barnesd1
asked on
SQL Server TRANSACTION across mutliple SP calls
Hi there
I am working on a VB6 project that uses SQL Server 7 database. I was hoping to retro-fit a transaction to cover all the processing for a each particular customer. I was trying to issue a BEGIN TRANSACTION MyCustTran then do various processing and call 10 different stored procedures from VB. It seems this can't be done? Get error "Transaction count after EXECUTE indicates that a COMMIT or ROLLBACK TRANSACTION statement is missing. Previous count = 1, current count = 0."
I was wondering if sp_getbindtoken could be used for this. I'm trying to avoid major recoding of the application. Hope you can help
Dave
I am working on a VB6 project that uses SQL Server 7 database. I was hoping to retro-fit a transaction to cover all the processing for a each particular customer. I was trying to issue a BEGIN TRANSACTION MyCustTran then do various processing and call 10 different stored procedures from VB. It seems this can't be done? Get error "Transaction count after EXECUTE indicates that a COMMIT or ROLLBACK TRANSACTION statement is missing. Previous count = 1, current count = 0."
I was wondering if sp_getbindtoken could be used for this. I'm trying to avoid major recoding of the application. Hope you can help
Dave
ASKER
The question is where to put the
BEGIN DISTRIBUTED TRAN
statement. I received the same error when I tried this in a stored proc on its own
BEGIN DISTRIBUTED TRAN
statement. I received the same error when I tried this in a stored proc on its own
Try this:
Sub TransactionDemo()
Dim Cn as new ADODB.Connection
Cn.ConnectionString = ....
...
Dim Cmd_1 as new ADODB.Command
...
Dim Cmd_n as new ADODB.Command
...
On error Goto ERRHandler
Cn.Open
Cn.BeginTrans
Set cmd.ActiveConnection = moConnection
cmd_1.CommandType = adCmdStoredProc
cmd_1.CommandText = "sp_1"
cmd_1.Execute
...
...
Set cmd.ActiveConnection = moConnection
cmd_n.CommandType = adCmdStoredProc
cmd_n.CommandText = "sp_N"
cmd_n.Execute
...
Cn..CommitTrans
cn.close
exit sub
ERRHandler:
Cn.RollbackTrans
Cn.Close
End Sub
Sub TransactionDemo()
Dim Cn as new ADODB.Connection
Cn.ConnectionString = ....
...
Dim Cmd_1 as new ADODB.Command
...
Dim Cmd_n as new ADODB.Command
...
On error Goto ERRHandler
Cn.Open
Cn.BeginTrans
Set cmd.ActiveConnection = moConnection
cmd_1.CommandType = adCmdStoredProc
cmd_1.CommandText = "sp_1"
cmd_1.Execute
...
...
Set cmd.ActiveConnection = moConnection
cmd_n.CommandType = adCmdStoredProc
cmd_n.CommandText = "sp_N"
cmd_n.Execute
...
Cn..CommitTrans
cn.close
exit sub
ERRHandler:
Cn.RollbackTrans
Cn.Close
End Sub
Dear
begin distributed tran will be use in place of begin tran
and as you are saying that still the same error is coming then please use
if @@ERROR<>0
begin
select @return="ERROR1" return can be defined as output parameter in procedure
rollback tran
return (99)
end
if @@ERROR<>0
begin
select @return="ERROR2" return can be defined as output parameter in procedure
rollback tran
return (99)
end
and so on after each transaction and check on which statement you are getting error
if possible send your code
Banger
begin distributed tran will be use in place of begin tran
and as you are saying that still the same error is coming then please use
if @@ERROR<>0
begin
select @return="ERROR1" return can be defined as output parameter in procedure
rollback tran
return (99)
end
if @@ERROR<>0
begin
select @return="ERROR2" return can be defined as output parameter in procedure
rollback tran
return (99)
end
and so on after each transaction and check on which statement you are getting error
if possible send your code
Banger
ASKER
I was trying to do a BEGIN TRAN in a sp on its own eg
Create Proc MyCustOpenTran as
Begin
Begin Transaction ThisCustomer
End
Create Proc MyCustCommitTran as
Begin
Commit Transaction ThisCustomer
End
Then in VB call
Exec MyCustOpenTran
Exec Sp1
Exec Sp2
Exec Sp3
Exec MyCustCommitTran
But I get the error about open transactions at the MyCustOpenTran stage
Create Proc MyCustOpenTran as
Begin
Begin Transaction ThisCustomer
End
Create Proc MyCustCommitTran as
Begin
Commit Transaction ThisCustomer
End
Then in VB call
Exec MyCustOpenTran
Exec Sp1
Exec Sp2
Exec Sp3
Exec MyCustCommitTran
But I get the error about open transactions at the MyCustOpenTran stage
Do not use trans in SPs,
use them in VB,
start one
then do every SP call you want
the if every return code is OK
do a commit...
use them in VB,
start one
then do every SP call you want
the if every return code is OK
do a commit...
ASKER
Please give example VB code for creating transactions - surely this is done on the db?
ASKER CERTIFIED SOLUTION
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Dear There are various ways by whic you can do this
Insteaed of using the begin tran you should use the
BEGIN DISTRIBUTED TRAN
COMMIT TRAN
Also use the following block for ERROR trapping
after any statement (like insert/delete/update or any other)
if @@ERROR<>0
begin
select @return="ERROR" return can be defined as output parameter in procedure
rollback tran
return (99)
end
block..
As if you there is any error in any of consecutive procedure it will help you the control the transaction
But for this you should start the MSDTC service of SQL-Server which you can find in the service manager of SQL.
try with this you will definetely improve your proc performance
if any problem face send mail on bangerarun@yahoo.co.in