Swap into file

In this example, we will create and activate 1G of swap. To create a bigger swap, replace 1G with the size of the desired swap space.
First create a file which will be used for swap:
sudo fallocate -l 1G /swapfile
If fallocate is not installed or you get an error message saying fallocate failed: Operation not supported you can use the following command to create the swap file:
sudo dd if=/dev/zero of=/swapfile bs=1024 count=1048576
Only the root user should be able to read and write to the swap file. Issue the command below to set the correct permissions :
sudo chmod 600 /swapfile
Use the mkswap tool to set up a Linux swap area on the file:
sudo mkswap /swapfile
Activate the swap file:
sudo swapon /swapfile
To make the change permanent open the /etc/fstab file:
sudo nano /etc/fstab
and paste the following line:
/swapfile swap swap defaults 0 0
Verify whether the swap is active using either the swapon or free command as shown below:
sudo free -h
sudo swapon --show
NAME      TYPE  SIZE   USED PRIO
/swapfile file 1024M 507.4M   -1Copy

sudo fallocate -l 1G /swapfile

sudo chmod 600 /swapfile

sudo mkswap /swapfile

sudo swapon /swapfile

mcedit /etc/fstab

/swapfile  none            swap    sw              0       0

Windows Server 2012 RDS deployment “The server has reboots pending and needs to be restarted.”

Solution #1
Reboot the server
Open Command Prompt then type “shutdown /r” and wait for the server to reboot.
Retry deployment, if the deployment fails, move to Solution #2
Solution #2
This solution requires editing the registry of the Windows 2012 Server.
Run “regedit” to open the Registry Editor
Navigate to: “HKLM\System\CurrentControlSet\Control\Session Manager
If PendingFileRenameOperations exists,  DELETE the key and reboot the server.
After reboot, you will be able to finish the deployment.

AttachAllDatabasesInDIR

 #------------------------------------------------------------------------------------------------------ 
# Name:            Attach-AllDatabasesInDir 
# Description:     This script will attach all the databases in a directory to the local SQL Instance 
# Usage:        Run the function with the -DatabaseDir parameter 
# By:             Ivan Josipovic, softlanding.ca 
#------------------------------------------------------------------------------------------------------ 
#Do not modify below here 
 
function Attach-AllDatabasesInDir{ 
param( 
[string]$DatabaseDir = $(throw "-DatabaseDir `"C:\ExampleDir`" is required.") 
) 
#Load the SQL Assembly 
[System.Reflection.Assembly]::LoadWithPartialName('Microsoft.SqlServer.Smo') | out-null 
#Connect to the local SQL Server Instance, change the (local) parameter if needed 
$server = new-Object Microsoft.SqlServer.Management.Smo.Server("(local)") 
if ($server -eq $null){ 
    Write-host -foreground red "Unable to connect to the SQL Server" 
    return -1 
} 
$items = get-childitem $DatabaseDir *.mdf 
 
foreach ($item in $items){ 
    [bool]$ErrorExists = $false 
    $Item.name 
 
    try    { 
        $DBName = $server.DetachedDatabaseInfo($($item.fullname)).rows[0].value 
    }  
    catch { 
        Write-host -foregroundcolor red "File was not able to be read. It is most likely already mounted or in use by another application" 
        $ErrorExists = $true 
    } 
 
    if ($ErrorExists -eq $false){ 
        foreach ($db in $server.databases){ 
            if ($db.name.Equals($DBName)){ 
                write-host -foreground red "This database already exists on the server" 
                $ErrorExists = $true 
            } 
        } 
        if ($ErrorExists -eq $false){ 
            $DbLocation = new-object System.Collections.Specialized.StringCollection 
            $DbLocation.Add($item.fullname) 
            $attach = $server.AttachDatabase($DBName, $DbLocation) 
        } 
    } 
} 
return 
} 
#------------------------------------------------------------------------------------------------------ 
 
Attach-AllDatabasesInDir -DatabaseDir "E:\MSSQL\DATA"

SQL shrink logfiles

DECLARE @dbname VARCHAR(50)

DECLARE @fname VARCHAR(50)

DECLARE @dbid tinyint

DECLARE @lsize numeric(10,5)

DECLARE @TSQLExec VARCHAR (MAX) = '';

declare  db_cur cursor for

SELECT 

    db.name DBName, fs.name FName, db.database_id,

    fs.SIZE * 8.0 / 1024 LogFileSizeMB

FROM sys.databases db

left join sys.master_files fs on fs.database_id = db.database_id

WHERE db.database_id > 4 and db.state=0 and fs.type=1 and db.is_read_only=0

open db_cur

FETCH NEXT FROM db_cur  INTO @dbname , @fname, @dbid ,@lsize

WHILE @@FETCH_STATUS = 0  

BEGIN  

      set @TSQLExec = concat('use [', @dbname,'];CHECKPOINT;','dbcc shrinkfile(N''',@fname,''',64) with no_infomsgs;'); --, Char (13),Char (10)

  set @TSQLExec = concat(@TSQLExec,'ALTER DATABASE [',@dbname,'] MODIFY FILE ( NAME = N''',@fname,''', FILEGROWTH = 64MB, MAXSIZE = UNLIMITED );');

  --set @TSQLExec = concat(@TSQLExec,'ALTER DATABASE [',@dbname,'] MODIFY FILE ( NAME = N''',@fname,''', SIZE = 16MB);');

  

  print @TSQLExec;

  --EXEC (@TSQLExec);

      FETCH NEXT FROM db_cur  INTO @dbname , @fname, @dbid ,@lsize

END 

close db_cur

deallocate db_cur