Blackberry NEWS FEEDS - RELEASE NOTES 1.0 Información técnica descargar pdf (Pagina 29)

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Chapter 5: Known Issues 29

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For Periodic Replication: You may experience delays when applying replication data

depending on the data size and number of files to apply, because the process

assures data consistency. You can set the parameter, KeepUndoForPeriodic, to false

to halt generation of the undo file and speed up the application of aggregated

changes, but should not do so for database scenarios. This parameter is in the

ws_rep.cfg file.

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For Network Traffic Redirection: After a switchover takes place, the A-records of

Master and Replica servers are changed on the DNS server, depending on which

Network Redirection Methods you select. The following table shows what network

redirection methods impact the DNS A-record.

– If the Network Redirection method is Move IP, the DNS A-record is not

impacted.

– If the Network Redirection is DNS redirection, the A-record Master redirects to

the Replica IP after switchover, while the Replica A-record doesn't change.

– If the Network Redirection is Switch Computer Name, the Master A-record

changes to Master-xo after switchover, and the Replica A-record changes to

Master.

– If the network redirections are DNS redirection and switch computer name, the

result is same as only DNS redirection.

– If you want to keep the Replica A-Record, use the DNS Redirection method or

DNS and Switch Computer Name methods.

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For CA ARCserve Backup and CA ARCserve RHA integration: When restoring a SQL

database on the Master with CA ARCserve Backup, you may receive a "Windows

could not start the SQL Server" error if running SQL Server 2008. (This error does

not affect SQL Server 2005 restore jobs.) This error is caused by the Network

Service or Local Service accounts, which do not have access rights to the SQL log file

on the Master. There are three ways to avoid this issue:

– In CA ARCserve RHA, set the scenario Replicate ACL option to On. Doing so

guarantees that all ACL information for the Master SQL data directories are

retained after recovery, allowing the SQL service to operate.

– In CA ARCserve Backup, manually add the following user account after recovery

to the ACL of the SQL data directories on the Master:

SQLServerMSSQLUser$Computer Name$Instance Name

– In CA ARCserve Backup disable the following restore option to NOT overwrite

the ACL of the SQL data folders on the Master after restore: CA ARCserve

Backup Manager, Global Options, Operation. Click to enable or disable the

option, Restore and Preserve File Attributes and Security Information. Checking

this option overwrites the ACL. Clearing the option does NOT overwrite the

ACL.

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