Have a look at this post
http://bloggingaboutoracleapplications.org/setting-up-predelivered-related-content-services/
Edited by: Hakan Biroglu on May 30, 2013 9:23 PM
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