8/10/2019 Issues in Db Mirroring Log Shipping Clustering

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Replication:-

how u will add new articles without creating complete snapshot in existing setup ? What you will do if

latency is high ? how you will check and what you will check ? where you will check ? Replication errors

? replication agents failure ? distributor database unexpected growth ? Remove article from existing

replication without regenerating snapshot ?Replication error reason: OpenFileMapping() returned error2, 'The system cannot find the file specified.') (Microsoft SQL Server, Error: 22022 ? Replication peer-to-

peer conflict detection: Error 22815 ? Replication p2p conflict issue and resolve ? The process could not

execute 'sp_replcmds' on 'STA-SQL-15'. (Source: MSSQL_REPL, Error number: MSSQL_REPL20011 ? how

to use -SkipErrors parameter and why ? Administering Replication Agents , Skipping Errors in

Transactional Replication, sp_addpublication ? replication skip error ? CommitBatchSize &

CommitBatchThreshold changes and when and why ?

For Error Numbers and details :

http://technet.microsoft.com/en-us/library/ms152467.aspx

Logshipping : LSN mismatch in case if some has deleted the tlog file or else if anyone has taken manual

backup and placed some other place, network issues, drive issue, disk space issue , how you do a fail-

over ? Login issues after the failover. huge tlog size may take more time to get sync in case if rebuild

index job runs weekly, Manual failover etc...

Mirroring : add file in mirror database and principal database ? Install service pack on mirrored server ?

Automatic Vs Manual failover ? how u will sync logins in manual failover ? what will happen if u add one

file in principal DB in case of space issue and how you will fix this issue ( on both servers DB files are in

different locations ), what is the use of end point in database mirroring ? After manual force failover in

mirror database users were not able to connect the database, so what might be the issue ? Database

mirroring connection error 4 'An error occurred while receiving data: '64(The specified network name is

no longer available.) ? Msg 3174, Level 16, State 2, Line 1 The file 'XXXXX_log' cannot be moved by this

RESTORE operation. ? Orphaned Users with Database Mirroring ? Msg 1418, Level 16, State 1, Line 1 The

server network address "TCP://XXXXXXXX:50XX" can not be reached or does not exist. Check the

network address name and that the ports for the local and remote endpoints are operational.? Apply a

Service Pack or Patch Mirrored SQL Server instance ? How to Move the .LDF (Lof File ) file of the Mirror

Database ? and more ....

Clustering : If you know the concept and how it works, and what is the Node,instance, active active,

active passive, heartbeat, isalive, looksalive, failover, failback, how u will install service pack in 4 node

cluster ( Instance 1 = SP2 , Instance 2 = SP3 , Instance 3 = SP4 ), add nodes, offline online, online

pending, nodes not coming online after the failover, network issues, how to check cluster error log,

failover cluster manager, cluster admin, SAN, what will happen if SAN crashes in cluster ? is there any

support for hardware support in cluster ? is this hardware level or instance level and more... compare

with mirror, cluster and Always on (2012 ). can we install service pack on passive node on sql 2005

cluster, if yes how, is this possible ?

http://technet.microsoft.com/en-us/library/ms152467.aspxhttp://technet.microsoft.com/en-us/library/ms152467.aspxhttp://technet.microsoft.com/en-us/library/ms152467.aspx