The discipline of Operational and Architectural Management of Database Systems.
3
votes
1answer
115 views
Could too many idle connections affect PostgreSQL 9.2 performance?
Some queries on my database server seem to take a long time to respond, and I believe the CPU usage is high. When running ps aux, I see ~250 "idle" connections (which I believe to be too many). I ...
4
votes
1answer
44 views
High amount of Read Misses and Pages To Be Flushed
I am running a mysql database backend for a Moodle installation, and after a few months performance really starts to suffer (Up to 30 seconds for some pages to load). Under investigation in the InnoDB ...
1
vote
0answers
49 views
Database Timeout Error from VB Application
Recently we are receiving so many database timeout error from different servers
we are using vb application -- which will use ODBC connection to connect database - here no problem
when we run the ...
1
vote
1answer
33 views
Adding users to a list and sort by category?
I'm using SQL-Server 2012 and I would like to know how to solve this program.
So:
I want to create a page that allows admins to manage a project, and part of it, would be to add members/employees to ...
0
votes
1answer
66 views
How to deny access to see the logins in a database
I create a login in SQL Server 2008 R2, and when that user connects to a database, it can see all the logins in the security logins. Can I deny access to watch the logins of the database?
0
votes
0answers
39 views
Prices for database administration tools [closed]
What should be the optimum price of an SQL database administration tool with 16 features including backup status review, server and data configurations, server statistics, disk space review, ...
2
votes
0answers
65 views
How to execute a non-table-locking update operation on PostgreSQL? [closed]
Looking for a good way to update the value on a column for all the rows in a database (not huge, but big enough - about 10M records), without locking the whole table, so operations can continue while ...
0
votes
0answers
93 views
DBA group in Linux
When we need to install Oracle database in Linux then the user should be in dba group. What is this group and why the user should be in this group for installing Oracle database. What happens if the ...
1
vote
1answer
76 views
Insert from one row to another using cases
My original table was(being used since 2005):
CREATE TABLE `request` (
`msg` VARCHAR(150) NOT NULL,
`id` VARCHAR(20) NOT NULL,
`ctg` VARCHAR(10) NOT NULL DEFAULT 'misc',
`date` ...
6
votes
1answer
194 views
Role of Database Administrators
I am currently working as an application developer on a project which involves the creation of a new SQL Server database. I am actively working with a group of DBAs who will play some role in the ...
3
votes
1answer
132 views
SQL Server Restore from one database to another
One of our devs backed up a dev database, and then restored it in production. It's a new database for a new app that was deployed last night intentionally to prod.
Now in the backupset table ...
0
votes
2answers
197 views
Secure Linked Server - Non privledged user possible? Registry corruption?
Is it possible to use a non privledged Windows domain account to impersonate itself in a linked server?
And why would it be unable to read the registry for available network protocols?
Overview: ...
1
vote
2answers
222 views
SQL Server 2012, restore database
I am using MS SQL Management Studio 2012 to restore the database from a .bak file. (That file is from the backup of the database on server)
In my new database, the triggers are missing. Why did I ...
3
votes
0answers
25 views
Does avg_query for PgBouncer include update and inserts?
Trying to tune our application and would like to know if the stats data that pgBouncer shows as avg_query, according to the PgBouncer docs on usage:
avg_query
Average query duration in ...
0
votes
0answers
44 views
MySQL Stored Procedure
I am developing a database for an eCommerce website, I have written the stored procedure for the following tables,
user_master,
authentication_master,
country_master,
public_master.
I have ...
0
votes
0answers
73 views
Stored Procedures and Functions in MySQL
I just need to know about Stored Procedures and Functions in MySQL.
While I designing a database for an eCommerce website, I was in a situation to write stored procedure for my database, this is new ...
1
vote
1answer
81 views
Create database on new partition
I use postgresql 9.1, on ubuntu 12.04. I had installed the depot package.
I have added a new partition to my system, and I would like to create a postgresql database on this partition ( which will be ...
6
votes
1answer
89 views
What is a good way to determine the performance I should expect from a PostgreSQL server?
Trying to figure out how I should expect my database to perform. Basically, I need to determine when the server I have set up is reaching its performance limits - which would help me plan server ...
1
vote
3answers
165 views
Database Design Relationship for Patient Visit in MS Access
I am designing a database to store records for research purposes, and I am having trouble picturing how I can create a relational database based on the information I have.
There are a total of 6 ...
4
votes
1answer
86 views
After Rackspace server creation, PostgreSQL query planner doesn't work as expected
We created an image of one of our database servers in Rackspace. Then, we created a new server using that image, expecting things to work. However, the index performance we have seen seems to be ...
4
votes
0answers
77 views
Does PgBouncer create a separate pool for every database config entry?
If I set up a pgbouncer.ini config file with several database entries, does pgBouncer create a separate pool for each one? I would think so, but have not been able to confirm this.
For example, ...
4
votes
2answers
100 views
How to properly configure PostgreSQL RAM usage?
Using PostgreSQL, we have several hundred concurrent processes doing regular database access. We have our data spread out through several database servers, each of which houses a connection pool with ...
2
votes
0answers
90 views
How to properly configure pgBouncer transaction level pooling?
What is a good way to determine the number of available transaction connections when using pgBouncer to pool database connections? Also, how should I determine the number of max_connections and ...
0
votes
2answers
789 views
1286 - Unknown storage engine 'InnoDB'
I am trying to use roundcube and it recently just broke. I don't know if this is due to a MySQL update that happened recently or not but in phpMyAdmin I get the following error if I try and view a ...
2
votes
1answer
131 views
Create Oracle ASM Disks Without Installing Oracle
I have been asked to setup workstations (VMs) for an instructor's Oracle 11g R2 Workshop. I am finding the documentation that was downloaded from the Oracle Academy site extremely underwhelming. I am ...
1
vote
1answer
227 views
Images, PDF, audio and video files in MySQL
I am designing a database for an eCommerce website.
How can I store images, audio, video and PDF files which are uploaded from the online users, in a MySQL database?
I am using the InnoDB storage ...
3
votes
2answers
90 views
Two corrupted indexes found by DBCC CheckTable
I'm wondering if this problem is solvable by dropping/recreating the two indexes. Both are rarely used, nonclustered, non PK, non FK indexes.
Here is the dbcc output:
Table error: table ...
1
vote
1answer
73 views
Public Database for Mobile Application
What are the proper steps to hosting a public database. Currently I a building a mobile application with Adobe Flash Builder. I have used Microsoft SQL Server, My SQL as well as WAMP Server. All of ...
1
vote
1answer
227 views
how to add attachment(text file) to database mail?
I have scenario
Daily i run a sql job to apply a new updates to one table - this job will create one text file daily - text file contains all new updates
I can send a mail to client that job is ...
1
vote
1answer
112 views
Database design for an E-commerce website
I am new to database design. I am designing a database for an E-commerce website, there are a lot of products to be updated, but while designing for product specification table I do not understand ...
3
votes
1answer
78 views
Load Testing Crash Course
Can someone point me at a good resource to get a crash course in load testing. I have a sql server machine that I need to load test but I havent been thruogh the process before. Also we do not have ...
0
votes
1answer
72 views
What is the maximum number of rows in a clustered index on datetime column?
I would like know what the max no of rows is in a clustered index (non-unique) on a datetime column table in SQL Server 2008R2.
0
votes
2answers
235 views
MySQL Table not repairing
Table info:
Database name: user_motiva
Table name: wp_options.frm wp_options.MYD wp_options.MYI wp_options.TMD
when I do a mysqlcheck -r --all-databases it gets hung on that table even if you ...
2
votes
1answer
145 views
Will a primary key be added as a clustered index?
I've inherited a database where no primary keys were defined on the tables. There are also no clustered indexes assigned to the tables.
If I perform an alter table to assign a primary key will this ...
2
votes
1answer
201 views
How to grant permission for am administrator account in SQL Server 2012? [closed]
I installed SQL Server 2012 on my laptop. I am trying to run a script to create a simple database.
SQL Server version: 11.0.3128
SSMS starting parameters:
server type: database engine
server name: ...
3
votes
1answer
742 views
What queries is Oracle executing, how frequently, and time-taken?
I have a (Java) web-application, that of course executes many queries (selects, inserts, updates, deletes) to the Oracle Database.
I want to find out the following for last 7 days:
SQLQuery ...
0
votes
1answer
230 views
Unable to change engine to MyISAM in MySQL
I have installed MySQL 5.6.10 on Mac OS X 10.6.5. My issue is that MySQL is using InnoDB as its default engine.
I have checked following engines are supported in MySQL:
show engines\G
...
2
votes
1answer
70 views
MySQL specific database configuration file
In MySQL's configuration file I've globally disabled autocommit as so.
[mysqld]
autocommit=0
I need to turn MySQL's autocommit on for a specific Ruby on Rails database though. It could be for the ...
4
votes
2answers
239 views
How to Correctly Estimate the Average Number of I/O Operations my RAID 10 disk can offer?
The average Input/Output Operations per Second a disk can sustain is a very important factor in the tuning of MySQL / InnoDB databases, as it drives the speed with which Dirty InnoDB Buffer Pool pages ...
0
votes
0answers
48 views
400GB Innodb table with deletes and no data_free?
I have an Innodb table which is over 400GB and performing quite a lot of deletes on it, so I thought I should try to optimize the free space kept it is probably creating. I ran this query to find out ...
3
votes
1answer
87 views
Tools and methodologies to keep to DBs aligned
2 DBs having schemas that represent the same semantic objects.
The first one is production DB (Non-RDBMS, in-house implemented in-memory DB with shitload of RAM). Other is Postgres.
Once in a while ...
1
vote
2answers
89 views
An admin (GUI or shell tool) for managing all kinds of databases
I needed an interface/admin (web or desktop) from which I could manage all the databases in my system. Currently I use separate admins for each (phpmyadmin for mysql, pgadmin/phppgadmin for postgres, ...
0
votes
2answers
178 views
Restore the latest backup on the database
We have a stored proc which takes the backup from a database to the specified location. Sometimes the backup process runs more than once. It causes having more than one backup set on the same file ...
1
vote
3answers
341 views
Detecting SQL Server Utilization with a query
My current project will send queries to an sql server constantly and It may use 100% of the memory or CPU.
How can I check if the server is nearing full utilization in a stored procedure so that I ...
0
votes
1answer
202 views
mysql fine tuning: open_tables, opened_tables
I'm a novice to database administration and have been depending on forum suggestions and answers to help resolve my database hang ups and too many connections errors; I've managed to reduce the ...
1
vote
1answer
514 views
unable to login oracle as sysdba
I just got 11gR2 running and was able to conn as sysdba. I shutdown and started up the database to mount a new pfile. Now, I cannot login as sysdba. My parameter for password file is:
...
-3
votes
1answer
52 views
Challenges of a data migration project? [closed]
Main problem I can think of is not migrating all the data accurately (e.g. not migrating data to the right place in the new database, or losing data in the migration process).
Other possible problems ...
1
vote
1answer
298 views
MySQL Tables crashing randomly
This is one of the many random Tables that get corrupted. Any ideas why and what would be causing this?
How do I keep MySQL tables from crashing and MySQL from crashing?
Repairing USR_wp537
...
1
vote
2answers
105 views
Database Is In InRecovery Mode.
I have a database that has entered "Recovery Mode". It was working fine, but ended up in this status a few days ago.
I have been told that a cause can be the partition holding the datafiles running ...
0
votes
0answers
14 views
what happens when closing berkeley db?
I have a program using berkeley db as data store, and when the program finishes its job and exits, it triggers berkeley db to close.
Ok, here is the problem. Nine times out of ten, my Linux system ...
