For my GitHub MaxiBug project, a multi-user version of MiniBug, I am trying to create a free Heroku Postgres database. I don't want to install any local Heroku software and am only interested in an online Postgres database.
This along the lines of this C# Corner article https://www.c-sharpcorner.com/article/configuration-postgresql-database-on-heroku/
Creating a database works, but I can't seem to create any tables using the "Dataclips" section, not even after using:
set transaction read write;
CREATE TABLE temp( [fields] );
After searching the internet I found answers that mention the "Credentials" tab, however I can't find a "Credentials" tab anywhere on Heroku.
Related
I would be happy to get your help / feedback re data load.
Goal:
Load source data from a Postgres database, which is located in GCP project A to another Postgres database, which is located in GCP project B.
Challenge:
Get a connection (I have an IAM account with sufficient rights to run a COPY TO / COPY FROM command) to the Postgres DB in GCP Project A and copy the table either to a CSV or create a dump that can be used in order to be inserted to another Postgres DB in GCP Project B.
How do I connect to the database (e.g. if I create a key, where shall I store the json keyfile and would that approach even be feasible?) with this IAM email account?
Other ways I've researched were to use psycopg2 (thus I could use the function cursor.copy_expert (which doesn’t need any superuser right or Postgres user credentials and copy the data), but I didn’t succeed in connecting to the database with psycopg2 due to challenges with cloud proxy.
Another idea was to use pg_dump or gcloud sql export csv.
I would be curious if some of you were facing a similar challenge and how did you solve it and what might be the best way/practice
You can have a try out database migration service. You can set up a continuous migration configuration and use Cloud SQL for PostgreSQL.
Hello after a lot of searching I've come to these solutions:
If you have continuous copy, you need to use the database migration service, check this documentation.
If you have one shot copy:
you can restore your instance, see the bottom page of this documentation
you can create a bucket and backup your instance on it, then import it from the other project
I have a rails app on heroku that is using a Postgre database. My database has > 40 tables and > 10,000 rows. I would like to delete a lot of data, but it would be much easier if I was able to view and interact with it in a GUI table. I can access my data in rails console, but it's taking too long.
pgweb is a great cross-platform GUI, and it's easy to connect to your Heroku Postgres when launching from the command line.
I installed via Homebrew on a Mac (brew install pgweb), but instructions for other platforms are listed on the site. Here's how I launch pgweb connected to a Heroku Postgres DB:
heroku config:get DATABASE_URL | xargs pgweb --url
And if you want to connect to your localhost:
pgweb --host localhost
I'm a little late here, but this may help someone else who stumbles across this thread...
If you go to your Heroku app's dashboard (through the website) > settings > "Reveal Config Vars" > DATABASE_URL, and paste that URL into the browser.
I use TablePlus for database management, when I paste the link into the browser it asks if it can open TablePlus and then I can edit my production database in real time just like I would in development.
I'm not sure what pasting the URL into the browser will do if you don't have TablePlus. I assume it will request to open any other SQL management app you might have.
As slumdog wrote in the comment to your question, you can use pgAdmin, which comes with your local Postgres installation.
This article explains how to connect your remote heroku db with pgAdmin, using heroku credentials: https://medium.com/#vapurrmaid/getting-started-with-heroku-postgres-and-pgadmin-run-on-part-2-90d9499ed8fb
From the article:
"pgAdmin is a GUI for postgresql databases that can be used to access and modify databases that not only exist locally, but also remotely. For a fresh install of pgAdmin, the dashboard likely contains only one server. This is your local server...
We have to configure a new remote server with its credentials.
right click server(s) > create > server …
Fill out the following:
Name: This is solely for you. Name it whatever you want, I chose ‘Heroku-Run — On’
Under the connection tab: hostname/address. If you go back to your datastores ‘reveal credentials’, this is the host credential. It should look like --**...amazonaws.com
Keep the port at 5432, unless your credentials list otherwise
Maintenance database — this is the database field in the credentials
Username — this is the user field in the credentials
Password — the password field in the credentials. I highly advise checking save password so that you don’t have to copypasta this every time you want to connect.
In the SSL tab, mark SSL mode as require
At this point, if we were to hit ‘save’ (please don’t), something very strange would happen. You’d see hundreds if not thousands of databases appear in pgAdmin. This has to do with how Heroku configures their servers. You’ll still only have access to your specific database, not those of others. In order to avoid parsing so many databases, we have to white list only those databases we care about.
go to the Advanced tab and under db restriction copy the database name (it’s the same value as the Maintenance database field filled earlier)."
Article contains other usefull guidelines and screenshots.
Try GUI of DBWeaver.
https://dbeaver.io/
Download it, after that you can connect your heroku postgres using Database Credentials data.
You can use Heroku's hosted DB viewer on the Overview pane of your dashboard:
Create and click the Dataclip:
Dataclip GUI is fairly easy to use, we can type and customize SQL queries at the top etc.
I am unable to complete Moodle installation. I am hosting the site on NearlyFreeSpeech and using PHP 5.6. Moodle doesnt seem to be able to connect to the database and write any tables.
I created the moodledata folder in /protected/moodledata and moodle is in /public/moodle
I receive this error after accepting the terms and conditions.
Error reading from database
More information about this error
It is usually not possible to recover from errors triggered during installation, you may need to create a new database or use a different database prefix if you want to retry the installation.
Normally my first instinct would point to the config.php file but if it's getting as far as telling you that a connection is established with the database but there's a read error ("Error reading from database"), then that generally means your config.php file is probably healthy, but your database is not.
Firstly, check that you're using one of the following database servers that Moodle is compatible with (minimum version)
PostgreSQL 9.1
MySQL 5.5.31
MariaDB 5.5.31
Microsoft SQL Server 2008
Oracle Database 10.2
source.
Secondly, ensure that the user assigned to access your database in config.php has ALL PRIVILEGES set on that database.
Moving on... If this is a fresh install and you have no data to lose, your best bet is to start with a clean database.
You can either delete your existing database and set up a new one, or you can drop all tables from your existing database.
Option 1. Delete your existing database.
Delete your config.php file
Jump to phpMyAdmin (from the 'actions' tab on the MySQL process page)
Click on "Databases"
Delete your existing database
Hit "Create database" to generate a fresh, empty database
Go to http://your.url/install.php and follow the instructions for a fresh install.
Option 2. Clear your existing database
Jump to phpMyAdmin and run the following query:
DECLARE #sql NVARCHAR(max)=''
SELECT #sql += ' Drop table '+TABLE_SCHEMA+'.'+ TABLE_NAME
FROM INFORMATION_SCHEMA.TABLES
WHERE TABLE_TYPE = 'BASE TABLE'
Exec Sp_executesql #sql
source.
Then go to http://your.url/install.php and follow the instructions for a fresh install.
If you managed to start with a fresh database and you get the same error, please ensure that you have all the prerequisites available from your host. You can find a list of Moodle PHP requirements here.
The only time I've seen that error is when using the wrong MySQL version. Eg currently MySQL 5.5 is supported but if you have 5.1 you would get that error.
Source: http://realtechtalk.com/moodle_install_error_Error_reading_from_database_-2072-articles
Hi i'm totally new to Rails and Postgres + Heroku. I've developed a web and just like PHP you can see what are the records user has entered and key in with phpMyAdmin however what about Rails? How can I see the records?
I've uploaded the app to Heroku so now I wanna see my Production's data. What is more is that my test and development data can't be seen in PGAdmin as well.
You can connect to Heroku Postgres just as you can a local database.
Go to https://postgres.heroku.com/databases, select the database, and it will display the connection settings. On the far right of the page there is an icon with two arrows on it, and selecting it will give you the connection string for various technologies, including a psql command line you can just copy and paste to a terminal.
It will look something like:
psql "dbname=ddgadagin host=ec2-107-12-168-211.compute-1.amazonaws.com user=dgddgargarg password=huu55ihfwqreergr port=5432 sslmode=require"
I am trying to update my database from Dev to Basic on heroku. I followed all the steps mentioned here but after heroku pg:promote HEROKU_POSTGRESQL_WHATEVER I wanted to check if my database had everything, so I just went and looked on the website and for the basic version it says
![Data Size 0 B
Tables 0
PG Version ?][1]
The basic
While it should be
I am not sure what went wrong.
The table and database size is computed via an asynchronous process. This can sometimes take a little while to show. If you've recently migrated then you should try connecting with heroku pg:psql then running:
VACUUM ANALYZE;
This will ensure Postgres has proper stastics then reports the tables correctly for when Heroku asks about the table size. Additionally you could manually explore your database once connected to ensure your data is there:
\dt --- to display tables
SELECT * FROM foo; --- to ensure data is there on a specific table