Questions tagged [amazon-rds-aurora]

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AWS Aurora MySQL Serverless CPU utilization is growing for unknown reason

We have been using Aurora serverless databases in staging and production environments for a few months now, and find the CPU remains in the range 15-20% almost all the time. However in the past week ...
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25 views

mysql/aurora not immediately seeing results of committed transactions

In a system running against an AWS aurora-mysql database, the following (obviously extremely simplified) code runs. It's a highly concurrent system, multiple threads, multiple connections to db. The ...
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18 views

Why and When the pg_stat_activity's most of the columns are null?

Recently, I have noticed that when I query the pg_stat_activity for few users most of the columns are [null] (pgAdmin 4) in the result. Only thing I can see is datid, datname, pid, usesysid, usename,...
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16 views

AWS DMS: Table Mapping?

We are moving from SQL Server to AuroraDB (mySQL). Both our source database (SQL Server) and our target (AuroraDB) are on AWS RDS so we are naturally using DMS for the migration. We make heavy use ...
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31 views

AWS aurora mysql is restarted unexpectedly

In our system one of aurora mysql instances was't available for short period. because this instance suddenly restarted at 08/14/2019 3:56JST. we already checked error log for aurora. but i found ...
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46 views

Hints on bulk loading 3.6 billion rows to InnoDB on Aurora MySQL

everyone! I'm struggling for a week to bulk load 3.6 billion rows to an InnoDB table on Aurora MySQL 5.6.10a. This table has one FK to a "Main" table and has 12 columns. The first 1.4 billion were ...
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130 views

Migration from MySQL 5.7.10 to Aurora (MySQL)-5.6.10a Serverless and switching sql_mode

I am looking into migrating my locally managed MySQL 5.7.10 database to Amazon Aurora Serverless. I am tired of managing my database manually and I would like to use an auto-scaling feature of Aurora ...
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15 views

Can I use EBS data directory path as temp tablespace in ADS Aurora Postgresql?

I am having issue with RDS Aurora Postgresql's root storage (which is used for Temp files/tables and Logs) since its basically 2*PhysicalMemory. I thought of creating a new tablespace in data storage ...
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74 views

RDS Aurora postgres temp files removal

A report application generates lots of temp files in RDS aurora postgresql. Temp files loggings shows average 20G files being generated for each query execution. But the query execution not taking ...
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24 views

What database should I use locally if I'm going to use Aurora Serverless?

I'm planning to use Aurora Serverless in QA/PROD and then a docker container for running a compatible engine locally. Should I use MariaDB 10.0 or MySQL 5.6? Database need is low, we're not doing ...
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184 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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44 views

Does Aurora Postgres automatically kill process if replication lag is too high?

I have aurora postgres (9.6) master and reader. Time to time its getting swapped and message shows server process(PID 111111) was terminated by signal 9: Killed I didn't kill anything, and suspecting ...
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32 views

Weird Behaviour Aurora Mysql queries Timing out after DB keeps running for a while

I am shifting my database to Aurora Cluster MySQL. For testing, I have created a small sample data (2 GB DB size). I am connecting to the cluster writer endpoint. Connections and queries work fine for ...
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123 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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55 views

amazon aurora read_only {TrueIfReplica}

I have {TrueIfReplica} for read_only in parameter group for Aurora. I setup my aurora to replicate from an external master but it is 0 when I look at read_only in show variables. Why is this?
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79 views

Aurora MySql 5.7 killed processes doesn't die

We are using AWS Aurora MySQL and we recently moved to MySQL 5.7. After moving to this version, we started seeing issues with DDL statements. The processes which are running these statements just ...
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141 views

Finding Aurora functions (PostgreSQL)

On Amazon Aurora in the PostgreSQL (10) flavor there is a function names aurora_replica_status() documented. I can use the function and look at its definition: postgres=> select * from ...
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573 views

Error log flooding with aborted connections (Aurora 2.03 - MySQL 5.7.12)

Here's some contextual information: I have a multi-tenant, WordPress MU installation running on Elastic Beanstalk, scaled up to 2 instances minimum. These are connected to the RDS database and are ...
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321 views

Multi-AZ failover - replica still read only after failover

Setup: I have a single RDS cluster. This cluster has two instances, one in each zone. Naturally, one "replication role" reader and one writer. What happened: I manually triggered a failover of the ...
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37 views

Aurora PostgreSQL fail over process

Aurora PostgreSQL: How the process work on failover,I have a primary DB-prod for transaction database and read replica for reporting. where reporting will be pointed if primary fail. similar question ...
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1answer
197 views

Can AWS Aurora High Availability allow different Schema on Replicas?

Our company is thinking of migrating from SQL Server to Amazon AuroraDB. In SQL Server, there are AlwaysOn and Transactional Replication - two different things. AlwaysOn is utilized more for ...