Questions tagged [migration]

the process of moving databases or data from one place to another

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Migration DB postgresql in windows to Red Hat(linux)

I would like to know how I could migrate a postgresql database which is currently in a Windows operating system to Red Hat? I'm a beginner and I don't know where to start. Thanks .
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2answers
814 views

Loop through tables or copy paste

I have to do a migration where I should retrieve data from 40 Access tables, which should contain several of the same columns (but not all, the schemas are different). To make it simpler, I used SSMA ...
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2answers
476 views

Partial copy of huge database

I have started working in a project which has a big database, around 300GB. For security reasons I can not access database from my local web app. So I need to copy last 100,000 from each table. To ...
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18 views

Database migration assistant for Unicode by Oracle is not responding after using schedule column option

I have posted this issue on Oracle Community but I would like to post it on here so that I will have more opinions on this issue. Issue: I am facing an issue with DMU 19.1 which is the DMU ...
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12 views

Best way to archive old data from SQL Azure?

I have an app that stores event data. We use SQL Azure. Right now it's very expensive. Over $800/month to host. Once the event is over, I want to move the data to a DB that has a lower cost. Thus this ...
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What are the risks if you rename a server that hosts a named instance of SQL Server (2005) and skip updating the system metadata?

My apologies as this is the last SQL 2005 instance we have and it's pretty urgent or I wouldn't go through all this trouble asking. Questions What is the risk to leave things as they currently are, ...
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1answer
56 views

How to migrate Oracle Database to MariaDB? [closed]

Currently we have a server on Oracle version 18. We are planning to migrate to MariaDB. Is there any free service provided by MariaDB or oracle that helps migrate a database from Oracle to MariaDB?
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3answers
2k views

Live migrate a database from one instance to another with zero/minimal downtime

There are 2 MySQL instances: MA and MB. They are completely separate from each other (no replication between them). Each instance contains multiple databases: MA serves db1, db2 MB serves db3, db4 I ...
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1answer
52 views

Is this database migration in web application development? [closed]

I am trying to understand "database migration". https://en.wikipedia.org/wiki/Schema_migration says In software engineering, schema migration (also database migration, database change management) ...
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2answers
65 views

What's the best way to migrate a database to a server of a lower SQL version?

I have Database A on SQL Server 1 that is SQL Server version 2016. I need to migrate it to Server 2 that is SQL Server version 2012. Database A is pretty small, only about 5 GB total. I don't think ...
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1answer
47 views

How to daily copy selected data from MySQL and PostgreSQL servers to another PostgreSQL server

I have two source servers, a MySQL 5.7 and a PostgreSQL 9.6, respectively. I would like to daily update some tables from each source to another target PostgreSQL 11 server (via a cron-job). On the ...
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1answer
343 views

mysql to mongodb migration

I have table, with around 125 million records in MySql. I want to move it to mongodb. What would be the best approach to migrate this huge table to mongodb? I was thinking to fetch one by one row ...
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1answer
724 views

how to replace dbms_reputil.from_remote in oracle 12.2.0.1 since All objects removed except REPLICATION_IS_ON, _OFF and _ON

how to replace dbms_reputil.from_remote in oracle 12.2.0.1 since All objects removed except REPLICATION_IS_ON, _OFF and _ON
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1answer
21 views

Migrate MySQL to another partition in same server

I have a instance of MySQL in a local server. To improve the performance, I put a SSD just for MySQL. Now I need migrate the MySQL instance, with my databse (a data has 25GB) for the SSD. What the ...
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1answer
50 views

PostgreSQL vs Oracle double

More of rant, than a question, but maybe someone would explain -- why PostgreSQL migration wiki states that FLOAT (Oracle) is REAL (Postgres) and DOUBLE is DOUBLE PRECISION when in PostgreSQL ...
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5answers
126k views

How to solve UTF8 invalid byte sequence copy errors on a restore, when the source database is encoded in UTF8?

I was given the task to migrate a PostgreSQL 8.2.x database to another server. To do this I'm using the pgAdmin 1.12.2 (on Ubuntu 11.04 by the way) and using the Backup and Restore using the custom/...
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1answer
23 views

postgresql logical replication — subscriber size discrepancy

I have a postgres 11 database in Amazon RDS with a little over 2 TB data in it whose tables have incrementing integer ids that are nearing exhaustion. I've been vetting using logical replication to ...
16
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2answers
49k views

Backup/Restore Users/Passwords/Privileges

I am moving from one server to another and I want to backup all databases + users/privileges/passwords from my MySQL Server. I found to backup a database using mysqldump, but I cannot figure out, how ...
3
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1answer
217 views

Upgrade and migrate SQL Server 2014 AlwaysOn AGs to SQL Server 2016, using the existing WSFC name

Here are the components: WSFC Name: SQLPROD1 Existing Nodes in this "cluster": SQL2014OnSite and SQL2014OffSite New Nodes to be added (?) to SQLPROD1: SQL2016OnSite and SQL2016OffSite All 4 servers ...
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1answer
2k views

Error Calling Python module function DbMySQLFE.connect

Migrating a database from SqlServer to Mysql using "MySQL WorkBench 6.3 CE" using ODBC data source as default methode to use to connect to the RDBMS. -> Source Selection Test connection is Successful ...
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3answers
4k views

How to restore a pg_dumpall dump without CREATE INDEX?

I am attempting to migrate from Postgres 9.6 to 10.3 and during the restore each index is recreated one by one - this is a problem. So far I thought pg_dumpall is a good option. pg_dumpall -U ...
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3answers
76 views

From MySQL to MariaDB : bad performances issue with MyISAM tables

I'm currently migrating a Debian 6 MySQL server (5.1.73) to a fresh new Debian 10 MariaDB server (10.3.18). Please note that I'm not a database expert. All tables are under MyISAM engine storage, for ...
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1answer
48 views

How to migrate SQL Server 2014 to SQL Server 2019 on Linux using AG [closed]

I would like to migrate SQL Server 2014 on Windows to SQL Server 2019 on Linux using while running AG. Is there an option to Add the SQL Server 2019 to the same AG and once the time comes gracefully ...
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1answer
246 views

mysql database migration of schemas with updated data and structures

I am a newbie with MySQL database dumps and am currently trying to work with data migration between a source schema and a target schema. Assuming the source schema is defined by (...
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1answer
159 views

How to install Distributed Replay (dreplay.exe) for SQL Server 2017

In SQL Server 2014, dreplay.exe was available under "Management Tools – Basic" feature. However, in SQL Server 2017 that feature no longer exists (Enterprise edition) and it doesn't come with SSMS ...
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1answer
256 views

Oracle Database Migration using Oracle SQL Developer

I've 2 Oracle database on different machines [I connect to them via oracle SQL Developer Now I am planning to have machine 3 which will consolidate both Oracle instances on one new node Question is ...
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1answer
294 views

SSRS 2008 to 2014 Migration Excel Export error

We are working on migrating our SSRS from SQL Server 2008 to SQL Server 2014. After brining the reports over I have a set of reports that will execute just fine but when I try to perform a standard ...
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1answer
147 views

Why could pgloader fail with 'undocumented reason' while migrating large MySQL database to PostgreSQL?

The database I would like to import is approximately 55GB in binary format, about 36 GB exported by mysqldump. But as we know even the postgres compatible mysqldump is not 100% compatible, so I'm ...
35
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5answers
6k views

Can I write portable SQL statements?

I am wondering if it is possible to write SQL statements that are 100% interoperable with most or all databases including: MariaDB/MySQL/Percona Postgres Microsoft SQL Oracle SQLite (Eg, can I just ...
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1answer
111 views

Issues regarding phpMyAdmin - character set

I'm trying to migrate a Wordpress site from one server to another. Everything is going fine apart from the database migration. I have my database 'A', and using phpMyAdmin I am attempting to export ...
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2answers
424 views

Side By Side Upgrade and Migration from 2008 to 2016

Side By Side Upgrade and Migration from 2008 to 2016 Old Server Name Test1 New Server Name Test1 Default Instance Test 1 My question is when the new server be named as the old one 'Test1" and it ...
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1answer
107 views

MySQL DB Migration from on-premises to AWS through replication

I am having a production MySQL server with set of 20 databases in on-premises server. Now I require to migrate few databases from production server to AWS RDS without disturbing other databases in one-...
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1answer
16 views

Fail to copy all PostgreSQL databases between servers although there is no error message

I want to copy all databases from PostgreSQL 9.3 on Server-1 (Windows 7) to an empty PostgreSQL 12.0 on Server-2 (Windows Server 2012 R2). The steps are as follows: On Server-1: C:\Program Files\...
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1answer
271 views

Migrating Oracle Views to SQL Server

In the process of retiring an Oracle 11g host for an HRIS database, I've been asked to migrate as many assets as possible to a SQL Server 2016 instance for read-only archival. The volume of table ...
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1answer
27 views

Migrate servers involved in replication

We are planning to migrate two servers with MSSQL 2012 servers with configured transactional replication. New servers will have new names, ip addresses and MSSQL 2014. Subscriber is used for reporting ...
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2answers
1k views

Migrate replication from SQL Server 2008 R2 to SQL Server 2016 - Old to new hardware

I will be working on a project shortly that would involve moving the replicated databases off of old to the new SQL Server instance. I haven't done this in the past so I don't have much knowledge ...
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2answers
977 views

Cloning the database to another server with raw data files

I'm trying to clone the database of server 1 to server 2 with raw data files. I'm using Linux 7 and Oracle 11g R2. I have the instance running with same SID in Server 2 but file structure is different....
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1answer
1k views

PostgreSQL to MySQL migration to use database for WordPress site - how to's?

I have a complex issue to solve, related to database migration. I have a website full of news to migrate that is currently based on a PostgreSQL database and written in PHP, without a CMS. I have a ...
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2answers
4k views

MySQL data transfer to different schema

We have two servers: one for the developer (me) and one for the tester. While working on the app, I sometimes make little changes in tables's schemas. (Like a new field, or a field type) I'm trying ...
3
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1answer
127 views

Converting a graph database schema to a relational database schema

I currently am using a graph database and am considering moving off of it to a relational database management system like PostgreSQL. My concern is that I have lots of relationships between ...
2
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1answer
36 views

Is it possible to migrate data from a shard MongoDB to a non-shard MongoDB with dump

Question: I have a shard mongo cluster and I want to migrate data from this cluster to a one node mongo instance. So I want to know is it possible to use dump/restore? I use pymongo and Django ...
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1answer
417 views

Missing Oracle Schema in SSMA Object Explorer

We are currently working on a project to move all of our disparate DBs (MySQL, Oracle, older versions of MS SQL) to SQL Server 2014. So far, pretty much everything has gone smoothly, however, there is ...
2
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2answers
124 views

How to Exclude Foreign Keys during Publish action in sqlpackage

I am trying to publish a .dacpac extract to a target database, I want to exclude just the foreign key constraints in all the tables. After going through the ExcludeObjectTypes options I do not find a ...
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2answers
50 views

Migrate MySQL to MSSQL with views

I have one MySQL database and I want to migrate it with data to MSSQL. I have tried a few tools including MS SQL server Import and Export wizard, DataLoader, ESF Database migration toolkit, mysqldump ...
0
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1answer
111 views

Migration Wizard Offline SQL Server to Oracle, before Move Data, directory Data is empty

I'm migrating data that be in SQL Server to Oracle I'm doing it Offline, I generated .ocp, I ran the OMWB_OFFLINE_CAPTURE.bat, I passed the parameters and generated two directories, one called Master ...
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3answers
579 views

Move large mysql table data from one server to another

I have a table to which millions of data are inserted every day. As the table size grows more than 10 GB, I have issues with the performance of server in fetching apis and generating reports, which ...
2
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1answer
89 views

How to do a SQL Server 2016 continuous upgrade

I watched this channel9 video, and it mentioned you could now do a continuous upgrade to MS SQL Server. This allows you have a side by side install and it will keep the databases in sync until you ...
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1answer
253 views

Regular data transfer from SQL Server to MySQL

Our company uses an application with a SQL Server database where we store all of our Project Item data. Our company's Portal Website uses a MySQL database that holds other Project information (...
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0answers
20 views

Applying batch of row changes (delete) MySQL Replication Stuck

I am using Master Slave replication for master and slave . Master Configuration 64 GB RAM 2 TB SSD Slave Configuration : 16 GB RAM 2 TB SSD My database size is 750 GB. When i configured ...
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2answers
283 views

Manipulate SQL statement before execution on server

Our databases are on SQL Server 2000. We are migrating to SQL Server 2008 R2. We want to update the compatibility level to 100. But the join operator \*= and =\* are no more supported with that ...

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