A mechanism for committing a consistent set of changes into a database atomically.

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2
votes
2answers
42 views

Modeling invoices and orders

I have a problem in modeling a database that contains orders and invoices. Actually it's more of a problem from a business point of view, but it's related to modeling the database nonetheless. Model ...
5
votes
3answers
3k views

Using MySQL triggers or transactions?

I want to ask your opinion in using MySQL triggers or transactions in a website. Actually I have a history payment table with - UserId | OperationId | Comment | Credits | Sign (debit or credit). So ...
2
votes
0answers
36 views

Trigger/Event that fires when a Transaction finishes

I have a query that pulls from about 15 different tables. I am looking to materialize this into a table that stores it in xml/json. (To improve performance.) The problem I have is that these tables ...
2
votes
2answers
42 views

Locking issues under transaction on Postgres

I recently got a "Out of shared memory - You might need to increase max_locks_per_transaction" error. This is a long running process where I import a bunch of CSV files after proper processing. I ...
1
vote
2answers
40 views

Rollback Committed transaction in SQL Server

Is it possible to rollback a committed transaction? I have deleted all the data in a table. The delete statement is inside Begin Transaction and I have committed the transaction with a commit ...
1
vote
0answers
38 views

Why are SELECT queries in sleeping status holding open transactions

Using sp_WhoIsActive, I see that I have a lot of processes in a "sleeping" status, several for hours. I am not sure of the cause and am still troubleshooting (timeout? bad code with uncommitted ...
2
votes
1answer
24 views

Persistant inserts in a UDF even if the function aborts

I have a rather complicated UDF (moves around a bunch of tables as well as creates a bunch of new ones) where multiple aborts may occur. Before every operation I would like to record the time when an ...
4
votes
2answers
83 views

Avoid unique violation in atomic transaction

Is possible to create atomic transaction in PostgreSQL? Consider I have table category with these rows: id|name --|--------- 1 |'tablets' 2 |'phones' And column name has unique constraint. If I ...
4
votes
2answers
380 views

What happens if a client connection is killed while holding a lock?

What happens if a client establishes a transaction, locks a row or table, and the client process crashes before it has a chance to rollback or commit the transaction? What, if anything, does SQL ...
1
vote
0answers
50 views

SQLite insertion with junction table

I need to write a transaction for SQLite, that adds a blog post and links it to content tags, and it seems to be a bit too complicated for me. Here's an example schema: CREATE TABLE blogpost( ...
2
votes
2answers
25 views

Keep local variable after rollback in mysql

I wish to keep local variable from stored procedure even if rollback occurres. In following procedure, i "register" numbers to users. The procedure takes user_id, value_from and value_to as ...
5
votes
3answers
802 views

Deadlock Error from SQL Server 2000 to SQL Server 2008

After migrating data from SQL Server 2000 to SQL Server 2008, when I am doing any a transaction in the table which find out more row on the database, that's gives me error. Transaction (Process ...
6
votes
1answer
181 views

Transactional DDL workflow for MySQL

I was a little surprised to discover that DDL statements (alter table, create index etc) implicitly commit the current transaction in MySQL. Coming from MS SQL Server, the ability to do database ...
1
vote
1answer
27 views

parent child records - cascade deletes or transactions?

I'm about to create a parent and child table. In planning how to do CRUD operations on this data, I was wondering what is better design when it comes to deleting data. I'm using SQLite. I know ...
0
votes
1answer
385 views

MySQL: Transaction and Deadlock

I have table "tbl_data", where have a lot of rows (3 - 5 million). I have JAVA (*.jar) module from which I INSERT/UPDATE data into this table. If I start *.jar file (for example, "run.jar") and after ...
2
votes
1answer
66 views

Exclusively access a table and prevent other queries, even read queries

I'm stuck at setting transaction isolation level. Here's my scenario that happens in the application: Get unprocessed messages (using the IsProcessing flag) Set their IsProcessing to true (in RAM) ...
11
votes
1answer
6k views

MySQL transaction size - how big is too big?

I have an import process that runs every so often and I want it to be an 'all or nothing' kind of deal, aka: a transaction. There are many aspects, and the imports may yield anywhere between ...
0
votes
1answer
71 views

Simultaneous READ COMMITTED transactions updates a select for update columns

I have a READ COMMITTED transaction in which I am trying to update a row and increment a column value till it reaches a bucket value contained in another column. Please see the code below CREATE ...
5
votes
0answers
77 views

How to terminate a suspended SQL Server transaction waiting for IO_COMPLETION?

We have a transaction that has been running for more than 5 hours. We are running out of disk space. The session has been killed but it is still waiting for IO_COMPLETION. Actually the wait_type just ...
0
votes
0answers
87 views

MySQL Transaction with rollback upon @@error

I have done several transactions with MySQL but mainly using php's libraries as the handle. Using php you would have something as: $pdo->beginTransaction(); $pdo->execute(' query1; ...
1
vote
1answer
86 views

MySQL: Why is inserting data with transactions faster then without them

I am using stored procedure to generate sequence consisting of prefix and number in given range (etc sequence "AB100", "AB101", ..., "AB199", "AB200") The stored procedure includes REPEAT loop, in ...
0
votes
1answer
60 views

How to execute two transactions concurrently in PostgreSQL?

I want to execute two transactions concurrently in pgAdmin: --The first transaction should modify the age of Paul BEGIN; DECLARE newage INTEGER; --the original age of Paul is 32 newage := Select age ...
1
vote
2answers
986 views

How to avoid locks by large transactions?

We have a large application running, that requires cleanup for performance reasons. This was however not forseen when designing the application. Basically, the delete is executed from a stored ...
1
vote
0answers
93 views

How to find the number of transactions per day or per hour in a SQL 2000 database

I am trying to find a query that I can run in order to find the number of transactions per day or per hour in a SQL 2000 database. The purpose is to get the number of hits on the database. I have ...
0
votes
1answer
18 views

Use a value for a Postgresql setting in a trigger

We're using a trigger to track changes in various database tables. This works fine. Now we want to be able to track the changes back to the web request that caused them. I'd like to be able to use ...
0
votes
0answers
15 views

Transaction block on coordinator

I tried to commad a procedure described here: http://files.postgres-xl.org/documentation/add-node-datanode.html We went as far as the third step, and everything was going perfect, but during the ...
0
votes
0answers
27 views

How to reset @@IDENTITY value inside a Sybase SP

Is there any way to reset the @@IDENTITY value inside a Sybase SP? I'm writing a SP which involves a transaction, so everytime I do an insert, to check data was correctly inserted, I assign ...
1
vote
2answers
1k views

Using transactions in sqlplus

I'm coming to oracle from postgresql. In postgresql, I can use the command-line tool, psql, to execute a delete or update in a transaction: dbpool.production=> begin; BEGIN ...
3
votes
2answers
126 views

How to minimize log operations in SQL Server to avoid “log full” error

I have a database in production which constantly get log file filled, its a data warehouse and have many jobs/queries running for obvious. Below is the error which I am getting Msg 9002, Level 17, ...
3
votes
1answer
39 views

xp_cmdshell in a transaction

I need to run multiple scripts in a certain folder in a transaction and rollback if there are any errors. At this point I'm just trying to get the rollback to work without a try catch. Currently when ...
2
votes
2answers
81 views

Does MySQL support querying for the current running transaction id

PostgreSQL supports retrieving the current running transaction id using a query like this: select txid_current(); Does MySQL have any such equivalent?
1
vote
1answer
40 views

Write-lock a whole table during transaction

I need to perform a delicate operation to my table in which I will solely insert, delete and select upon all of my rows and no God may interfere with the table during this operation: the table will be ...
2
votes
2answers
241 views

Half of a transaction completes, when the other half fails?

I have done some searching on SO, MSDN, and various other sources, and I found plenty of questions about transactions, but none that seem to be exactly what I'm dealing with. Admittedly I'm still ...
1
vote
2answers
47 views

Can I select data inserted in the same uncommited transaction?

Maybe this is a dumb beginner question, but I cannot find an answer anywhere. Everywhere I read about the Transaction Isolation which solves the visibility of data within the concurrent transactions. ...
1
vote
1answer
21 views

if set global transaction, how can I commit?

I found that MySQL can set a global transaction, but can I commit in another session? refer: http://dev.mysql.com/doc/refman/5.6/en/set-transaction.html
0
votes
1answer
44 views

Limit the number of votes

I have a table of content. Users can vote on a content row. They can vote up to three times. I'm looking for the most efficient way to make sure they don't go over three votes. I can think of two ...
0
votes
0answers
53 views

Why are transactions long running?

My stored procedure has a transaction blog. I pick up a record from a database and process it in that transaction block. I noticed that my transaction log has grown in gigabytes. But my transaction ...
0
votes
0answers
43 views

What happens when a mysql connection gets lost?

I hope this is a question for the dba board. Otherwise blame me and i'll switch to unix. imagine the following situation: you have a Mysql server S and two clients A and B. Both clients connect to S ...
0
votes
1answer
74 views

Rolling update to all rows in innodb table (no rollback if aborted)

I have the following table, which stores the Social Security Death Master File database (~86M rows): CREATE TABLE `death_master_files` ( `id` int(11) NOT NULL AUTO_INCREMENT, `ssn_an` smallint(5) ...
4
votes
2answers
451 views

How do I query only for committed data while avoid a deadlock

I have a system writing batches of queries as transactions (to maintain coherency), these can be sets of 30-100 queries per transaction. These are done on multiple tables At the same time there are ...
0
votes
1answer
77 views

Transaction over linked server causing time out

When I execute this query on [RemoteServer] linked server, it works just fine: INSERT INTO [RemoteServer].[DbName].[SchemaName].[TableName] VALUES (1, 'bar'); but when puting it inside a ...
2
votes
1answer
4k views

statistics State in MySQL Processlist

I have a busy MySQL Server having query SELECT sys_sess_state, index_state, timeout_lvl, last_queued_dt, last_polled_wait_dt, create_id, create_dt, modify_id, modify_dt FROM PQR_AM_SYSTEM_SESSION ...
0
votes
0answers
70 views

How can I perform reads and writes in the same transaction?

I'm trying to implement transactions in my application. I'm just trying to implement it like the example shown in the BeginTransaction() documentation. Public Shared Sub Process(wwid As String, ...
0
votes
0answers
14 views

Should I use mysql transaction in SaaS application

Can any one elaborate whether we should use transaction for SaaS based application having simple modules like note taking and task for a team? Also if I make a Quickbook like SaaS app then do I have ...
1
vote
1answer
85 views

Read transaction log records

I am reading Remus Rusanu article on tlog.In that article he demoed on how to read log payload by using dbcc page option .My question is ,is there a way to read logrecord output of fn_dblog(null,null) ...
6
votes
7answers
3k views

On DB2, who updated a record and what did the record look like before the update?

(SQL Server 2008 R2 Standard, database under full recovery) I have a table with fields id, firstname, lastname. A statement is executed: insert into dbo.sometable (id, firstname, lastname) values ...
1
vote
0answers
112 views

PHPMyadmin transactions not commited [closed]

If I create a test table as the one below CREATE TABLE IF NOT EXISTS `TEST` ( `ID` int(11) NOT NULL AUTO_INCREMENT, `NOTE` varchar(50) NOT NULL, PRIMARY KEY (`ID`) ) ENGINE=InnoDB; and ...
3
votes
1answer
112 views

How to perform server-side transaction timeout if COMMIT TRANSACTION will never arrive?

How can SQL Server terminate one of its transactions if it exceeds preset timeout? Imagine the following transaction performed by traveling salesman's SQL client application, which is submitted ...
0
votes
2answers
57 views

Transaction has set autocommit = 0, but still the update happens before I commit

I have multiple MySQL InnoDb tables, I am trying to alter/insert/modify many of them in a SQL transaction, I set autocommit to false, so that if some SQL statements fail, I do commit the rest of ...
0
votes
0answers
55 views

SSIS Transaction Set to Required giving error

I want to use transactions in SSIS insert update. My package is working fine but When i set transaction option to "Required" i am getting an error like [OLE DB Source [23]] Error: SSIS Error Code ...