0

I have this issue when i migrated web application to another on the same farm

"

Mount-SPContentDatabase : The attach operation cannot continue because another

object in this farm already contains the same ID. Each object in a farm must

have a unique ID. In order to proceed with the attach operation you must

assign a new ID to this database. To attach this database with a new ID, use

the Mount-SPContentDatabase command with the -AssignNewDatabaseId parameter.

Note that if this new database and an existing database contain the same site

collections, attaching this database will likely result in orphaned site

collections due to conflicts between the two databases.

At line:1 char:1

  • Mount-SPContentDatabase

WSS_Content_PWAProduction_59add0f0f7a54122830179d5a7c2cf ...

  • ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

~~~

+ CategoryInfo          : InvalidData: (Microsoft.Share...ContentDatabase:

SPCmdletMountContentDatabase) [Mount-SPContentDatabase], SPException

+ FullyQualifiedErrorId : Microsoft.SharePoint.PowerShell.SPCmdletMountCon

tentDatabase "

when i use -assighnednewdatabaseid , i had 0 site collection and the site collection didn't migrate

is there any solution to this problem

0

this is expected behavior. You cannot restore/make a copy, a same content DB in the same farm. database ID and site Collection ID stores in the Config db.

In this situation, i would recommend this( i did this just 3 days ago).

  • take the backup of Site collection( not the content DB)
  • create a new content DB in the 2nd web application.
  • Now restore the Site collection in that web application.

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