SQL Server执行sp_changeobjectowner遇到"Msg 15001, Level 16,..."错误探究

在SQL Server中使用sp_changeobjectowner存储过程修改对象所有者（Owner）时，可能会遇到下面错误信息，当然对象klb.[k3]这个表确实是存在的。如下所示：

 

注意：个人测试环境为SQL Server 2014的标准版，如有不同情况，请以实际环境为准。

 

USE AdventureWorks2014;
GO
EXEC sp_changeobjectowner 'klb.k3', 'dbo';
GO

 

Msg 15001, Level 16, State 1, Procedure sp_changeobjectowner, Line 81

Object 'klb.[V_Test]' does not exist or is not a valid object for this operation.

 

 

 

 

当然你再次执行的话，可能会遇到同样的错误提示，但是Line的值有所变化，变成了99.  （这里是因为在脚本第二处抛出错误）

 

Msg 15001, Level 16, State 1, Procedure sp_changeobjectowner, Line 99

Object 'klb.[k3]' does not exist or is not a valid object for this operation.

 

 

我们获取sp_changeobjectowner存储过程的定义如下：

 

SET QUOTED_IDENTIFIER ON
SET ANSI_NULLS ON
GO
create procedure sys.sp_changeobjectowner
    @objname    nvarchar(776),        -- may be "[owner].[object]"
    @newowner    sysname                -- must be entry from sysusers
as
    Set nocount      on
    Set ansi_padding on
    declare    @objid        int,
            @newuid        int,
            @ret        int,
            @oldowner    sysname,
            @stmtS        nvarchar(4000)

    -- CHECK PERMISSIONS: Because changing owner changes both schema and
    --    permissions, the caller must be one of:
    -- (1) db_owner
    -- (2) db_ddladmin AND db_securityadmin
    if (is_member('db_owner') = 0) and
        (is_member('db_securityadmin') = 0 OR is_member('db_ddladmin') = 0)
    begin
        EXEC %%System().AuditEvent(ID = 1094864724, Success = 0, TargetLoginName = NULL, TargetUserName = @newowner, Role = NULL, Object = @objname, Provider = NULL, Server = NULL)
        raiserror(15247,-1,-1)
        return (1)
    end
    else
    begin
        EXEC %%System().AuditEvent(ID = 1094864724, Success = 1, TargetLoginName = NULL, TargetUserName = @newowner, Role = NULL, Object = @objname, Provider = NULL, Server = NULL)
    end

    if parsename(@objname, 1) is null
    begin
        raiserror(15253, -1, -1, @objname)
        return (1)
    end

    BEGIN TRANSACTION

    -- RESOLVE OBJECT NAME (CANNOT BE A CHILD OBJECT: TRIGGER/CONSTRAINT) --
    select @objid = object_id(@objname, 'local')
    if not (@objid is null)
    begin
        EXEC %%Object(MultiName = @objname).LockMatchID(ID = @objid, Exclusive = 1, BindInternal = 0)
        if (@@error <> 0)    -- lock failed
            select @objid = null
    end
    if (@objid is null) OR
        (select parent_obj from sysobjects where id = @objid) <> 0 OR
        ObjectProperty(@objid, 'IsSystemTable') = 1 OR
        parsename(@objname, 3) is not null OR
        parsename(@objname, 4) is not null OR
        exists (select * from sys.objects where object_id = @objid and schema_id in (3,4))  OR -- INFORMATION_SCHEMA, sys
        -- Check for Dependencies: No RENAME or CHANGEOWNER of OBJECT when exists:
        EXISTS (SELECT * FROM sysdepends d WHERE
            d.depid = @objid        -- A dependency on this object
            AND d.deptype > 0        -- that is enforced
            AND @objid <> d.id        -- that isn't a self-reference (self-references don't use object name)
            AND @objid <>            -- And isn't a reference from a child object (also don't use object name)
                (SELECT o.parent_obj FROM sysobjects o WHERE o.id = d.id)
            )
    begin
        -- OBJECT NOT FOUND
        COMMIT TRANSACTION
        raiserror(15001,-1,-1,@objname)
        return 1
    end

    -- object's schema name must be the same as the schema owner's name
    if not exists (select so.name
        from sys.objects so
        join sys.schemas ss on so.schema_id = ss.schema_id
        join sys.database_principals su on ss.principal_id = su.principal_id
        where object_id = @objid and so.principal_id is null and ss.name = su.name)
    begin
        -- OBJECT NOT FOUND
        COMMIT TRANSACTION
        raiserror(15001,-1,-1,@objname)
        return 1
    end

    select @oldowner = ssch.name from sys.schemas ssch join sys.objects so on (so.schema_id = ssch.schema_id) where object_id = @objid
    -- SHARE LOCK OLD SCHEMA, PREVENT DROP OF THE OWNER WHILE TXN ACTIVE --
        -- (rollback could cause phantom owner) --
    EXEC %%ObjectSchema (Name = @oldowner).Lock(Exclusive = 0) -- should succeed due to object lock above

    -- SHARE LOCK NEW SCHEMA --
    EXEC %%ObjectSchema (Name = @newowner).Lock(Exclusive = 0) -- may fail, check below anyway

    -- RESOLVE NEW OWNER NAME (ATTEMPT ADDING IMPLICIT ROW FOR NT NAME) --
    --  Disallow aliases, and public cannot own objects --
    if @@error = 0 -- lock success, indicate new owner may exist, verify further
        select @newuid = schema_id from sys.schemas where name = @newowner
                            and schema_id not in (3,4) -- INFORMATION_SCHEMA, sys

    if @newuid is null -- indicate lock failed
    begin
        EXEC @ret = sys.sp_MSadduser_implicit_ntlogin @newowner
        if (@ret = 0) -- success
            select @newuid = schema_id from sys.schemas where name = @newowner
            -- Member locked by sp_MSadduser_implicit_ntlogin
    end

    if @newuid is null OR
        -- the schema name and its owner name must be the same
        not exists (select ss.name
            from sys.schemas ss
            join sys.database_principals su on ss.principal_id = su.principal_id
            where ss.name = @newowner and ss.name = su.name)
    begin
        -- Implicit login added above is not rolled back
        -- This is same as SQL 2000
        COMMIT TRANSACTION
        raiserror(15411, -1, -1, @newowner)
        return (1)
    end

    select @stmtS = 'ALTER SCHEMA '
    select @stmtS = @stmtS + quotename(@newowner)
    select @stmtS = @stmtS + ' TRANSFER '
    if parsename(@objname, 2) is not null
        select @stmtS = @stmtS + quotename(parsename(@objname, 2)) + '.'
    select @stmtS = @stmtS + quotename(parsename(@objname, 1))

    exec (@stmtS)
    IF @@ERROR <> 0
    BEGIN
        -- Nested transaction is used by alter schema statement
        COMMIT TRANSACTION
        return (1)
    END

    COMMIT TRANSACTION
    -- WARNING AFTER THE OWNER TRANSFER --
    raiserror(15477,-1,-1)
    return (0)    -- sp_changeobjectowner

GO

通过分析存储过程，我们发现在两个地方可能抛出Msg 15001的错误信息，如下所示

 

if (@objid is null) OR
    (select parent_obj from sysobjects where id = @objid) <> 0 OR
    ObjectProperty(@objid, 'IsSystemTable') = 1 OR
    parsename(@objname, 3) is not null OR
    parsename(@objname, 4) is not null OR
    exists (select * from sys.objects where object_id = @objid and schema_id in (3,4))  OR -- INFORMATION_SCHEMA, sys
    -- Check for Dependencies: No RENAME or CHANGEOWNER of OBJECT when exists:
    EXISTS (SELECT * FROM sysdepends d WHERE
        d.depid = @objid        -- A dependency on this object
        AND d.deptype > 0        -- that is enforced
        AND @objid <> d.id        -- that isn't a self-reference (self-references don't use object name)
        AND @objid <>            -- And isn't a reference from a child object (also don't use object name)
            (SELECT o.parent_obj FROM sysobjects o WHERE o.id = d.id)
        )
begin
    -- OBJECT NOT FOUND
    COMMIT TRANSACTION
    raiserror(15001,-1,-1,@objname)
    return 1
end

 

 

-- object's schema name must be the same as the schema owner's name
if not exists (select so.name
    from sys.objects so
    join sys.schemas ss on so.schema_id = ss.schema_id
    join sys.database_principals su on ss.principal_id = su.principal_id
    where object_id = @objid and so.principal_id is null and ss.name = su.name)
begin
    -- OBJECT NOT FOUND
    COMMIT TRANSACTION
    raiserror(15001,-1,-1,@objname)
    return 1
end

 

然后我们分析发现在第二个SQL会因为不满足条件，抛出错误信息，具体分析截图所示

 

 

其实从脚本的注释信息“object's schema name must be the same as the schema owner's name”，我们已经知道，这个脚本有个逻辑，判断对象的schema name和schema owner's name是否一致，如果不一致的话，就会抛出错误信息。而这里遇到这个问题是因为我们下面脚本恰恰修改了klb这个schema的schema owner,所以才导致了这个错误出现。

 

USE AdventureWorks2014;
GO
ALTER AUTHORIZATION ON SCHEMA::[klb]  TO [dbo];

 

 

 

这里将klb的schema owner修改回来，然后执行sp_changeobjectowner就会OK了。

 

USE AdventureWorks2014;
GO
ALTER AUTHORIZATION ON SCHEMA::[klb]  TO [klb];
GO
USE AdventureWorks2014;
GO
EXEC sp_changeobjectowner 'klb.[k3]', 'dbo';
GO