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SQL DBA Doubts - Rajeshn29


SQL DBA Doubts - Rajeshn29

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rajeshn29.dba
rajeshn29.dba
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Hi Team,

1. How to apply service pack active - active cluster node. 2005 & 2008
I have 2 active – active nodes like (A,B) both having 2 instances
On ‘A’ node instance 1 On node’ B’ instance 2 having now tell me how to apply service pack on active-active environment.
2. After migration of 2005 to 2008 database migration compatibility level I need to change 90 to 100?? if I’m not change what was the impact.
3. What are replication jobs will create in transactional replication.
4. How to check no of scribers in SQL server instance. In my case I’m having n – number of subscribers. Can you please guide me best approach.

Regards :
********
Rajesh
rajeshn29.dba
rajeshn29.dba
Old Hand
Old Hand (343 reputation)Old Hand (343 reputation)Old Hand (343 reputation)Old Hand (343 reputation)Old Hand (343 reputation)Old Hand (343 reputation)Old Hand (343 reputation)Old Hand (343 reputation)

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Points: 343 Visits: 310
Hi Team,

can you please reply on this , thanks in advanced
RTaylor2208
RTaylor2208
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rajeshn29.dba (12/12/2013)
Hi Team,

1. How to apply service pack active - active cluster node. 2005 & 2008
I have 2 active – active nodes like (A,B) both having 2 instances
On ‘A’ node instance 1 On node’ B’ instance 2 having now tell me how to apply service pack on active-active environment.
2. After migration of 2005 to 2008 database migration compatibility level I need to change 90 to 100?? if I’m not change what was the impact.
3. What are replication jobs will create in transactional replication.
4. How to check no of scribers in SQL server instance. In my case I’m having n – number of subscribers. Can you please guide me best approach.



First off I would take a little more time wording your question as its not particularly clear.

Q:
How to apply service pack active - active cluster node. 2005 & 2008 I have 2 active – active nodes like (A,B) both having 2 instances On ‘A’ node instance 1 On node’ B’ instance 2 having now tell me how to apply service pack on active-active environment.

A:
Anyway, when patching a cluster, service pack the passive nodes for you instances first. So even though you have at least 1 active instance on each node, you will also have passive instances.

Once all the passive instances have been service packed, failover the instances from there current active node to the passive node, this will upgrade the system databases and will mean that the failover will take a few minutes longer than usual. Once the former active nodes are now passive, apply the service pack to those instances on the passive node.


Q:
After migration of 2005 to 2008 database migration compatibility level I need to change 90 to 100?? if I’m not change what was the impact.

A:
If you do not update the database compatibility level you will not be able to use any functionality on the SQL 2005 version databases that is new in SQL 2008.

Q:
What are replication jobs will create in transactional replication.

A:
You will have snapshot, distribution and log reader agents created for your publications

Q:
How to check no of scribers in SQL server instance. In my case I’m having n – number of subscribers. Can you please guide me best approach.

A:
You can query the distribution database to identify the publications, articles, subscribers etc which participate in your replication setup.

An example query below:

SELECT   p.Publication, 
a.article AS Article,
a.publisher_db AS Publisher,
a.source_object AS PublishedObject,
s.subscriber_db AS Subscriber,
a.destination_object AS SubscriberObject
FROM Distribution..msarticles a
JOIN Distribution..mssubscriptions s ON a.publication_ID = s.publication_ID
JOIN Distribution..mspublications p ON s.publication_ID = p.publication_ID
where s.subscriber_db<>'virtual'
GROUP BY a.article, a.publisher_db, s.subscriber_db, p.Publication, a.source_object, a.destination_object
ORDER BY a.article





MCITP SQL 2005, MCSA SQL 2012
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