The processes of creating a point in time copy of data.

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3k 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 LOCK;"...
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1answer
58 views

Can you provide rights to a snapshot without providing rights to the database?

Is it possible to give a user or group rights to a snapshot without giving them rights to the database if the database and snapshot both reside on the same instance?
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1answer
71 views

PostgreSQL 9.2 EBS Snapshot on AWS

I found this post here back from 2011, and wanted to verify that it's still valid and good advice to take a hot snapshot of an ebs volume (PostgreSQL still running) so long as you're snapping all of ...
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1answer
870 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." ...
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1answer
756 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 ...
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1answer
23 views

Is there a way to associate a description with database snapshot?

Is there a way to associate a description with database snapshot? I usually name snapshots using original database name and timestamp: DBName-05-27-2016_1018 I would like to be able to associate a ...
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1answer
377 views

What to do when Sql Server Agent refuses to run a Job Step that references a missing database snapshot

I have a SQL Server Agent Job creating a snapshot of my main database every minute: -- delete snapshot if it exists if exists (select * from sys.databases where name = 'mydb_snapshot' ) begin ...
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1answer
2k views

How to generate replication snapshot without locking tables

When I reinitialize subscription and generate new snapshot it locks all tables and makes the database unusable for a very long time (never waited it out). Is there anyway to do this without locking?
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452 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 (...
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1answer
314 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 ...
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1answer
288 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 ...
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404 views

Script to find unused indexes over a period of time doesn't work in Oracle 11g

The statspack_unused_indexes.sql script described in this page would be incredibly useful to me, but it has been coded for an earlier version of Oracle. When I try to run it on 11g, I get the ...
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34 views

Processing data while keeping frozen frontend database online

What is the best approach at having a "frontend" database online and working, while processing and generating new data in the back? I have an scenario that some tables and even whole databases data ...
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39 views

Replication Data Issue

After configuring replication all the data from tables has replicated from publisher to subscriber. Now my requirement is whenever I insert new record in publisher only that record should replicate ...
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61 views

Strategy for multiple distinct databases in PostgreSQL

I have a 30 gb db in PostgreSQL 9.2. Running On Amazon Linux on an ec2 (web virtual machine), with the data directory mounted from its own drive (EBS). I'll call the database db30. On production it'...
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356 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 ...
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1answer
913 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 ...
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1answer
498 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 ...
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1answer
509 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 10:...
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1answer
37 views

Is it possible to restore a database snapshot from a 64 bit system to a 32 bit one?

I would like to perform a restoration test on a snapshot backup of my MariaDB database using a test server running on a 32-bit OS. My production server is a 64-bit system. I would like to know if the ...
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1answer
663 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 ...
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1answer
553 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 ...
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15 views

Change in mysql structure while backup is being created

I'm using amazon's RDS services and I wonder what happens if while a snapshot is being created I change the db structure? Will it corrupt the snapshot? Will it disallow me to make the change? I ...
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1answer
34 views

Restoring multiple snapshots with SQL Server 2008

I noticed I cannot have multiple snapshots of a SQL Server database and then restore from one of them (without I believe, deleting all but the one I want to restore). Is there a way to keep multiple ...
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32 views

Rds snapshot restore time

As part of our blue greendeployment strategy we are snapshoting the prod RDS instance and then restoring this snapshot into a new instance applying db migrations after it and linking the Green ...
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bcp copy from snapshot failed due to snap being in transition

We have a SQL job that runs each night to perform a data extract and import function. The job performs against a snapshot and copies from several tables in a serial loop. Today the job reported the ...
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12 views

Incremental snapshot in transactional replication [duplicate]

Is there a way to increment the snapshot at the distributor instead of reinitalizing the snapshot every time a new table is added/removed/altered? It is taking a lot of time to generate the snapshot. ...
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1answer
59 views

Global Read Lock for Snapshot of MySQL Data

I have a database that is entirely comprised of MyISAM tables(yes, I did not create it). I need to create a slave and start replication so we could point read-only queries there. Here is my idea: ...
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52 views

Partial restore of InnoDB from snapshot

We currently run a mix of MyISAM and InnoDB tables on an older version of MySQL. ZFS is used as the filesystem which allows us to take instant snapshots of mysql data. One useful case for this has ...
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40 views

MongoDB fsyncUnlock won't unlock occasionally on Windows

We have a MongoDB replica set installed on Windows servers, with a scheduled backup job. MongoDB is configured to use journaling. The job runs db.fsyncLock() via script on MongoDB (primary server), ...
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1answer
89 views

BCP - Different Schema

I have a transactional Replication (Non-SQL Server Publishers - Oracle) implemented for one SQL Server Database. Let's say Publishers: A, B Subscriber: C Note: I can not modify the Oracle DBs. The ...
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2answers
40 views

EC2 and setting up MYSQL Replication

my database size is very big around 100gb and when I restore it takes 3 days to restore. I am using amazon ec2. My question is I want to setup a new slave to MYSQL master, can I take a snapshot of ...
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1answer
78 views

DB2 Transaction Logs - can they be COPY-PASTE on another Disaster Recovery Server?

We have Server1 with Online Backup1, Archive Logs 1,2,3 for example and Transaction Logs from 1 to 10. We are interested in next scenario: If Server1 fails completely and we want to move everything ...
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16 views

Issues with using a database snapshot to report off of production [duplicate]

Has anyone used a database snapshot to allow reports to be run off of a production environment? I'm currently evaluating whether this is a good idea, however, it seems like since the database snapshot ...
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1answer
58 views

Group Policy - replication snapshot

Has anyone seen a domain Group Policy stop a transactional replication snapshot from being configured and executed "A required privilege is not held by the client". To cut a long story short... I am ...
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782 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 ...
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510 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 ...
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1answer
136 views

Is possible do an online snapshot backup , without archive logs at Oracle Database?

Using Oracle Database Standard Edition 11r2 . I'm looking a way to backup the database with zero downtime , using a snapshot of datafiles (LVM snapshots) and without need backup de archive logs. ...
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1answer
343 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 ...
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1answer
95 views

quick checkpoints for development mode

i'm a programmer, not a dba. i need a mechanism to quickly make a snapshot of a database (oracle 11g XE) before i run migration. migration changes data, grants, DDL (tables, triggers, lexers, views ...