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Questions tagged [amazon-rds]

Amazon Relational Database Service is a web service that makes it easy to set up, operate, and scale a relational database in the cloud.

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AWS Aurora Severless [closed]

I am building a new app that I plan to put on the App stores. I was thinking of using the AWS Aurora Serverless. Since this is relatively new and I wanted to ask what have some of the experiences of ...
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0answers
21 views

Database choices [closed]

I am building an app that allows people to share items with other people in the community. I wanted to use AWS as my platform. My idea was to use react Native for the app. AWS Cognito for the ...
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1answer
20 views

Analyzing differences between AWS c5 Instances for MySQL Performance [closed]

Goal: To Identify, Can we have a horizontal scaling with 2 of c5/m5 4x instances by replacing single c5.9x instance at the same cost. Problem Statement: In our test scenario c5.4x and c5.9x shouldn't ...
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1answer
37 views

Amazon RDS MySQL Troubleshooting High Sessions

I just migrated my forums application to AWS. I'm in the middle of tweaking things for performance and I noticed that the number of sessions for my RDS instance (t3.large) is consistently exceeding 2....
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1answer
26 views

How to sync easily between a master database from Google Cloud SQL and a master database from Amazon RDS

I've created a master - slave (replication) in Google Cloud SQL. I've also created a master - slave (replication) in Amazon RDS. I want to sync two master MysQL from Google Cloud SQL and Amazon RDS....
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32 views

Lost the DB owner access by mistake

I was trying to delete a user from DB(AWS RDS) which was part of dbowner schema. While removing that user, I gave the ownership of dbowner schema to dbo role. Now I have lost the access to that DB. I ...
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0answers
32 views

Separate login during `Too many connections` in AWS RDS

AWS-RDS does not provide any user with SUPER privilege. As a result, 'too many connections' are made, even the dba is locked out. Nobody can login and kill any sleeping connection. Apart from taking ...
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0answers
16 views

Copying SQL logins and roles into AWS RDS

I am migrating SQL Server 2017 running from EC2 instance to AWS RDS SQL Server. What would be the best approach to migrate logins with SIDS, passwords, server roles, and database roles? I know the ...
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0answers
16 views

MySQL - Granting a user access to view an existing stored procedure [duplicate]

I have a user that has been granted ALL schema privileges in a MySQL database however they are unable to view existing stored procedures that another user owns. How do you grant a users the ability ...
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1answer
32 views

AWS RDS (PostgreSQL) - Master user lost all privileges after upgrading from v9.6 to v10.6-R1

I just upgraded my AWS RDS DB instance from Postgresql v9.6 to v10.6-R1. I did this manually using the "Modify" tab in the Databases section under the Dashboard. Immediately afterwards, as the master ...
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0answers
366 views

UPDATE STATISTICS options fail in Amazon RDS SQL Server

In Amazon RDS SQL Server (any version/edition), create a temp table and update statistics on it. This works fine: IF OBJECT_ID('tempdb..#t') IS NOT NULL DROP TABLE #t; GO CREATE TABLE #t (id INT ...
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0answers
83 views

how to dump mysql schema without keys and without constraint ? and keep all of them to alter afterwards

i am using ubuntu 16.04 and want to dump large schema with hounded of tables from AWS rds, remove all keys and foreign key , load data and then add back the keys , is there any automatic tool that ...
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2answers
71 views

AWS KMS Encryption enable for SQL Server Columns?

Is it possible MSSQL on EC2 with a key in AWS KMS to encrypt columns
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6answers
285 views

MySQL join has drastically worse performance after upgrading from 5.6 to 5.7

I have a fairly straightforward query that has become very slow after upgrading from MySQL 5.6.35 to MySQL 5.7.12 (running on AWS RDS). SELECT DISTINCT Name,d.id,deviceType,issuedBy, description,...
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1answer
52 views

Why is my AWS RDS (postgres) at a high percentage of cpu with no active sessions?

I have two postgres db, prod and dev. Lately, dev has been really slow, so I checked into it, and it appears to be using CPU credits faster than I'm getting them. I could not figure out why, so I ...
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0answers
52 views

MySQL Error seems unfixable: Index column size too large

I'm getting: ERROR 1709 (HY000): Index column size too large. The maximum column size is 767 bytes. There are many questions about this here, I tried many of them. No luck. My context: MySQL 8.0.13 ...
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1answer
50 views

Mysql Out of memory (Needed 536870945 bytes)

I'm trying to import an sql file into aws RDS database the file size is 1.5 GB i'm connecting to the rds from ec2 instance then executing this command "source sqldata.sql" to import it into the rds ...
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1answer
34 views

Is compression used in RDS SQLServer database

I have few Clarification regarding AWS RDS SQL Server. Do we have any compression technique to compress the data loaded into RDS SQL server? Is there any option or parameter to compress the data and ...
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0answers
81 views

Predicting AWS RDS MySQL Instance Performance

I have a small MySQL db running on AWS RDS t2.small instance. So far, the CPU usage has been very predictable based on the traffic from my app. Example: 1000 concurrent users = 15% CPU 2000 ...
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0answers
85 views

AWS RDS Performance Insights not showing SQL Server Queries

I enabled Performance Insights on an existing SQL Server database (Express, if it matters) in AWS RDS. If I look at the database load graph and table I do not see any of the queries I am doing in real ...
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0answers
115 views

MySQL RDS Incompatible Restore while creating read replica

We have multiple m5 generation MySQL RDS instance. The problem we are facing is that while creating read replica for these instances we are repeatedly getting 'incompatible-restore' error. In the ...
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1answer
27 views

Find queries causing a lot of read IO

I'm trying to find the cause of a higher amount of VolumeReadIOPs in our Aurora Postgres instance on AWS. This is what the past 6 weeks look like: I found the cause of the largest period (02/27 to 03/...
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0answers
58 views

How can I install pgtap on rds postgresql?

I am using postgresql 10.7 under AWS RDS. I downloaded pgtap-1.0.0.zip from https://pgxn.org/dist/pgtap/ because I saw an article in AWS forums saying you can just run pgtap.sql yourself. However, ...
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1answer
259 views

Mysql Alter table add column with ALGORITHM=INPLACE, LOCK=NONE

Am running below query Query Alter table dbname.tablename add column column1 varchar(50), add column column2 text , ALGORITHM=INPLACE, LOCK=NONE; It takes more time to execute. Ideally running ...
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1answer
42 views

MySQL RDS - Unable to Kill Hung Queries

I have a MySQL RDS instance that's got 100+ queries all stuck waiting for a table metadata lock. The good news I have permission to kill all of the sessions, and have 0 concern for data loss as this ...
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0answers
29 views

AWS RDS PostgreSQL: Significant query runtime difference between two (identical?) instances

TL;DR: Solution The problem was that one instance hat magnetic storage attached and was therefore significantly slower. Original Question I have two identical AWS RDS PostgreSQL 10.6 databases ...
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1answer
33 views

Oracle AWS package errors when removing user

We are getting the folowing error when attempting to remove a user from our 11g Oracle. a dump from an Amazon DB was (failed) imported, and now we see this. ERROR at line 1: ORA-00604: error occurred ...
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2answers
94 views

MySQL 5.6 @ AWS RDS read IOPS plateaus lower than write IOPS

I have an RDS MySQL 5.6 instance which plateaus ReadIOPS at around 6.5k. My WriteIOPS is most often lower, but sometimes higher than ReadIOPS, but has never entered such a rigid plateau. The disk was ...
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0answers
18 views

Amazon RDS on VMware

I am not sure whether this is the right forum to post my question(sorry if this is not the place). I recently gone through the AWS RDS on VMware offering which is interesting and i have question which ...
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0answers
20 views

2 postgresql identical rds instances and one is significantly slower

I have 2 instances of free tier rds postgresql db.t2.micro on same zone us-west2 region on 2 different accounts, using defaults at creation, Original and Copy. Original is significantly slower than ...
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1answer
110 views

RDS MySQL read replica larger than master

We have a Multi AZ AWS MySQL 5.6.40 server with a matching single AZ read replica. Both have 200GB of storage available. However, the read replica is rapidly running out of free storage space, while ...
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1answer
196 views

Oracle AWS RDS supermaster user cant grant select on some tables

I'm dealing with some sort of issue beyond my Oracle knowledge. A customer wants to execute some queries to detect issues, locks, etc in a Oracle RDS database. I assume this queries needs database ...
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1answer
54 views

Aws RDS cpu Spike to 100% because of running set isolation command and set

My application running with the AWS RDS as a backend. currently i am doing a performance test. While doing that i am seeing RDS cpu usage goes 100% after 20min. While seeing the performance insights ...
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1answer
37 views

Does requiring SSL matter if using AWS RDS and AWS EC2 in a VPC

I have a MySQL RDS DB and am connecting it through an EC2 instance. My RDS isn't publicly accessible, so I think it can only be connected to through my EC2 instances. I see at this link https://...
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0answers
12 views

Does it require to change date values of tables while changing the database timezone

Currently, I am using the rds with timezone UTC. While changing the timezone from UTC to EST, How could i convert the values of date field of all tables of database in EST?
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551 views

CPU usage constantly high after upgrading from Postgres 9.5 to 9.6 to 10.6

I upgraded my RDS instance (db.t2.medium) from Postgres 9.5 to 9.6 couple of days back. Since the upgrade, the CPU usage was almost 100% all the time. This brought down my application. Presuming that ...
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1answer
118 views

How to benchmark disk performance from within SQL Server?

I know of tools such as SQLIO and diskspd to benchmark IO/disk performance, but need something that can be run from the SQL Server instance itself via T-SQL, as I'm working on a Cloud-hosted ...
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1answer
168 views

How to alter system on AWS RDS?

I need to run ALTER SYSTEM SET track_activity_query_size = 16384; So I can see the contents of some long running queries (I can only see the beginning at the default size), but when I try to do ...
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1answer
80 views

Schema replication Postgresql AWS

Is there a way to replicate Postgres Schemas in AWS into one location for reporting purposes? I have 3 postgres databases (up to date with current version) running in AWS that I would like to ...
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0answers
21 views

Sharing read/write resources between connections in an unfair way

I have two applications that connect to a Postgresql database. A read-only application querying tuned MVs A write-only application updating the database and the MVs We only really require that (1) ...
0
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0answers
20 views

Why would PSQL on AWS RDS trigger an unexpected recovery?

Setup AWS RDS db.t2.small Postgres 9.6.3 Conditions - seen in monitoring Free mem 1GB Swap grew up to about 15 MB before the recovery Nothing unstable in any other monitoring Event logs lost not ...
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1answer
242 views

MySQL slave stuck on Applying batch of row changes (write)

I'm using Amazon RDS as a slave for my dedicated MySQL server (running outside of AWS). Replication has been working alright for the past few months, until yesterday when I updated the structure of ...
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1answer
60 views

Issue with Time Zone while migrating MySQL on-premises DB to AWS RDS

I am having MySQL 5.6 database with PST time format in on-premises server. Now we are willing to migrate the database to RDS. For this, we have taken backup from physical server and restored in RDS ...
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0answers
136 views

Amazon RDS SQL server and DBCC Checkdb

New Company and new to Amazon RDS. Several databases have been migrated to the cloud because "everything" is done for us a manager has stated. I have explained standard DBA tasks are still required ...
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1answer
261 views

Adding index only on read replica of MySQL RDS instance

I have created read replica of RDS production database for reporting purposes. Cross-team is using the replica for their use. Consumers of this replica are looking for additional indexes for faster ...
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0answers
26 views

estimating I/O for aurora from current mysql rds instance

If I have the following averages over the last 4 weeks for mysql rds instance db 1 77.7 writes/second, 8.54 reads/second db 2 108 writes second, 8.56 reads/second (2629746 = seconds in a month) ...
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0answers
311 views

Cannot revoke permissions or drop user in PgSQL AWS RDS

I want to drop the user asd from the DB. So, I've got two DBs: foo and bar and the user apparently has dependencies in both. The DBs have been created from the root user postgres, but all tables and ...
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0answers
31 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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0answers
216 views

AWS Aurora Database Corruption

I'm running Aurora Postgres and noticed that metric Maximum Used Transaction IDs is increasing a lot. Trying to manually vacuum the tables that's was not automatically vacuumed lead me to the ...
0
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1answer
47 views

Loss of 20+Gb of space and cannot find out why (amazon mysql rds)

I am trying to figure out why one of my MYSQL RDS DB instances lost 20+GB of storage space and I cannot figure out why. I have 2 RDS instances and am using some queries to compare data + free data ...