List orphan user from the database

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Following is the query to list all the orphan users in a SQL Server database:

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The current master key cannot be decrypted

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We had the requirement to migrate our cluster to a different domain. We knew that Microsoft does not recommend to migrate the existing cluster to a different domain (Read http://support.microsoft.com/kb/269196 ). The business could not afford the time to build a new cluster in the target domain and move the databases to the SQL Server instance created on target cluster. We uninstalled the SQL server after backing up each database. Server team removed the nodes from the cluster and then moved each node to a new domain. We then installed the SQL Server and attached (since time was constraint) each databases back. All the databases were running fine and we could use them. We restored the master and msdb database so that all the logins, jobs and integration packages are back in place. Later while setting up distribution for replication we faced the first error: There is no remote user 'distributor_admin' mapped to local user '(null)' from the remote server 'repl_dist...
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Schema.Object has an unresolved reference to Schema

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If while building a database project face this error: Severity Code Description Project File Line Suppression State Error SQL71501: Function: [schema].[object] has an unresolved reference to Schema [schema]. DBProject.Database D:\TFS\path\DBProject.Database\schema\Functions\schema.object.sql Then this error might be because you have object definition referring to the schema under which they are supposed to be created but there is not script to create that schema. Suppose your schema name is empschema then you should add file smpschema.sql to the project with following code: CREATE SCHEMA empschema AUTHORIZATION dbo;
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There is insufficient memory available in the buffer pool

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Recently one of the developers sent me following error: Message: SQL Error [Microsoft OLE DB Provider for SQL Server: There is insufficient memory available in the buffer pool. SQL State: 42000    Native Error: 802 State: 20     Severity: 17 SQL Server Message: There is insufficient memory available in the buffer pool. I checked the memory usage by components under Memory Consumption server report. Following is the screenshot of the report: I found that CACHESTORE_SQLCP was allocated most memory. This type of memory clerk indicates memory consumption by plans of SQL statements or batches not found in any stored procedures, triggers or functions. I just wanted to clear pool for CACHESTORE_SQLCP. The name for this memory clerk is "SQL Plans". Which I found by querying sys.dm_os_memory_clerks dynamic management view. I then executed the following command to clear the pool for CACHESTORE_SQLCP. DBCC FREESYSTEMCACHE('SQL Plans') The memory a...
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