Questions tagged [snapshot]

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

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28 views

Does pg_export_snapshot work across replicas?

This is probably of little importance, but it's possible in PostgreSQL to retrieve the transaction snapshot with pg_export_snapshot and restore it with set transaction to start a second transaction ...
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11 views

SQL Server 2014 Replication Subscription Sync

I have SQL Server 2014 Replication set up. It is my understanding that when you add a new subscription that it will truncate the table and re-insert/re-initialize the tables you are subscribing to. ...
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19 views

What kind of changes does snapshot file store?

Assume that I created a database called [DBS] and inside that database I created a table called [products]. Then I inserted 4 rows into [products]. Afterwards I took a snapshot of [DBS]. As a result,...
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57 views

SQL Server 2016 SP1 + strategy for long term version retention (snapshots, temporal tables, other?)

We have a data mart fed from an upstream data warehouse that we generate reports out of for external parties. I have a business requirement to preserve the state of the database for each month end to ...
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30 views

how to change the publication settings via T-SQL?

I set up a new server to host some database publications. On the same server I set the distributor db. All goes on well, then while running a snapshot of a publication on transactional replication: ...
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59 views

Snapshot on Always On Availability Group in suspect mode

Our configuration is 2 SQL Servers 2016, enterprise edition, 13.0.5026.0, running on Windows Server 2012 R2. Created availability group with one database in it. Database has 3 data files in it, all ...
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24 views

Snapshot replication from SQL Server 2012 to SQL Server 2008R2

We are using snapshot replication as a standby to replicate prod data for a month from 2012 to 2008R2 after migration from 8R2 to 2012, just as a rollback process. Using snapshot replication for 10 ...
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262 views

Is it possible to support multiple snapshots / store a snapshot / restore from a snapshot to a state with another snapshot?

So, I would like to have a snapshot structure like the following: A snapshot 1 is taken. Some code is run, then a snapshot 2 is taken. Then some more code is run, and the database is reverted to ...
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1answer
51 views

Snapshot Folder Location for Replication with Clustered Instance

I am assigned to create a transactional replication with a SQL Server clustered instance for reporting purposes. I'm planning to use the Distributor and the Subscriber on the same box. Regarding the ...
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2answers
486 views

Unable to fully drop a database snapshot

I have a job that drops and re-creates a snapshot, it's currently failing when trying to create the database as it says the database already exists. The database however does not have an entry in ...
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1answer
137 views

Transactional Replication initialize from Backup Issues

I implemented Transaction Replication (pull subscription with distributor at subscriber) with initialize from backup. It was working good and today when i checked replication monitor,it shows error on ...
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362 views

Log Shipping with Database Snapshot for Read Queries

Company may implement Log Shipping with Snapshot. This provides basic Disaster Recovery with Reporting area. Server A OLTP contains database which log ships to Server B (ReadOnly-Standby), Snapshot is ...
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1answer
222 views

SQL Snapshot Redirect

Company is implementing Database Mirroring Asynchronous with Snapshot. This provides some Disaster Recovery with Reporting area. Server A Principal contains database which mirrors to Server B, ...
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2answers
59 views

Making Production database as Publisher and Distributor for Snasphot Replication

In our environment we are using Log Shipping as DR. Our primary database is a clustered instance. My requirement is to set up a snapshot replication for reporting purposes. My plan is as follows: ...
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1answer
842 views

Snapshot folder Access

I have set up a Transaction Replication, with the distribution server as subscriber itself and implemented pull subscription, to avoid load on my publisher. When I created publisher at my source ...
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113 views

Transaction Replication Issue

I am trying to set up a Transaction Replication. I encountered error when i created a Publisher.While creating publisher i gave SQL Server agent accounts for Snapshot Agent and Log Reader Agent. When ...
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1answer
940 views

Snapshot Backups for SQL Server Databases

We are researching the direction of using Snapshot backups for SQL Server, rather than more traditional backup methods. We are using CommVault (and would be for snapshot too..) I am trying to ...
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2answers
144 views

Unpredictable performance of queries against snapshot

I've got a basic reporting solution working where we have a collection of views that get exported to CSV files on a daily basis. For numerous reasons, we don't run the reports against the ...
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1answer
250 views

SQL Replication for Schema changes

I want to configure the snapshot replication for all the articles. The problem iam facing is first time all the articles got sync on the subscriber. But later on let suppose if there is a schema ...
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1answer
382 views

Best way to create a daily snapshotted read-only db in RDS?

We have a PostgreSQL db instance in RDS. In our application we need to run a daily export in the early hours of every day, the export and transformation may take some time and one issue we've found is ...
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36 views

Are there open source RDBMS that support non-backup snapshots? [closed]

I'm not looking for point-in-time backups but some kind of "time machine" read-only functionality. For example when running a SELECT query I would like to tell the database to run it on the data as ...
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87 views

Cassandra's nodetool snapshot renders node unresponsive

I have noticed that using nodetool snapshot on a Cassandra node causes heavy load (100% on two cores) for around 10-30 seconds. The snapshots are around 1GB in size. During that time connections to ...
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1answer
526 views

Snapshot isolation transaction failed in database 'Master'

We have a production database running in snapshot isolation level. The application have a functionality where the user can selected a few records and command it to be processed. A lot is done while ...
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1answer
129 views

Querying mirrored database

I need to create a snapshot of one of our mirror databases. I have gone through a couple of links and it looks like querying can be achieved here by creating a snapshot at a mirror server. However, ...
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2answers
1k views

Fast backup & restore of MySQL database to revert recent changes

I have a decently big MySQL DB (InnoDB) with size about 400 MB. Thus dumping the whole DB with mysqldump and restoring it back takes forever (more than 15 minutes, which is unacceptable). For ...
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1answer
946 views

Snapshot_isolation_state_desc NOT turning off [closed]

I am trying to resolve the following issue and need your help. We wanted to turn on is_read_committed_snapshot_on and Snapshot_isolation_state_desc ON on our db! When I ran following command to ...
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1answer
26 views

Help with updating and archiving data

I'm building a MySQL database and a frontend. One function of the database application is to make an invoice. I'm looking for a way to archive all of the data that went onto the invoice so that if ...
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1answer
89 views

Turning on RCSI on on-prem CRM 2015

We have crm-2015 on-prem, inplace and running and causing lot of deadlocks when someone tries to update anything in batch and same time if multiple users are reading those activities. We are ...
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2answers
2k views

Replication Access denied in Replication

I have a database on-prem, and I have an Azure account. I need to establish transactional replication from the on-prem to Azure. First of all I created a publication and after that I made a ...
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1answer
939 views

Database snapshot “The requested operation could not be completed due to a file system limitation”

Preface At the company I'm working for we use database snapshots in our ETL process to ensure the data is in a consistent state. The snapshot files are placed on a separate disk (in our case the X:). ...
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1answer
217 views

Can't bring up slave from ec2-consistent-snapshot due to uncommitted prepared transaction

I'm struggling with bringing up a slave instance using a snapshot created by ec2-consistent-snapshot, in my log it's describing the fact that an unprocessed transaction exists, but isn't that what ec2-...
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0answers
117 views

Persistence of a PostgreSQL visibility map through RDS snapshot and restore

I have a pretty huge (1,2 TB) DB on a big RDS PostgreSQL 9.6.1 instance (db.m4.4xlarge). The DB is static (no on-line transactions) and we are testing performance of scripts (mainly analytical queries)...
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1answer
77 views

Questions Concerning Database Snapshots

One of our divisions is running SQL Server 2012 SP1 Enterprise edition for no particular reason (I know, I know... the decision was made before my time and they are resistant to change). What I'm ...
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1answer
253 views

Database ID of a non-existent database - time-out waiting for buffer latch on page appearing in error log

Background: I've recently started at a new shop with lots of databases in various states. I arrived this morning (having just been added to the SQL DBA mailing group) to find an email about the ...
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2answers
797 views

Can Sql Server Backups be replaced by a netapp SnapManager?

In the process of getting some new magic and high speed SAN devices I was told by those crazy magic-SAN-things-administrating IT people that it will be obsolete to perform ANY Sql-Server Backups in ...
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1answer
733 views

EXPDP snapshot too old live monitoring

The likely errors that raises "snapshot too old"s during datapump export are well documented all over the internet such as : undo_retention parameter being too short redo logs groups are too small or ...
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1answer
172 views

Creat db snapshot of a db in restoring state

Is it possible to create a snapshot of a SQL db that is in a restoring state?
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1answer
168 views

Deploying and rolling back changes in an Availability Group database

I'm looking for a solution or workflow. Here's how I used to do database deploys when using a stand-alone server: Create a snapshot of the production database Deploy changes Verify that the deploy ...
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3answers
2k views

Backup standby database using LVM snapshot

Objective: Backup standby database (synchronous streaming replication) using LVM snapshot. When running pg_start_backup: postgres=# SELECT pg_start_backup('label'); ERROR: recovery is in progress ...
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1answer
33 views

Can I use SNAPSHOT for large catalogs?

I've been reading about Snapshots, and it says you can send small catalogs lets say, in a monthly routine. I liked the Idea and i will start to study about this, but can I use snapshot for large ...
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112 views

Retrieve data from OLTP MySQL to SQL Server DWH using SSIS

I'm running a BI solution currently reading data from an OLTP SQL Server 2008 to a SQL Server 2012 data warehouse. The ETL phase is implemented with SSIS and runs twice a day. This phase relies on a ...
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2answers
2k views

SQL Server database snapshots for integration testing

I am trying to define a way of working with a test database (in SQL Server) for our integration testing. My idea was to do these steps at the launch of the integration test assembly: create a ...
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1answer
628 views

Why does creating database snapshot fail unless user is db_owner or sysadmin? MSDN suggests it should work

MSDN suggests that CREATE DATABASE permissions are all that is necessary to create a snapshot. Any user who can create a database can create a database snapshot; however, to create a snapshot of ...
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1answer
35 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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3answers
454 views

how can database snapshot to be used to recover data?

I know the logic behind database snapshot and how it works. But my problem is how can database snapshot to be used to recover data? can we take a backup of database snapshot and restore it in a new ...
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2answers
1k views

Why database snapshot creation is faster than normal database backups?

Could you tell me any reason why creation of database snapshot is faster than database normal database backups in MS SQL server
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1answer
115 views

Get a listing of snapshot data files

I need to programmatically drop a database with all of its snapshots and then recreate the database and create a new snapshot. I'm having trouble locating where the snapshot files are located from ...
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786 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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1answer
639 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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107 views

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 ...