MS Access（ADODB连接）慢.Close（）

Question

Newb问题：我正在开发一个PowerShell脚本，用于存储它的工作数据＆＃34;使用概述in this blog post.

的方法在本地MS Access数据库文件中

一切似乎都在运行，但是当向数据库文件中添加大约500条记录时，后续的$ connection.Close（）命令需要超过20秒才能完成。

这是正常的吗？提前谢谢！

编辑 - 以下相关代码：

# setup & open the internal database
$dbCursor = 3
$dbLock = 3
$connection = New-Object -com "ADODB.Connection"
$connectionString = "Provider=Microsoft.ACE.OLEDB.12.0;Data Source=$PSScriptRoot\masterdb.accdb;Persist Security Info=True;"
$recordSet = New-Object -com "ADODB.Recordset"
$connection.Open($connectionString)
$recordSet.Open("SELECT * FROM STUDENTS", $connection, $dbCursor, $dbLock)

# presence check arrays
$dbArray = @()

# import the CSV file
$csvFile = Import-Csv -path "$PSScriptRoot\$cognosDownload"

# populate dbArray from database
$recordSet.MoveFirst()
do {
    $dbArray += $recordSet.Fields.Item("SID").Value;
    $recordSet.MoveNext()
} until ($recordSet.EOF -eq $True)

# add new records from CSV to database file
foreach($csvLine in $csvFile)
{
    # if CSV record is for a new student, add student to database.
    if ($dbArray -notcontains $csvLine.SID)
    {
        $recordSet.AddNew()
        $recordSet.Fields.Item("SID").value = $csvLine.SID
        $recordSet.Fields.Item("lastName").value = $csvLine.lastName
        $recordSet.Fields.Item("firstName").value = $csvLine.firstName
        $recordSet.Fields.Item("grade").value = $csvLine.grade
        $recordSet.Fields.Item("username").value = Format-Username $csvLine.firstName $csvLine.lastName
        $recordSet.Fields.Item("password").value = New-Password
        $recordSet.Fields.Item("status").value = "A"
        $recordSet.Update()
    }
}

# remove (rather large) arrays from memory
Remove-Variable dbArray

#close it all up
$recordSet.Close()
$connection.Close()