The discipline of Operational and Architectural Management of Database Systems.

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2answers
265 views

Monthly report by time [closed]

I work in a parking company. We need a report of monthly vehicle exits by time. select hour(datetimeout) as 'dateout',count(*) from to_leaveveh where datetimeout between '2014-09-01' and ...
0
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1answer
46 views

Who should own the staging database right

At my company we are re-assessing which developers will take on the deployment for xyz ticket. At the moment when a developer is done with his ticket, a deployment ticket is created and another ...
0
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2answers
220 views

The dump database on a SSD disk is slowly restored in SQL Server

I prepared new server for my DB on Windows 2008R2 + SQL Server 2005 SP4. I always estimated time of restore database of a backup as time of copying of the file of a backup at that place where the ...
0
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1answer
24 views

Is it possible to run a trigger on Table Creation in MySQL

Simple Question. Is it possible to create a Trigger that runs everytime a Table is created. The goal is to create a metadata table for each table, but I can worry about dynamically passing the table ...
-2
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0answers
24 views

increasing Mysql DB Size and Server Size [closed]

I have installed xampp on my windows machine, i'm using MySQL, How to increase the size of mysql server and databases in it? Kindly help me..! Thanks in advance...!!!?
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2answers
254 views

Relational Model vs. Database Products [closed]

The formal Relational Model (logical level) for databases is not exactly the same thing as you get with MySQL, Oracle or other major products / implementations of ‘relational’ database management ...
2
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1answer
2k views

How to schedule a weekly backup of a database only if it has been changed since last backup

I´m new to SQL Server administration. I´d like to create automatically backup database every Sunday night, but only if there was any change in previous week (if not, backup is unnecessary). Is there ...
1
vote
1answer
97 views

Turning off auto growth for particular file

We have a primary file group with several files each on different disks. One of the disks is nearing capacity and as such we have had to switch off the auto growth for that file. Is there anything I ...
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0answers
2k views

Log full and an Active_transaction on database

I have limited access to this server eg I cannot SELECT * FROM sys.dm_tran_session_transactions for example I, perhaps foolishly, ran this query to insert some test data... begin transaction update ...
0
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3answers
305 views

Large RAM use after import database - ubuntu server

My new VPS has 4GB of RAM. Before importing database system use about 1.2 GB of RAM. When I import into the database, using 250 MB SQL file, 25000 tables use of RAM goes to 97%, htop showing 3302 mb ...
0
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2answers
1k views

MySQL: How to fetch nth level child menus of a parent menu

I have a menu which is parent of multiple menu items and each child menu has their own child menus. This pattern is continued till 5-6 vertical hierarchy level. I don't want to write a query which ...
3
votes
2answers
2k views

Problem with Czech collation Czech_CI_AI in MS SQL Server 2008 R2

I have the following issue with accent insensitive search in Czech language. My database is set to Czech_CI_AI collation. For some diacritics system works correctly (ie. I), but for some does not (ie. ...
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0answers
46 views

Restore postgresql database from remote sql file

I would like to know if it's possible to restore a database from a remote sql file. The problem: - Working with PostgreSQL 9.2.4 - I have an small remote server with 10GB left in storage - I have a ...
2
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0answers
115 views

How to calculate the ratio insert/select against a table to manage the index in Sybase ASE?

To create/manage indexes of a table, it is important to know the ratio insert/select or modification/reporting. For instance, if there are more INSERTS than SELECT against a table, we should try to ...
0
votes
3answers
2k views

SQL Server Create Database File Error

I get the below error running a CREATE DATABASE script... CREATE FILE encountered operating system error 5(failed to retrieve text for this error. Reason: 15105) while attempting to open or create ...
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0answers
3k views

Need Help in DFD Diagram for online hotel booking system

Hi friends, I am creating a data flow diagram for online hostel booking system. not sure if i created a correct diagram or not any help would be appreciated. thanks in advance
24
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2answers
5k views

How to make a transition from SQL Server DBA to Oracle?

As an interest, if I would to transition from a SQL Server DBA to Oracle what will be the major learning or unlearning that I would have to do? I would assume the concepts are the same and the ...
1
vote
2answers
111 views

MySQL: How to sync on demand beetwen two database in the same server

I'll like to know if it's possible to have a systeme on synchronisation beetween two database in the same server. I have a production database in my server , i want a dev database (same database with ...
2
votes
1answer
86 views

Is data warehouse monitoring same as database monitoring? [closed]

I have a requirement, where data warehouse population is to be monitored. I am in confusion, and needed a clear picture. Is data warehouse different than database? eg. For monitoring database we ...
12
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1answer
2k views

Why would you use a managed service account rather than a virtual account in SQL Server 2012?

In SQL Server 2012, service accounts are created as virtual accounts (VAs), as described here, as opposed to managed service accounts (MSAs). The important differences I can see for these, based on ...
1
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1answer
690 views

Beginner questions about SQL and relational algebra

I'm doing some exercices waiting for the exam. I have some doubt. RELATIONAL ALGEBRA These are the table: Newspaper (Cod_n, Name_n, Publisher) Article (Cod_a, Title, Topic, ...
0
votes
1answer
3k views

What's a good workbench tool for sqlite similar to MySQLWorkbench for MySQL? [closed]

What's a good workbench tool for sqlite similar to MySQLWorkbench for MySQL? I'm used to MySQLWorkbench for working with MySQL databases. Now I have some sqlite databases to work with and would ...
3
votes
5answers
12k views

Small sample database for practicing database administration?

I'm looking for a portable sample database that can be created from a script has a simple ER model has little data for database administration practicing purposes. I know that there is e.g. ...
0
votes
1answer
481 views

Pentaho 4.4 Database connectivity issue

I am getting the following in one of my transformations. I am trying to extract data from SQL server and pushing to mongodb. 2014/04/03 13:11:10 - EMPLOYEE TABLE Input.0 - linenr 700000 2014/04/03 ...
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0answers
274 views

How to change the domain name or IP address in mysql database in every tables

I was using Openfire chat server in Ubuntu, whose IP address was 192.168.1.15. Then, I wanted to move it to other ip (192.168.1.55), so i took a backup of my database. The database I was using is ...
2
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0answers
128 views

Should I use SQL Azure to store product descriptions and links to images in Azure Blob

For an html/Css/JQuery public Azure website to be coded using Zurb Foundation html5 responsive framework, I'd like to use SQL Azure (web edition) to store product descriptions and links to images that ...
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2answers
2k views

Optimizing large MySQL SELECT WHERE IN clauses

How can the following SELECT WHERE IN case be optimized? I have a table with over 100 million rows with only 3 columns. The primary key (col1) is a 127 varchar. I am performing a SELECT col1 WHERE ...
1
vote
1answer
11k 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 ...
0
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0answers
122 views

cronjob(script) that sends(mail x) the query co-ordinator SID whenever parallels are invoked in queries

i am a junior dba im looking for help with a shell script that needs to be put in the crontab(which runs every 15min) which sends(via mail x) the query coordinator session id(SID) and other details ...
0
votes
1answer
3k views

DB2 9.7 LUW - How do I SET SESSION_USER when I am DBADM,SECADM?

Based on a previous question I have asked, I am attempting to work on a solution as recommended by mustaccio's answer, whereby I have another ID to create my DDL objects. I have been trying to follow ...
3
votes
2answers
92 views

Designating databases to certain CPUs

SQL Server 2012. AlwaysOn Cluster with two nodes, each has 4 cores We are consolidating SQL server instances and moving bunch of databases from various locations to a single cluster which has two ...
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0answers
97 views

Reliability of Scimore embedded database

I currently use SQLite for some applications that need a light embedded database. These apps use multiple processes that access the same database. For concurrent write access this is cumbersome. We ...
2
votes
1answer
13k views

How to diagnose what is causing DB timeouts [closed]

I'm a web developer which currently has the joy of managing a client website that is still using Classic ASP that uses SQL Server 2000. The code is quite old and in the process of been updated to a ...
1
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2answers
225 views

Undo Deleted Records [duplicate]

My Database has Full BackUp Plan on Every Morning on 01:00 Am. Today I came to work and Deleted all of the Records in a table by mistake in sql server management Studio by running this command delete ...
2
votes
2answers
71 views

Give every user 3 default 'bookmark' entries

I've got a table users and a table bookmarks. The table bookmarks obviously contains pages the user wants easy access too. But, there's a new requirement now: every user gets 3 unmutable bookmarks. ...
0
votes
1answer
65 views

Can a connection's prepared statements be altered by Postgres's admin functionality? [closed]

I am trying to tamper proof as best as possible a peer to peer application. I am concerned that the prepared statements will be altered. Can the Postgres admin alter a connection's prepared ...
0
votes
1answer
43 views

Max function and group by getting differenet count [closed]

Statement 1 : Select Load_Date , Count(*) Last_Count From <Table_Name> group by Load_Date; Statement 2 : Select max(Load_Date) , Count(*) Last_Count From <TABLE_NAME>; Statement 1 ...
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1answer
13k views

Inserting data into multiple tables

For my system, students are required to create a user account by completing a registration form (personal, contact and course details; also username and password). I need to collect registration data ...
0
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2answers
308 views

Open Transaction that won't go away SPID Ns

There is a transaction that has been open on this instance since it was restarted and is preventing us from clearing the ldf. Here is the transaction information: Transaction information for ...
0
votes
1answer
2k views

How many tables will be there in Magento 1.8 [closed]

I just started using Magento with 1500 products and I saw the DB size is about 150MB and when I looked at the tables, the count is 250 tables. Is it normal? Should I worry about anything? I host ...
0
votes
1answer
78 views

Large NOT IN Statement vs Creating/Populating Temp Table

I have a large daily data feed which can contain up to around 5,000 ID's. I need to delete all pre-existing records in the DB that are not referenced in the new feed. Should I create a temporary table ...
5
votes
1answer
157 views

SQL Server 2012 Unable to Utilize Defined Amount of Locks

So I've been beating my head against the wall for two days about this and I can't find a solution. I'm running a script to stage a large amount of data. This script requires roughly 35 million locks ...
0
votes
1answer
3k views

Plugin 'FEDERATED' is disabled

Im trying to start Mysql using easyPHP : the response is an alert window to a log file. The main error is <-- Plugin 'FEDERATED' is disabled -->. Through my research on internet i found that the ...
2
votes
1answer
208 views

TSQL- Column DataType Length

Can anyone please explain me the below one. I used the below query in getting the table columns info, but the max length seems to be x*2 of the actual col length. I mean if I have a col with datatype ...
3
votes
1answer
469 views

How to upgrade MySQL (5.5) production DB to 5.6 with minimal downtime

Our existing Database size around 200GB. We want to use consistent, parallel backups methods. For testing, I migrated my Development DB from 5.5 to 5.6 by running mysqldump with option ...
2
votes
2answers
5k views

Free up disk space on sql server

Assuming I have a sql database server with disk space as follows: D Drive: 10GB (For the MDF file) E Drive: 10GB (For the LDF file) And I have only one database on the server with the following ...
2
votes
1answer
1k views

Is DBCC SHOWFILESTATS an accurate way to see unused space?

We have a few tables each with near 100 million rows of data. A co-worker has these tables setup with partitions based on a date field. Our disk space is starting to run low and knowing that ...
1
vote
1answer
234 views

How to create trigger with NOT FOR REPLICATION

I tried adding "NOT FOR REPLICATION " in many parts in the below code but ended up in the below code. I searched a lot for an example where I can see how its done with a trigger. Can any one show me ...
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0answers
176 views

Why does second instance of database not open?

SQL> startup ORACLE instance started. Total System Global Area 3841982464 bytes Fixed Size 2025392 bytes Variable Size 788531280 bytes Database Buffers ...
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3answers
352 views

Mysql to Oracle communication

I have a website running with php and mysql on Centos(Amazon instance). The newly brought ERP(to be integrated with existing system) uses Oracle as db(located on a separate Windows Server). The orders ...