升级前

重要提示：

如果您使用 Active Directory (AD) 并计划升级到 2023.4.0，我们强烈建议您直接跳到 2023.4.3 版本，因为 2023.4.0、2023.4.1 和 2023.4.2 会受到 AD 问题的影响。

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，以确保执行不中断。

   这些 是您目前在传统文件夹删除流程中可以预期的更改。