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1
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1answer
48 views

Snapshot agent stuck at 48%

We are having to redo a publication/subscription and while running the snapshot agent it stalls at 48% with the message "The process is running and is waiting on a response from the server." ...
0
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1answer
83 views

Taking hot backup of slave node in postgres (master-slave config with repmgr)

I have a postgresql setup with master-slave configuration using repmgr. I'm struggling with taking a consistent snapshot backup (pg_start_backup) of the slave node, this is due the fact that the slave ...
1
vote
2answers
94 views

Capturing Table Changes without killing the server

I have an Application that uses Oracle. Among many things, this application has timesheet entry. Supervisors enter their employee's hours, allocating to charge codes, under the appropriate rate ...
0
votes
1answer
70 views

Drop & re-add subscribers to transactional replication

I'm trying to get Stored Procedures to execute on the subscribers, as seems to be best practice. I already have transactional replication running happily. I add a new sproc, and set properties of ...
1
vote
2answers
222 views

SQL Server Transactional replication failed due to snapshot agent failure

I'm trying to set transactional replication between 2 SQL Server 2012 named instances. I've followed a step by step manual and created a Publication. But once I look into Replication Monitor I Get ...
5
votes
3answers
272 views

Using SQL Snapshot Replication to refresh TEST databases from PRODUCTION. Why not?

What are the drawbacks and downsides? We want to schedule automatic nightly refreshes of 20 databases, approximately 1GB each, from the PRODUCTION server to the TEST server. We're setting up SQL ...
0
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0answers
94 views

Snapshot transaction throws random conflict. Should I choose something else? [closed]

I've got a problem with my transaction. Currently it runs in IsolationLevel.Snapshot. The action it does, can take some time depending on the amount of data, it has to import. What it does: Create ...
1
vote
2answers
54 views

Can PostgreSQL support integration test with some kind of throwaway overlay?

It's a common problem to write integration tests that include a database. If the test changes the database then it could effect other tests or the next run of itself. I know that I could wrap my test ...
3
votes
1answer
50 views

Advice on setting up a Reporting server

I'd like to ask advice on setting up a reporting server please. We have a SQL Server (on a VM) that handles operations. (SQLOps) This primary SQL server instance has a secondary Log Shipping ...
1
vote
1answer
58 views

.NET error when trying to create snapshot for transactional Replication

I encountered a bizarre prob today while creating a transactional publication on a SQL 2012 server running on Windows Server 2008R2. I had just had some success creating and initializing some Merge ...
0
votes
2answers
222 views

Can I time out my scripted “FLUSH TABLES WITH READ LOCK;”?

I have a single Enterprise Linux 6 system running MySQL 5.5. I am attempting to use LVM to capture a weekly filesystem snapshot. However, as many of us have experienced, "FLUSH TABLES WITH READ ...
1
vote
1answer
337 views

Should snapshot agent continue to run in transactional replication?

We have transactional replication running for a large number of publications on sql server 2008 R2 2 node active/active cluster. I have noticed that the snapshot agent job runs hourly and it looks ...
2
votes
2answers
236 views

Excessive replication snapshot size causing failure

I am searching for an explanation of a replication snapshot being in excess of 5 times what we're predicting Following a replication failure we are attempting to reinitialise subscriptions with a new ...
4
votes
3answers
558 views

How to undo every change made to a database in a controlled environment?

I'm doing system testing of a product, and several tests are severely changing the data of a demo database. The data is quite complex to create queries which will undo the changes done by the tests; ...
1
vote
0answers
102 views

Transactional Replication times-out with Database Snapshot on subscription

I have a VLDB that is being replicated using transnational replication. The performance has been terrible, and the process frequently times out. After much investigation, including Service Packs and ...
-1
votes
1answer
136 views

Should I keep pg_xlog on the same disk as data if using disk snapshotting?

We're running on EBS volumes on EC2. We're interested in leveraging EBS snapshotting for backups. However, does this mean we'd need to ensure our pg_xlog is on the same EBS volume as our data? (I ...
2
votes
1answer
191 views

Would using timestamps solve consistency issues with snapshot isolation?

I'm considering using Snapshot Isolation for some large queries being send from an Access 2007 frontend. These queries are occasionally causing ASYNC_NETWORK_IO waits, and some blocking as well. I'm ...
5
votes
2answers
318 views

Database stuck in restoring and snapshot unavailable [closed]

I tried to restore my database from a snapshot. This usually took around a minute to complete the last couple of times. When I did it today, it didn't complete for around 30 minutes and the spid was ...
5
votes
1answer
188 views

Sql server snapshot isolation overhead when read_committed_snapshot is enabled

When SQL Server's read committed snapshot is on (and thus some amount of row versioning is necessary), is there any additional overhead caused merely by enabling snapshot isolation? Snapshot ...
0
votes
1answer
112 views

READ_COMMITTED_SNAPSHOT support in SQL Server 2005 Express

I wonder if SSE 2005 supports the READ_COMMITTED_SNAPSHOT database option. What I found is this article: Features Supported by the Editions of SQL Server 2005. It states that SSE 2005 supports ...
6
votes
1answer
837 views

How can I query for existing database snapshots in SQL server?

I'm trying to create a t-sql query that can determine whether or not a given database has any database snapshots that were created from it. For example, if I were to create a snapshot like this: ...
1
vote
1answer
2k views

What is the proper way to backup MySQL database with rsnapshot?

I want to backup my website that contains both user uploaded images and data stored in MySQL database such that they are always consistent with each other in any particular point of time. While ...
5
votes
1answer
342 views

How can I determine the date of a snapshot in SQL Server 2008r2?

I am working on implementing an ETL process to load data into a warehouse. Part of this process is pulling data from our production server (Server P) to a staging server where the actual load into ...
3
votes
1answer
95 views

How widespread is the adoption and usage of database snapshots?

After reading up on database snapshots, it seems that they are useful as a backup and quick restore method for small DDL and DML changes. Additionally they are useful for large scale dev/test ...
1
vote
1answer
298 views

Snapshot not picking up new articles in SQL Server 2012 transaction replication when added through script

I am trying to add new articles to an existing publication in SQL Server 2012. I am adding the article to the publication with the syntax --add the table into the correct publication sp_addarticle ...
2
votes
3answers
10k views

Why is my database stuck in the Restoring state?

I have some unit tests that manipulates data in a database. In order to guarantee that the database state is always the same throughout all the tests, we're trying restore a database snapshot at the ...
1
vote
0answers
222 views

Transactional Replication Snapshots causing serious locking after 2012 upgrade

I am experiencing serious locking when adding new articles to an existing transactional replication publication, which is hanging the website. This is the first time I have attempted this since I ...
6
votes
3answers
717 views

SQL Server 2008 mirrored Database with manual failover, need reporting database

Our current setup is a principal database used in production with a manual failover mirrored database for HA. I need to setup a reporting database as well. What would be the best approach? Shall I ...
7
votes
1answer
616 views

Does SQL Server Snapshot replication completely copy the data every time or does it issue deltas?

I am looking at snapshot replication between two servers. Here is what I have: 500GB database ~500MB nightly bcp loads ~50MB daily transactions I was asking other DBAs in the company about which ...
3
votes
1answer
154 views

SQL Server Snapshot Replication and SRDF compatability

Is there anything that breaks down if you use snapshot replication and then use SRDF for disaster recovery (DR) on the snapshot publisher? Specifically I am asking is: On the DR system, would the DR ...
1
vote
1answer
482 views

Merge replication - can't create snapshot – timeout

I have a SQL Server 2008 database, and I need a merge replication because I want to sync with mobile devices afterwards. So I created a replication but when it comes to start the snapshot agent, the ...
5
votes
1answer
917 views

EC2 - How to correctly back up PostgreSQL data?

Here is the setup: 1 small Amazon Linux (EBS-backed) EC2 instance with 3 additional volumes. This is both a web server and database server. One volume for code, one for the PostgreSQL (8.4) data ...
2
votes
3answers
883 views

Transactional Replication snapshot locking Publisher db from beginning

I have recently upgraded my remote distributor to 2008r2. I am getting complete system locks when attempting to generate a new snapshot in the day when we have added an article to the publication (we ...
1
vote
1answer
197 views

SQL 2005 Replication - How do I get the DA Profile MaxBCP option to work with a Transactional Publication?

I have two publications on a database. One is a transactional publication, the other is a snapshot publication. We have a stand-alone Distributor (separate from the publisher) and both publications ...
1
vote
1answer
383 views

Restore the data from Snapshot Backup when the data spans over multiple directories?

Problem : I have one master and various slave on EC2, all running with the innodb_file_per_table as OFF. We have done some testing work on one of the slave say server A.and it takes a huge amount of ...
5
votes
3answers
385 views

What methods are available to create a snapshot of an oracle database for testing purposes?

I am new to databases and have just been assigned to work with Oracle. We want to create a snapshot of the database for testing purposes that will allow us to revert back once we're done. I'm a bit ...
2
votes
1answer
2k views

How to Create Snapshot Backups in MySQL

I've seen a lot of people talking about snapshots backup, even I'm reading a book about mysql but nobody explain the code how to make a snapshots backup. This is what the book says: flush tables ...
8
votes
1answer
367 views

Are SQL Server Database writes slower with Snapshot Isolation?

I have a lot of deadlocks going on in my system. I would like to use Snapshot Isolation to fix them, but my DBA has reserves about it. One of his concerns is that Snapshot Isolation slows down ...
2
votes
2answers
721 views

SQL Server: in what situation can snapshot restore be blocked after SET SINGLE_USER?

In my tests, i have the following script: USE master; ALTER DATABASE [TestDB] SET SINGLE_USER WITH ROLLBACK IMMEDIATE RESTORE DATABASE [TestDB] FROM DATABASE_SNAPSHOT = 'TestDBSnapshot' In some ...
7
votes
2answers
615 views

Advantage of using a database snapshot for reporting purposes

What is the performance advantage of using a snapshot of a database for reporting purposes? The way I see it, it would probably downgrade performance since for every write in the original database, ...
1
vote
1answer
350 views

Oracle Materialized View

I need your help with a issue on Oracle Materialized View. I created the Materialized View using the following command: CREATE MATERIALIZED VIEW SNAP_TEST TABLESPACE tbs NOCACHE LOGGING NOPARALLEL ...
4
votes
1answer
1k views

Remote queries at SNAPSHOT isolation level

I'm experimenting with snapshot isolation level. Whenever I try to access a linked server, I get an error: Remote access is not supported for transaction isolation level "SNAPSHOT" I wasn't able ...
0
votes
1answer
350 views

ADDM report dba_hist_snapshot

How does ADDM report work? When I take two snapshots one for START: 05-OCT-2011 09:00:00, END : 05-OCT-2011 10:00:00 and another one for START: 06-OCT-2011 09:00:00, END : 06-OCT-2011 ...
4
votes
1answer
549 views

Why are Stored Procedure schema changes not being replicated when using ”initialize with backup”?

In SQL Server I have set up transational replication using the "initialize with backup" option. Data is being replicated fine, as are schema changes to tables. However, schema changes to stored ...
18
votes
3answers
2k views

Is it possible to quickly create/restore database snapshots with PostgreSQL?

First of all, I'm a developer, not a DBA or sysadmin; please be gentle :) I'm working on an application workflow where a single user action will trigger complex changes in the database - creating ...
2
votes
2answers
1k views

What is the best way to automatically create a snapshot of the table at the certain time?

I have running and quite loaded PostgreSQL server. I need to take snapshots of the certain tables at the certain time (midnight). Those tables are pretty loaded (a lot of updates and inserts). What ...