T-sql Try Catch - Using Triggers And Nested Stored Procedures

Jan 7, 2008

For every trigger and stored procedure I have a try-catch that writes to an error_log table.
The problem is the inner error is not preserved, always get:
The current transaction cannot be committed and cannot support operations that write to the log file. Roll back the transaction.

As seen below - though commented out:
I tried commiting any transactions - though I didn't create one.
I played with the
XACT_STATE though that was 0
My test case was last procedure has 1/0

Thanks,
Russ
-----------------------------------------------------------

Below is what I have

Step 1)

ALTER Trigger [trg_ActivityLogEntryReportsError] ON [dbo].[ActivityLog]
FOR INSERT AS

DECLARE @ActivityLogID int
,@AlertMessageTypeID int
,@comment nvarchar(max)
,@Error_Source nvarchar(max)
--- etc.
SELECT
@ActivityLogID = ActivityLogID
,@AlertMessageTypeID = AlertMessageTypeID
,@Comment = Comment
FROM INSERTED
BEGIN TRY

if @AlertMessageTypeID = 2 -- activity reported an error
begin
exec proc_CreateAlertLogEntry_forError
@ActivityLogID
,@Comment

update ActivityLog
set flgActivityChecked = 1
where @activityLogId = activityLogID
end
END TRY


BEGIN CATCH
select
@Error_Source = 'trg_ActivityLogEntryReportsError '
,@Error_Procedure = ERROR_Procedure()
--- etc.
INSERT INTO ERROR_LOG
( Error_Source
,Error_Procedure
,Error_Message
--- etc.
)
VALUES
(
@Error_Source
,@Error_Procedure
,@Error_Message
---etc.
,@Error_Comment )
-- if @@TRANCOUNT > 0
--begin
--commit
--end
END CATCH

Step 2)

/*
This will be called by a Trigger
*/
ALTER Procedure [dbo].[proc_CreateAlertLogEntry_forError]
(@ActivityLogID int
,@Comment nvarchar(max))
AS

Declare
@ProcessScheduleID int
,@ProcessID int
--,@comment nvarchar(max)
,@Error_Source nvarchar(max)
---etc
BEGIN TRY
insert into AlertLog
(
AlertMessageTypeID
,comment
,ActivityLogID
)
values
(
2 -- error
,@comment
,@ActivityLogID
)

end

END TRY


BEGIN CATCH
PRINT 'ERROR OCCURED'
PRINT ERROR_Procedure() + ' ' + ERROR_MESSAGE()
select
@Error_Source = 'proc_CreateAlertLogEntry_forError '
---etc.
INSERT INTO ERROR_LOG
( Error_Source
,Error_Procedure
,Error_Message
---etc.
)
VALUES
(
@Error_Source
,@Error_Procedure
,@Error_Message
--- etc.)

-- if @@TRANCOUNT > 0
--begin
--commit
--end
END CATCH

update ActivityLog
set
flgActivityChecked = 1
,UpdatedDate = getdate()
,UpdatedBy = suser_sname()
where
ActivityLogID = @ActivityLogID


STEP 3

ALTER Trigger [trg_AlertLogEntry_SendsOnInsert] ON [dbo].[AlertLog]
FOR INSERT AS

declare
@AlertLogID Int
,@AlertMessageTypeID int
,@Comment nvarchar(max)
,@Error_Source nvarchar(max)
,@Error_Procedure nvarchar(max)
,@Error_Message nvarchar(max)
--- etc.
SELECT
@AlertLogID = AlertLogID
,@AlertMessageTypeID = AlertMessageTypeID
,@Comment = isnull(Comment,'')
,@ActivityLogID = isnull(ActivityLogID,-1)
FROM INSERTED

BEGIN TRY

PRINT 'trg_AlertLogEntry_SendsOnInsert'
PRINT @COMMENT
exec proc_SendEmail
@AlertLogID
,@AlertMessageTypeID
,@comment
,@ActivityLogID


END TRY


BEGIN CATCH

select
@Error_Source = 'trg_AlertLogEntry_SendsOnInsert '
,@Error_Procedure = ERROR_Procedure()
,@Error_Message = ERROR_MESSAGE()
--- etc.
INSERT INTO ERROR_LOG
( Error_Source
,Error_Procedure
-- etc.)
VALUES
(
@Error_Source
,@Error_Procedure
,@Error_Message
---etc.)
-- if @@TRANCOUNT > 0
--begin
--commit
--end
END CATCH



STEP 4

ALTER Procedure [dbo].[proc_SendEmail]
(
@AlertLogID Int
,@AlertMessageTypeID int
,@Comment nvarchar(max) = ''
,@ActivityLogID int = -1
)


AS

declare @AlertSubject nvarchar(512)
,@AlertBody nvarchar(max)
,@myQuery nvarchar(512)
,@profile_name1 nvarchar(128)
,@return_value int
,@mymailitem int
,@Error_Source nvarchar(max)
---etc.
,@Error_Comment nvarchar(max)
,@Test int
/*
@return_value int -- not using at this point but 0 is OK 1 is failure
@mymailitem int -- not using now could store mailitem_id which is on msdb.dbo.sysmail_mailitems
sysmail_mailitems.sent_status could be either 0 new, not sent, 1 sent, 2 failure or 3 retry.
*/

select top 1 @profile_name1 = [name] from msdb.dbo.sysmail_profile
order by profile_id

set @profile_name1 = rtrim(ltrim(@profile_name1))
print '@profile_name1: ' + @profile_name1
print '@comment: ' + @comment
Declare @CrsrRecipient Cursor

BEGIN TRY
PRINT 'proc_SendEmail'
--set @test = 1/0 'test crashing
select
@AlertSubject = 'AlertSubject'
,@AlertBody = 'AlertBody'

,@recipients = 'russ@test.com'


print 'sending email ' + CAST(getdate() as nvarchar(100))
EXEC @return_value = msdb.dbo.sp_send_dbmail
@profile_name = @profile_name1
,@recipients = @EMAILID
,@body = @AlertBody
,@subject = @AlertSubject
,@mailitem_id = @mymailitem OUTPUT

print 'Done ' + CAST(getdate() as nvarchar(100))
print cast(@return_value as nvarchar(100))



update alertlog
set AlertSendStatusID = 1 --sent
where
@AlertLogID = AlertLogID

END TRY

BEGIN CATCH
PRINT 'ERROR OCCURED'
PRINT ERROR_Procedure() + ' ' + ERROR_MESSAGE()
select
@Error_Source = ' proc_SendEmail '
,@Error_Procedure = ERROR_Procedure()
--- etc.
INSERT INTO ERROR_LOG
( Error_Source
,Error_Procedure
---etc.)
VALUES
(
@Error_Source
,@Error_Procedure
,@Error_Message
--- etc.)


update alertlog
set AlertSendStatusID = 2 --error
where
@AlertLogID = AlertLogID

--if @@TRANCOUNT > 0
--begin
--commit
--end
END CATCH

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Nested Triggers

Dec 3, 2005

I'm evidently not understanding nested triggers and I'm looking forsome help.I've an Invoice table (see below) that I want to enforce two actionsvia after triggers.The first trigger maintains a set of audit columns in the tableindicating the date on which the row was inserted, the date of thelast change, and the user who made the last change (see below)The second trigger maintains the invoice number across revisions. Aspecific invoice for a contract may have multiple rows as revisionsare made during processing. So if a change is made to an invoicenumber in one row, the trigger makes sure that all the associatedrevision rows are updated with the new invoice number. (see below)If I implement these as two triggers, I hit the 32 level limit and Idon't understand why.Regardless of the order (and I haven't set the first trigger so theorder is undefined) I would expect that my second trigger wouldexecute only once; that after one execution, there are no rows withthe old invoice number and its execution would NOT initiate the firsttrigger.So I expect to get three or four levels of trigger execution dependingon the order.But with two triggers, it consistently reports exceeding the 32 levellimit restriction.I've combined the processing into one trigger to get around thisproblem (with some small modifications to process the audit columns),but I really would like to understand what's going on.Any help would be appreciated.************** Abbreviated table def*******CREATE TABLE [tblInvoices] ([Inv_id] [int] IDENTITY (1, 1) NOT NULL ,[Contract_Info_ID] [int] NOT NULL ,[Invoice_No] [varchar] (50) NOT NULL ,[Invoice_Revision] [int] NOT NULL ,[inv_audit_entry_date] [datetime] NULL ,[inv_audit_change_date] [datetime] NULL ,[inv_audit_change_user] [varchar] (255) NULL ,[inv_timestamp] [timestamp] NULL ,CONSTRAINT [PK_tblInvoices] PRIMARY KEY CLUSTERED([Inv_id]) ON [PRIMARY] ,CONSTRAINT [FK_tblInvoices_tblContractInformation] FOREIGN KEY([Contract_Info_ID]) REFERENCES [tblContractInformation] ([Contract_Info_ID])) ON [PRIMARY]**************************************************************** ********************** First Trigger - Audit column trigger********declare @wrkDate datetimeset @wrkDate = GETDATE()declare @wrkUser varchar(255)set @wrkUser = SUSER_SNAME()update tblInvoicesset inv_audit_entry_date = coalesce(t1.entryDate, @wrkDate),inv_audit_change_date = @wrkDate,inv_audit_change_user = @wrkUserfrom (select i1.inv_id as entryID, d1.inv_audit_entry_date asentryDatefrom inserted as i1left join deleted as d1 on d1.inv_id = i1.inv_id) as t1where inv_id = t1.entryID**************************************************************** ******************** Second Trigger - Invoice Number*******update tblInvoicesset invoice_no = t1.newInvoiceNofrom (select i1.contract_info_id as ContractInfoID, i1.invoice_noas newInvoiceNo, d1.invoice_no as oldInvoiceNofrom inserted as i1inner join deleted as d1 on d1.inv_id = i1.inv_idwhere d1.invoice_no <> i1.invoice_no) as t1where contract_info_id = t1.ContractInfoIDand invoice_no = t1.oldInvoiceNo**************

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Nested Triggers Problem

Mar 12, 2001

Hello all.
I have a problem:
There are 3 tables:
FIRST (columns: m_id, m_name, m_archive),
SECOND (columns: m_id, m_name, m_archive, m_first_id),
THIRD (columns: m_id, m_name, m_archive, m_second_id).

And relations between them are following:
FIRST -------E SECOND -------E THIRD

What I have to do is:
When flag FIRST.m_archive is changed, flag m_archive has to be changed in
all children tables.

I write trigger for table FIRST:

CREATE TRIGGER [FIRST_ONCHANGE] ON [FIRST]
FOR UPDATE
AS

declare @v_archive_old int
declare @v_archive_new int
declare @v_new_id uniqueidentifier
declare @v_count int

select @v_archive_old = deleted.m_archive
from deleted

select
@v_archive_new = inserted.m_archive,
@v_new_id = inserted.m_id
from inserted

if @v_archive_old <> @v_archive_new
begin
update SECOND
set m_ARCHIVE = @v_archive_new
where
m_FIRST_ID = @v_new_id
end
/

And trigger for table SECOND:

CREATE TRIGGER [SECOND_ONCHANGE] ON [SECOND]
FOR UPDATE
AS

declare @v_archive_old int
declare @v_archive_new int
declare @v_new_id uniqueidentifier
declare @v_count int

select @v_archive_old = deleted.m_archive
from deleted

select
@v_archive_new = inserted.m_archive,
@v_new_id = inserted.m_id
from inserted

if @v_archive_old <> @v_archive_new
begin
update THIRD
set m_ARCHIVE = @v_archive_new
where
m_SECOND_ID = @v_new_id
end
/

Suppose, there are next rows in tables FIRST, SECOND, THIRD:
FIRST SECOND THIRD
first_1 first_1_second_1 first_1_second_1_third_1
first_1_second_1_third_2
first_1_second_1_third_3
first_1_second_2 first_1_second_2_third_1
first_1_second_2_third_2

Problem is following:
When I change flag m_archive in row first_1
flag m_archive is changed in all children objects (tables SECOND and THIRD), except rows:
first_1_second_2_third_1
first_1_second_2_third_2

i.e. trigger in table SECOND is executed only once -
when first row first_1_second_1 (table SECOND) is changed.

I have a question:
How to make MS SQL Server 7.0 update hierarchicaly all children objects?

Thank you.
Anton.

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