SQL Server 2008 Database Discovery

Microsoft.SQLServer.2008.DBDiscovery (DataSourceModuleType)

This module type is used to discover instances of Microsoft SQL Server 2008 Databases. The module connects to SQL Server and discovers all databases together with properties.

Element properties:

TypeDataSourceModuleType
IsolationAny
AccessibilityInternal
RunAsMicrosoft.SQLServer.SQLDiscoveryAccount
OutputTypeSystem.Discovery.Data

Member Modules:

ID Module Type TypeId RunAs 
DS DataSource Microsoft.Windows.TimedScript.DiscoveryProvider Default

Overrideable Parameters:

IDParameterTypeSelectorDisplay NameDescription
IntervalSecondsint$Config/IntervalSeconds$Interval (sec)The polling interval in seconds that discovery will run on.
SyncTimestring$Config/SyncTime$Synchronization TimeTime at which to do initial discovery
ExcludeListstring$Config/ExcludeList$Exclude ListA comma-separated list of database instances that should be excluded from discovery. You can use the wildcard * to exclude all instances.
TimeoutSecondsint$Config/TimeoutSeconds$Timeout (sec)

Source Code:

<DataSourceModuleType ID="Microsoft.SQLServer.2008.DBDiscovery" Accessibility="Internal" RunAs="SQL!Microsoft.SQLServer.SQLDiscoveryAccount">
<Configuration>
<xsd:element name="IntervalSeconds" type="xsd:integer"/>
<xsd:element name="SyncTime" type="xsd:string"/>
<xsd:element name="ComputerID" type="xsd:string"/>
<xsd:element name="ComputerName" type="xsd:string"/>
<xsd:element name="SQLConnectionString" type="xsd:string"/>
<xsd:element name="SQLInstanceName" type="xsd:string"/>
<xsd:element name="ExcludeList" type="xsd:string"/>
<xsd:element name="TimeoutSeconds" type="xsd:int"/>
</Configuration>
<OverrideableParameters>
<OverrideableParameter ID="IntervalSeconds" ParameterType="int" Selector="$Config/IntervalSeconds$"/>
<OverrideableParameter ID="SyncTime" ParameterType="string" Selector="$Config/SyncTime$"/>
<OverrideableParameter ID="ExcludeList" ParameterType="string" Selector="$Config/ExcludeList$"/>
<OverrideableParameter ID="TimeoutSeconds" ParameterType="int" Selector="$Config/TimeoutSeconds$"/>
</OverrideableParameters>
<ModuleImplementation>
<Composite>
<MemberModules>
<DataSource ID="DS" TypeID="Windows!Microsoft.Windows.TimedScript.DiscoveryProvider">
<IntervalSeconds>$Config/IntervalSeconds$</IntervalSeconds>
<SyncTime>$Config/SyncTime$</SyncTime>
<ScriptName>DiscoverSQL2008DB.vbs</ScriptName>
<Arguments>$MPElement$ $Target/Id$ $Config/ComputerID$ $Config/ComputerName$ $Config/SQLConnectionString$ $Config/SQLInstanceName$ "Exclude:$Config/ExcludeList$"</Arguments>
<ScriptBody><Script>
' ##### ..\Scripts\Common\Initialize.vbs
Option Explicit
SetLocale("en-us")

Function Quit()
WScript.Quit()
End Function

Function IsValidObject(ByVal oObject)
IsValidObject = False

If IsObject(oObject) Then
If Not oObject Is Nothing Then
IsValidObject = True
End If
End If
End Function

Function MomCreateObject(ByVal sProgramId)
Dim oError
Set oError = New Error

On Error Resume Next
Set MomCreateObject = CreateObject(sProgramId)
oError.Save
On Error GoTo 0

If oError.Number &lt;&gt; 0 Then ThrowScriptError "Unable to create automation object '" &amp; sProgramId &amp; "'", oError
End Function
' ##### Scripts\SQL2008Constants.vbs
Const SQL_VERSION = "2008"
Const SQL_VERSION_NUMBER = "10"
Const SQL_WMI_NAMESPACE = "ComputerManagement10"

Const SQL_FULLTEXTSEARCH_SERVICENAME = "MSSQLFDLauncher"
Const SQL_FULLTEXTSEARCH_SERVICECLUSTERNAME = "SQL Full-text Filter Daemon Launcher"

Const SQL_DBENGINE_CLASS = "$MPElement[Name='Microsoft.SQLServer.2008.DBEngine']$"
Const SQL_DATABASE_CLASS = "$MPElement[Name='Microsoft.SQLServer.2008.Database']$"
Const SQL_AGENTJOB_CLASS = "$MPElement[Name='Microsoft.SQLServer.2008.AgentJob']$"
Const SQL_REPLICATION_DISTRIBUTOR_CLASS = "$MPElement[Name='Microsoft.SQLServer.2008.Distributor']$"
Const SQL_DISTRIBUTOR_CONTAINS_DATABASE_RELATIONSHIP = "$MPElement[Name='Microsoft.SQLServer.2008.DistributorContainsDatabase']$"
Const SQL_REPLICATION_PUBLISHER_CLASS = "$MPElement[Name='Microsoft.SQLServer.2008.Publisher']$"
Const SQL_REPLICATION_SUBSCRIBER_CLASS = "$MPElement[Name='Microsoft.SQLServer.2008.Subscriber']$"
Const SQL_REPLICATION_PUBLICATION_CLASS = "$MPElement[Name='Microsoft.SQLServer.2008.Publication']$"
Const SQL_REPLICATION_SUBSCRIPTION_CLASS = "$MPElement[Name='Microsoft.SQLServer.2008.Subscription']$"
' ##### ..\Scripts\Common\Error.vbs
Class Error
Private m_lNumber
Private m_sSource
Private m_sDescription
Private m_sHelpContext
Private m_sHelpFile

Public Sub Save()
m_lNumber = Err.Number
m_sSource = Err.Source
m_sDescription = Err.Description
m_sHelpContext = Err.HelpContext
m_sHelpFile = Err.HelpFile
End Sub

Public Sub Raise()
Err.Raise m_lNumber, m_sSource, m_sDescription, m_sHelpFile, m_sHelpContext
End Sub

Public Sub Clear()
m_lNumber = 0
m_sSource = ""
m_sDescription = ""
m_sHelpContext = ""
m_sHelpFile = ""
End Sub

Public Default Property Get Number()
Number = m_lNumber
End Property
Public Property Get Source()
Source = m_sSource
End Property
Public Property Get Description()
Description = m_sDescription
End Property
Public Property Get HelpContext()
HelpContext = m_sHelpContext
End Property
Public Property Get HelpFile()
HelpFile = m_sHelpFile
End Property
End Class

Function ThrowScriptErrorNoAbort(ByVal sMessage, ByVal oErr)
On Error Resume Next
Dim oAPITemp
Set oAPITemp = MOMCreateObject("MOM.ScriptAPI")
oAPITemp.LogScriptEvent WScript.ScriptName, 4001, 1, sMessage &amp; ". " &amp; oErr.Description
End Function

Function ThrowScriptError(Byval sMessage, ByVal oErr)
On Error Resume Next
ThrowScriptErrorNoAbort sMessage, oErr
Quit()
End Function

Sub HandleError(customMessage)
Dim localLogger
If Not (Err.number = 0) Then
Set localLogger = new ScriptLogger
localLogger.LogFormattedError(customMessage)
Wscript.Quit 0
End If
End Sub

Function HandleErrorContinue(customMessage)
Dim localLogger
HandleErrorContinue = False
If Not (Err.number = 0) Then
Set localLogger = new ScriptLogger
localLogger.LogFormattedError(customMessage)
Err.Clear
HandleErrorContinue = True
End If
End Function


' ##### ..\Scripts\Common\Discovery\SQLDatabaseDiscovery.vbs
'Copyright (c) Microsoft Corporation. All rights reserved.
' Parameters that should be passed to this script
' Parameters that should be passed to this script
' 0 MPElement ID ($MPElement$)
' 1 Target Id for ME this rule is running against ($Target/Id$)
' 2 Computer ID
' 3 Computer FQDN
' 4 SQL Connection String for the instance that the DBs are being discovered on
' 5 SQL Instance that this rule is being run for
' 6 Exlcuded database list (prefixed with Exclude:)

Const SQL_DISCOVERY_CONNECT_FAILURE = -1
Const SQL_DISCOVERY_QUERY_FAILURE = -2
Const SQL_DISCOVERY_SUCCESS = 0
Const ERR_CANNOT_INSERT_NULL = 515
Const EVENT_TYPE_ERROR = 1


Dim MAX_INT_VALUE
MAX_INT_VALUE = (2^31)-1

Dim oArgs
Set oArgs = WScript.Arguments
if oArgs.Count &lt;&gt; 7 Then
Wscript.Quit -1
End If

Dim SourceID, ManagedEntityId, TargetComputer, InstanceName, ConnectionString, TargetComputerID, ExcludeList

SourceId = oArgs(0)
ManagedEntityId = oArgs(1)
TargetComputerID = oArgs(2)
TargetComputer = oArgs(3)
ConnectionString = oArgs(4)
InstanceName = oArgs(5)
ExcludeList = Mid(oArgs(6), 9)


Dim oAPI, oSQLDiscoveryData

Set oAPI = MOMCreateObject("MOM.ScriptAPI")
set oSQLDiscoveryData = oAPI.CreateDiscoveryData(0, SourceId, ManagedEntityId)

If DoDatabaseDiscovery(InstanceName, ConnectionString, oSQLDiscoveryData) &gt;= 0 Then
StoreExcludeDatabaseListToRegistry InstanceName, ExcludeList
oAPI.LogScriptEvent "DatabaseDiscovery:" &amp; InstanceName, 4001, 4, "Database for SQL instance '" + InstanceName + "' discovers successfully."
Else
oSQLDiscoveryData.IsSnapshot = False
End If
Call oAPI.Return(oSQLDiscoveryData)
WScript.Quit()

' This function should be used to escape Connection String keywords.
Function EscapeConnStringValue (ByVal strValue)
ON ERROR RESUME NEXT
Err.Clear

EscapeConnStringValue = "{" + Replace(strValue, "}", "}}") + "}"
End Function

' This function should be used to escape Database Name parameter
Function EscapeDBName (ByVal strValue)
ON ERROR RESUME NEXT
Err.Clear
EscapeDBName = Replace(strValue, "]", "]]")
End Function

Sub WriteToEventLogAndExit(ByVal message)
oAPI.LogScriptEvent WScript.ScriptName, 4002, EVENT_TYPE_ERROR, message

WScript.Quit()
End Sub

Function DoDatabaseDiscovery(ByVal sSqlInstance, ByVal sSQLConnectionString, ByVal oDisc)

If Len(ExcludeList) &lt; 0 Then
WriteToEventLogAndExit("Database exclusion list invalid in DBDiscovery. Aborting discovery.")
End If

Dim e
Set e = New Error

Dim cnADOConnection
Set cnADOConnection = MomCreateObject("ADODB.Connection")
cnADOConnection.Provider = "sqloledb"
cnADOConnection.ConnectionTimeout = 30

Dim strProv
strProv = "Server=" &amp; EscapeConnStringValue(sSQLConnectionString) &amp; ";Database=master;Trusted_Connection=yes"

e.Clear
On Error Resume Next
cnADOConnection.Open strProv
e.Save
On Error Goto 0
If e.Number &lt;&gt; 0 Then
'Error event in here
'g_oSQL.CreateConnectionFailureAlert sInstance, Err.number, Err.Description
DoDatabaseDiscovery = SQL_DISCOVERY_CONNECT_FAILURE
Exit Function
End If

Dim oResults
e.Clear
On Error Resume Next
' query for the list of databases which are not database snapshots
Set oResults = cnADOConnection.Execute("SELECT name, state_desc FROM sys.databases WHERE source_database_id IS NULL")
e.Save
On Error Goto 0
If e.Number &lt;&gt; 0 Then
' Will eventually drop some events here once script API supports
' g_oSQL.CreateAlert ALERT_WARNING, _
' SCRIPT_NAME &amp; " (" &amp; sSQLServerInstance &amp; ")", _
' "Could not execute sp_databases on SQL Server Instance: " &amp; sSQLServerInstance &amp; ". Error number: " &amp; e.Number &amp; ", Error Information: " &amp; e.Description, _
' "", _
' ""
DoDatabaseDiscovery = SQL_DISCOVERY_QUERY_FAILURE
Exit Function
End If

Dim iDBRow, iRow, sFileType
Dim iPos, iPos2, iTemp, bDBAuto, bLogAuto
Dim oDBResults, oDBInstance, sDBSize, sDBStatus
Dim sDBName, sDBState
Dim dDBSize, dLogSize
Dim sDBOwner

Do While Not oResults.EOF
sDBName = oResults(0)
sDBState = oResults(1)

If Not(IsExcluded(SDBName)) Then
Set oDBInstance = oSQLDiscoveryData.CreateClassInstance(SQL_DATABASE_CLASS)
' Set basic DB properties
With oDBInstance
.AddProperty "$MPElement[Name='Windows!Microsoft.Windows.Computer']/PrincipalName$", TargetComputerID
.AddProperty "$MPElement[Name='SQL!Microsoft.SQLServer.ServerRole']/InstanceName$", sSqlInstance
.AddProperty "$MPElement[Name='SQL!Microsoft.SQLServer.Database']/DatabaseName$", sDBName
End With

' Only do further discovery for DB that is online - sp_helpdb wont return state for offline databases
' To do - may want to add owner, created, dbid and compat level to discovery, collation etc.


If sDBState = "ONLINE" Then
On Error Resume Next
Set oDBResults = cnADOConnection.Execute("sp_helpdb [" &amp; EscapeDBName(sDBName) &amp; "]")
e.Save
On Error Goto 0
Select Case e.Number

Case 0
On Error Resume Next
sDBSize = Trim(oDBResults(1))
e.Save
On Error Goto 0
If e.Number = 0 Then
sDBSize = Trim(oDBResults(1))
sDBStatus = Split(oDBResults(5),",")
sDBOwner = oDBResults(2)

Set oDBResults = oDBResults.NextRecordset
bDBAuto = false
bLogAuto = false

dDBSize = 0
dLogSize = 0

Do While Not oDBResults.EOF
sFileType = oDBResults(7)

If LCase(sFileType) = "data only" Then
If (Trim(oDBResults(6)) &lt;&gt; "0%") And (Trim(oDBResults(6)) &lt;&gt; "0 KB") Then
bDBAuto = true
End If
End If
If LCase(sFileType) = "log only" Then
If (Trim(oDBResults(6)) &lt;&gt; "0%") And (Trim(oDBResults(6)) &lt;&gt; "0 KB") Then
bLogAuto = true
End If
End If
oDBResults.MoveNext
Loop

With oDBInstance
.AddProperty "$MPElement[Name='SQL!Microsoft.SQLServer.Database']/RecoveryModel$", Split(sDBStatus(3),"=")(1)
.AddProperty "$MPElement[Name='SQL!Microsoft.SQLServer.Database']/Updateability$", Split(sDBStatus(1),"=")(1)
.AddProperty "$MPElement[Name='SQL!Microsoft.SQLServer.Database']/UserAccess$", Split(sDBStatus(2),"=")(1)
.AddProperty "$MPElement[Name='SQL!Microsoft.SQLServer.Database']/Collation$", Split(sDBStatus(5),"=")(1)
.AddProperty "$MPElement[Name='SQL!Microsoft.SQLServer.Database']/DatabaseAutogrow$", CStr(bDBAuto)
.AddProperty "$MPElement[Name='SQL!Microsoft.SQLServer.Database']/LogAutogrow$", CStr(bLogAuto)
If Not(IsNull(sDBOwner)) Then
.AddProperty "$MPElement[Name='SQL!Microsoft.SQLServer.Database']/Owner$", sDBOwner
End If
End With
End If


Case ERR_CANNOT_INSERT_NULL
' Throw error to event log in here
' Error text will be "The system stored procedure sp_helpdb, which is used to gather information about the databases, has returned an error that may indicate that it cannot determine the db owner for the database [" &amp; strDBName &amp; ']. Here are the details: sp_helpdb @dbName='" &amp; strDBName &amp; "' on SQL Server Instance: " &amp; strSQLServerInstanceName &amp; ". Error number: " &amp; e.Number &amp; ", Error Information: " &amp; e.Description, _


Case Else
' Throw error to event log in here
' Error text will be "Could not execute sp_helpdb @dbname=N'" &amp; Replace(strDBName, "'", "''") &amp; "' on SQL Server Instance: " &amp; strSQLServerInstanceName &amp; ". Error number: " &amp; e.Number &amp; ", Error Information: " &amp; e.Description, _


End Select
Set oDBResults = nothing
End If


' Add DB to the Instance List and move to next DB
call oSQLDiscoveryData.AddInstance(oDBInstance)
End If
oResults.MoveNext

Loop

Set oResults = nothing
cnADOConnection.Close
DoDatabaseDiscovery = SQL_DISCOVERY_SUCCESS

End Function


Function ConvertSizeStringToNumber(sSizeString)
' Remove the KB and return a valid double
sSizeString = Replace(sSizeString, " KB", "")
ConvertSizeStringToNumber = CDbl(sSizeString)
End Function

Function IsExcluded (sDatabase)

Dim aExcludes
Dim match
Dim i

match = false
If Trim(ExcludeList) = "*" Then
match = true
Else
aExcludes = Split(ExcludeList, ",")
For i = 0 To UBound(aExcludes)
If LCase(sDatabase) = LCase(Trim(aExcludes(i))) Then
match = true
End If
Next
End If
IsExcluded = match

End Function


Function StoreExcludeDatabaseListToRegistry(instanceName, ExcludeList)
Dim regKey
Dim oError
Set oError = New Error

On Error Resume Next
regKey = oAPI.GetScriptStateKeyPath("$Target/ManagementGroup/Id$")
regKey = "HKEY_LOCAL_MACHINE\" + regKey + "\" + instanceName + "\DatabaseExcludeList"
oError.Save
On Error Goto 0
If oError.Number &lt;&gt; 0 Then ThrowScriptError "Unable to get database exclude list registry key", oError

Dim wShell
Set wShell = MOMCreateObject("WScript.Shell")

On Error Resume Next
wShell.RegWrite regKey, ExcludeList
oError.Save
On Error Goto 0

If oError.Number &lt;&gt; 0 Then ThrowScriptError "Unable to save database exclude list to registry ", oError
End Function


</Script></ScriptBody>
<TimeoutSeconds>$Config/TimeoutSeconds$</TimeoutSeconds>
</DataSource>
</MemberModules>
<Composition>
<Node ID="DS"/>
</Composition>
</Composite>
</ModuleImplementation>
<OutputType>System!System.Discovery.Data</OutputType>
</DataSourceModuleType>