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10
votes
3answers
3k views

PostgreSQL Initial Database Size

There are 2 parts to my question. Is there a way of specifying the initial size of a database in PostgreSQL? If there isn't, how do you deal with fragmentation when the database grows over time? I'...
3
votes
2answers
2k views

Find the largest databases on my server

I have several hundred databases running on the same MySQL server. How can I get a list sorted by the size of the databases?
2
votes
1answer
2k views

How to estimate database size needed?

I work on a transaction banking service project, and we need to have a central database to keeping client's info, account info, transaction details, etc. So, how can I estimate the size of database ...
3
votes
2answers
1k views

My database dramatically increased in size. Why?

I found that my database, specifically the USERS tablespace, dramatically increased in size. How can I find what DML operations are performing on the objects located in this tablespace?
15
votes
2answers
7k views

I need to run VACUUM FULL with no available disk space

I have one table that is taking up close to 90% of hd space on our server. I have decided to drop a few columns to free up space. But I need to return the space to the OS. The problem, though, is ...
6
votes
1answer
652 views

Using an RDBMS for querying tens of Terabytes of time-series data?

I stumbled over an algorithmic / data-structures question over on SO, which I'll short quote: (...) opinions regarding best of breed data structures to be used for indexing time-series (aka ...
2
votes
2answers
8k views

Acceptable size for MS Access Database?

I have developed an Access 2010 database. It has three main tables: HOUSES id, address, number_stories, garden, parking, imageAttachments (~1-4 per record), etc..., about 60 fields total ...
1
vote
1answer
256 views

MySQL row length is almost the triple of what I expect

I shamelessly took title and content from this question and adapted it to my similar yet different problem: This is the table I have: CREATE TABLE `test` ( `field1` MEDIUMINT(8) UNSIGNED NOT ...
8
votes
1answer
5k views

MySQL Workbench Database Sizes

I'm trying to find the total size on the hard disk that all of my MySQL Workbench databases are using. Does anyone know of an easy way to figure this out? If nothing else, the default location mysql/...
4
votes
1answer
860 views

What are all the reasons/possibilities that may fail to release disk space occupied by TEMPORARY table?

We're using PostgreSQL v8.2.3. Ours is a web-based application and we're using pgpool-II v 2.0.1 purely for connection pooling (we don't use other features of pgpool like Replication, Load Balancing, ...
2
votes
2answers
830 views

PostgreSQL: Separate tables vs single table to perserve disk space?

I have 2 tables with the below schemas with equal number of rows. When I run the SELECT relname, relpages FROM pg_class ORDER BY relpages DESC command, they show up as 23GB each even though the data ...
1
vote
2answers
694 views

Sizing MySQL Database Servers for Drupal

What are some guidelines to follow when it comes to sizing MySQL Servers? CPUs, RAM, Disk Space, Clock Speeds, etc? We're going to go with either the community edition or the enterprise edition, and ...
5
votes
1answer
696 views

PostgreSQL relation size does not sum up

I have a very large table, with blob fields, called data. I've tried to figure out why it isn't cached well and repeated SELECTs are quite slow: => SELECT pg_size_pretty(pg_total_relation_size('...