使用PowerShell备份SQL数据库时出错

Question

我正在尝试备份SQL数据库，但奇怪的是占用空间，我可以用powershell备份的数据库很少，但很少我收到错误

Exception calling "SqlBackup" with "1" argument(s): "Backup failed for Server 
'Server1'. "
At C:\_Scripts\defaultbackup.ps1:40 char:1
+ $smoBackup.SqlBackup($server)
+ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ CategoryInfo          : NotSpecified: (:) [], MethodInvocationException
+ FullyQualifiedErrorId : FailedOperationException

$dbToBackup = "test"



#clear screen
cls

#load assemblies
#note need to load SqlServer.SmoExtended to use SMO backup in SQL Server 2008
#otherwise may get this error
#Cannot find type [Microsoft.SqlServer.Management.Smo.Backup]: make sure
#the assembly containing this type is loaded.

[System.Reflection.Assembly]::LoadWithPartialName("Microsoft.SqlServer.SMO") | Out-Null
[System.Reflection.Assembly]::LoadWithPartialName("Microsoft.SqlServer.SmoExtended") | 
Out-Null
[System.Reflection.Assembly]::LoadWithPartialName("Microsoft.SqlServer.ConnectionInfo") 
| Out-Null
[System.Reflection.Assembly]::LoadWithPartialName("Microsoft.SqlServer.SmoEnum") | Out-  
Null

#create a new server object
$server = New-Object ("Microsoft.SqlServer.Management.Smo.Server") "(local)"
$backupDirectory = $server.Settings.BackupDirectory
"Default Backup Directory: " + $backupDirectory
$db = $server.Databases[$dbToBackup]
 $dbName = $db.Name

 $timestamp = Get-Date -format yyyyMMddHHmmss
$smoBackup = New-Object ("Microsoft.SqlServer.Management.Smo.Backup")

#BackupActionType specifies the type of backup.
#Options are Database, Files, Log
#This belongs in Microsoft.SqlServer.SmoExtended assembly

$smoBackup.Action = "Database"
$smoBackup.BackupSetDescription = "Full Backup of " + $dbName
$smoBackup.BackupSetName = $dbName + " Backup"
$smoBackup.Database = $dbName
$smoBackup.MediaDescription = "Disk"

$smoBackup.Devices.AddDevice($backupDirectory + "\" + $dbName + "_" + $timestamp +   
".bak",   
"File")

$smoBackup.SqlBackup($server)

#let's confirm, let's list list all backup files
$directory = Get-ChildItem $backupDirectory

$ smoBackup.Devices.AddDevice（$ backupDirectory +＆＃34; \＆＃34; + $ dbName +＆＃34; _＆＃34; + $ timestamp +＆＃34; .bak＆＃34;，＆＃ 34;文件＆＃34）

$ smoBackup.SqlBackup（$服务器）

让我们确认，让我们的列表列出所有备份文件

$ directory = Get-ChildItem $ backupDirectory

仅列出以.bak结尾的文件，假设这是所有备份文件的约定

$backupFilesList = $directory | where {$_.extension -eq ".bak"}
$backupFilesList | Format-Table Name, LastWriteTime
$backupFilesList = $directory | where {$_.extension -eq ".bak"}
$backupFilesList | Format-Table Name, LastWriteTime

Answer 1

将

$server = New-Object ("Microsoft.SqlServer.Management.Smo.Server") "(local)"

替换为

$srv = New-Object ("Microsoft.SqlServer.Management.Smo.Server") "(local)"
$conContext = $srv.ConnectionContext
$conContext.LoginSecure = $True
$conContext.ConnectTimeout = 0
$server = new-object Microsoft.SqlServer.Management.Smo.Server($conContext)

Answer 2

由于你可以备份少数几个失败，似乎脚本很好。为什么不添加异常处理以捕获确切的错误。 您可能需要修改代码，如下所示

Try
{
    $smoBackup.SqlBackup($server
}
Catch
{
    Write-Output $_.Exception.InnerException
}