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1 answer
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Is it possible to query Oracle system tables (DBA_USERS,dba_role_privs,dba_tab_privs) Using Db_link?

Is it possible to query Oracle system tables (DBA_USERS,dba_role_privs,dba_tab_privs) Using Db_link? I am getting ORA-00942: table or view does not exist when tried to query the same.
Arun's user avatar
  • 13
1 vote
1 answer
1k views

AWS RDS MySQL upgrade from 5.7 to 8 failing due to ROW_FORMAT

We need to upgrade our DB to version 8, but we're getting an error in the migration log that's preventing us from upgrading. Creating indexes larger than 767 bytes on tables with redundant row format ...
user avatar
0 votes
0 answers
476 views

Fastest way to migrate largish (15 TB) PostgreSQL 11 instance to Aurora 14 in AWS

We have an AWS RDS PostgreSQL 11 cluster (currently version 11.13), in which we have a few databases and some 1500 tables. The RDS cluster is of size "db.r5.xlarge", with 4 vCPUs, 32 GB RAM ...
Robert's user avatar
  • 125
0 votes
1 answer
114 views

Do MySQL limitations apply to MariaDB as well on AWS RDS

I am thinking of migrating MariaDB 10.3.13 to RDS, I want to do an analysis of what limitation can be caused by migrating to RDS, I could find no documentation by AWS for MariaDB for issues and ...
DB guy's user avatar
  • 69
0 votes
3 answers
136 views

Is there performance loss in out of sequence inserted rows (MySQL InnoDB)

I am trying to migrate from a MySQL AWS RDS instance with a huge SSD and too much excess space down to a small one, and data migration is the only method. There are four tables in the range of 330GB-...
Shahid Thaika's user avatar
0 votes
1 answer
59 views

Migrate Oracle 12c to 18c in AWS RDS

Currently we have an Amazon RDS Oracle 12c instance and we need to upgrade it to Oracle 18c in a new RDS instance. What is the correct approach to do this? Can we set up an 18c instance staright ...
thanuja's user avatar
  • 147
4 votes
1 answer
885 views

Migrate large (200GB) mysql databases to new hosts with as little downtime as possible

My question is about migrating large amounts of MySQL data with as little downtime as possible. I have 3 MySQL databases that need to be moved from one RDS instance inside a VPC into a brand new AWS ...
outrunthewolf's user avatar
0 votes
1 answer
576 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-...
Phanindra's user avatar
  • 1,007
0 votes
1 answer
86 views

MySQL how to migrate to new server without data lost?

I'm using AWS RDS, with 1 master & 1 slave. Just now I alter 1 of the table and hangup halfway, so I force stop the process. Now the database got some problem. Let say I wanted to instantiate a ...
Js Lim's user avatar
  • 121
9 votes
2 answers
4k views

Postgres 9.4 wal_level=logical increases disk space

I am trying to use the AWS Database Migration Service to migrate data from an RDS Postgres instance to an Aurora MySQL instance. Database Migration Service requires the wal_level to be set as logical ...
Aravindan R's user avatar
1 vote
1 answer
144 views

Migrating PostgreSQL DB from AWS to Alibaba Cloud

I'm migrating PostgreSQL RDS instance from AWS located in Frankfurt to the RDS instance in Alibaba Cloud also located in Frankfurt. I use Data Transmission tool from Alibaba Cloud. It connects both DB ...
Nikita Zavyalov's user avatar
1 vote
1 answer
2k views

Moving a PostgreSQL database to a different AWS RDS instance

I have an AWS RDS instance with multiple PostgreSQL databases in there including an application database and a monitoring database. The problem is that the monitoring database is consuming lots of ...
jcollado's user avatar
  • 111
-1 votes
1 answer
518 views

Move data chunk from table with 200+million rows to a new table MySQL

Our DB is hosted in AWS MySQL RDS. The data is such that each company that signs up gets its own set of tables which then receive enormous amount of data in them. Currently we want to move a chunk of ...
Asad M's user avatar
  • 1
2 votes
1 answer
466 views

Why is my dev server faster than a much more powerful RDS?

I'm running a huge data migration. Probably ~100 million rows total across a few dozen tables. There is a lot of reformatting. About 50% of it is done through PHP while the rest uses INSERT INTO... ...
andrewtweber's user avatar
0 votes
1 answer
866 views

How long will it take to migrate a 5 GB Database to Amazon RDS [closed]

I just need an estimation. How long will / can it take to move a 5 GB big database from an external source to amazon RDS. What is best practise to do it? I just moved succesfully a few days ago a ...
Roman's user avatar
  • 103
1 vote
2 answers
774 views

SQL Azure Migration Wizard - Duplicate Primary Key

Just did a test at migrating a 120gb database onto RDS using SQL Azure Migration Wizard Because we can't afford any downtime for "just" a test we ran the tool on the live database (meaning ...
Johann's user avatar
  • 175
1 vote
2 answers
3k views

How to migrate postgreSQL on EC2 instance to AWS RDS?

I have a large PostgreSQL DB (around 100GB) which is on EC2. I want to migrate it to RDS. How can I achieve this with minimal downtime?
IshuVarsh's user avatar
2 votes
1 answer
12k views

How can I synchronize data between two RDS MySQL databases

I have 2 Amazon RDS MySQL instances, one is MySql v5.5 and the new one is 5.6. I want to upgrade the 5.5 to the 5.6 but you cannot do upgrades at this time, so we are trying to migrate the data. I ...
John Hamman's user avatar
0 votes
1 answer
285 views

Looking for suggestions to Migrate Amazon RDS Large Instance to non-amazon host - Live

We have an Amazon RDS Large instance with a database of about 20GB that needs to be migrated without having to take our website down or minimize downtime to less than a couple of hours. And I am ...
John Hamman's user avatar
4 votes
1 answer
930 views

Migrating development and production databases to AWS

After careful thinking and asking on meta.stackoverflow, I'm posting this question on the DBA site. If anyone thinks this question should be on serverfault or any other site, feel free to close and ...
Yaroslav's user avatar
  • 2,837