升级前

请务必在升级到 2023.4+ 之前执行这些步骤。它们有助于确保在升级完成后，您可以立即开始使用，且不会有问题。

1. 备份数据库以消除任何数据丢失风险。
2. 运行下面的升级前数据库维护脚本。

此脚本会从数据库中删除所有过期或已使用的授权。 这有助于加快 [identity].[PersistedGrants] 主键和索引的重新创建，从而加快数据库迁移。

DECLARE @Now DATETIME2 = GETUTCDATE()
DECLARE @ConsumedGrantsGracePeriod DATETIME2 = DATEADD(hour, -2, @Now)

DECLARE @ConsumedDeleted int = 1
DECLARE @ExpiredDeleted int = 1
DECLARE @BatchSize int = 500
DECLARE @ConsumedBatchesDeleted int = 0
DECLARE @ExpiredBatchesDeleted int = 0

SET LOCK_TIMEOUT 0
SET DEADLOCK_PRIORITY LOW

WHILE (@ConsumedDeleted=1 OR @ExpiredDeleted=1)
BEGIN

  IF @ConsumedDeleted=1
  BEGIN
    BEGIN TRY
      DELETE TOP(@BatchSize) FROM [identity].[PersistedGrants] WHERE [ConsumedTime] IS NOT NULL AND [ConsumedTime] < @ConsumedGrantsGracePeriod AND [Type] <> 'reference_token'
      IF @@ROWCOUNT = 0
        SET @ConsumedDeleted=0
      ELSE
        SET @ConsumedBatchesDeleted = @ConsumedBatchesDeleted + 1
    END TRY
    BEGIN CATCH
      PRINT 'Failed to delete consumed grants'
    END CATCH
  END

  IF @ExpiredDeleted=1
  BEGIN
    BEGIN TRY
      DELETE TOP(@BatchSize) FROM [identity].[PersistedGrants] WHERE [Expiration] < @Now AND [Type] <> 'reference_token'
      IF @@ROWCOUNT = 0
        SET @ExpiredDeleted=0
      ELSE
        SET @ExpiredBatchesDeleted = @ExpiredBatchesDeleted + 1
    END TRY
    BEGIN CATCH
      PRINT 'Failed to delete expired grants'
    END CATCH
  END

  PRINT 'Consumed batches deleted: ' + CONVERT(nvarchar(32), @ConsumedBatchesDeleted)
  PRINT 'Expired batches deleted: ' + CONVERT(nvarchar(32), @ExpiredBatchesDeleted)

  -- Wait for 10 seconds between deletes
  IF (@ExpiredDeleted=1 OR @ConsumedDeleted=1)
    WAITFOR DELAY '00:00:05.000'

END

3. 将传统文件夹迁移到新式文件夹，以确保不间断执行。这些是您在传统文件夹删除流程中此时可以预期的更改。