The discipline of Operational and Architectural Management of Database Systems.

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3
votes
3answers
338 views

Is this database fine for calculation?

I am doing an application called as Invoice Application.For that I have my database is like this. Now my problem comes when I am taking the tax part in my database.As I have made tax as an option ...
5
votes
1answer
898 views

Does dropping a Primary Key constraint from a Partitioned Table break the partition?

We have a table partitioned on a date column. The Primary Key for the table is a composite key of this date column and 4 other columns. We are thinking about dropping the Primary Key constraint from ...
-3
votes
1answer
2k views

Single query to copy data from 3 tables into a single empty table

In an interview today, I was asked if I could write a single query to copy data from 3 source tables to an empty destination table. I started saying "I will use a temp table or table variables", ...
1
vote
1answer
833 views

MySQL Cluster over WAN: Best Architecture Options?

My company is looking at a multi-data-centre solution for high-availability, fun, and profit. We have businesses across the planet, with the need for MySQL database clustering solutions that can keep ...
1
vote
1answer
2k views

Solution to error NID-00135 in Oracle 10g, Solaris 10

We are trying to build a test version of a production database by restoring the production backup using RMAN and renaming the database to test. We've successfully restored and opened the database ...
0
votes
1answer
535 views

Unable to restore database in Oracle 10g

I created a database backup using the expdp command in Oracle 10g. The backup appears to be created successfully. However, while restoring using impdp command I get the following error message. ...
2
votes
1answer
82 views

How to get dependencies order

I have a Database Called Total and I have about 40 tables in it.I am trying to move the tables in the database into a different server So I have prepared all the create table scripts but the problem ...
4
votes
3answers
151 views

Can anyone describe the step by step process of recovery , backup and restore in sql server

Can anyone describe the step by step process of recovery via backup and restore in SQL Server 2008. If possible please include some examples.
0
votes
1answer
102 views

Is Index Used for This Query

If so, which one? How do we know? I have 3 indexes in a query. Actually only the first 2 should be useful { "v": NumberInt(1), "key": { "LongitudeLatitude": "2d", "Prominent"▼: ...
7
votes
1answer
5k views

Is it possible to synchronize two ms access db?

We have a flower store where we use MS Access and a client program to work with the database. But this program can work only with one database. We are going to open a new store, so now we have to ...
2
votes
1answer
384 views

Assertion failure from InnoDB while restoring using Innobackupex

I thought I would give back to all those people who help me when I have a problem. This might be something old, but I did not find it anywhere so here goes: We recently upgraded our production DBs ...
0
votes
1answer
887 views

WorkAround for PHP PDO(with libpq V 9.1.4) binding for use of CITEXT?

The scenario Two systems(not server) running PHP and PostgreSQL with the following versions Fedora 15: PHP PHP 5.3.13 (cli) (built: May 9 2012 14:38:35) Copyright (c) 1997-2012 The ...
5
votes
2answers
258 views

What are sensible/rational character limits in a database e.g. for a persons name

This is a general question about database admin. Is there some kind of standardization for character limits on fields in a DB? It makes sense to specify character limits on the database end for ...
1
vote
1answer
218 views

Data storage in innodb

I am new to mysql administration and I came to know about the data storage in myisam is through .frm, .myd and .myi. I could not find the data storage mechanism in InnoDB rather than its storage in ...
6
votes
2answers
2k views

Rebuilding index has impact on mdf/ldf files SQL Server 2008

While rebuilding index have used option 'SORT_IN_TEMPDB = ON' in order to avoid unnecessary growing your user database files. What does it exactly means? Is complete process done on TempDB and does ...
0
votes
1answer
3k views

What is going wrong with postgresql initdb? Why is the `UTF-8` encoding not getting enforced?

I am using PostgreSQL 9.1. Trying to enforce UTF8 encoding as default. This is what I am doing. service postgresql initdb -E 'UTF-8' \ --lc-collate='en_US.UTF-8' \ ...
10
votes
2answers
1k views

Recovering logical space from a tablespace

I have a tablespace called DATA, and it is setup with auto-extend as false. This tablespace has two datafiles and is set up so it takes up 350 GB of physical space. A week ago I queried ...
1
vote
2answers
301 views

PostgreSQL : Is this because of locks(row level)?

I have a table with approximately 2.1 million tuples. Which has latitude and longitude columns. I am trying to convert this into a geographic type (point with SRID). The function(procedure) I have ...
2
votes
1answer
688 views

Pgpool-II: sequences advanced by 1 after PITR recovery

I have tested pgpool-II 3.0.1 and pgpool 3.0.4, PostgreSQL 8.4 In both cases I'm getting the same result: after online recovery on primary and target nodes all 'serial' values got "+1". Other nodes ...
6
votes
2answers
4k views

Difference between Row based and statement based replication in Mysql?

What is the Actual difference between Row based and Statement based replication I actually looking in terms of replication effect's on slave. If I am using Row based replication then whats is the ...
3
votes
1answer
6k views

Is it possible to do a datapump import with a different user than did the export?

I have one db dump below is the log file for that dump Connected to: Oracle Database 10g Express Edition Release 10.2.0.1.0 - Production Starting "SYSTEM"."SYS_EXPORT_SCHEMA_01": system/******** ...
2
votes
0answers
370 views

SQL Server SSIS issue retrieve data when i enter into login of server side?

can any one try solve my problem here i am facing a problem Failed to retrieve data when i enter into login of server side here is the error message TITLE: Microsoft SQL Server Management Studio ...
2
votes
2answers
448 views

Help with Vehicle Service database

I am using the Desktop Vehicle Maintenance template in access, but i am trying to cater it towards our farms needs. We will be keeping track of the service's done on Trucks, Tractors, Equipment, etc. ...
2
votes
1answer
184 views

database connection time expired issue

I have a server machine and four client machine for database connectivity. I installed sqlexpress 2008 in server and one machine and all remaining systems, they have connected the database through ...
6
votes
3answers
347 views

Can I check the services currently running through SSMS?

I want to check which services has started and which has not by running a script/query on SSMS.
13
votes
1answer
931 views

Are there reasons why I should not set my db owner to [sa]?

Yesterday I asked this question regarding changing the dbo of multiple databases that I have. The change makes sense, but I want to be clear. Is there any, good reason or circumstance why I should ...
3
votes
2answers
3k views

pt-table-checksum help required

I am trying to figure out pt-table-checksum, as I am using it for the first time. It look likes the documentation is complex and not easy to understand stuff. I have a complex replication topology ...
2
votes
1answer
221 views

Active Directory domain being shutdown— Do I have to update my DBO accounts?

I manage a SQL Server machine (with SQL Server 2000 and 2005 installed) that was first created on an Active Directory domain that we are transitioning away from and are about to shut down. All of my ...
11
votes
3answers
6k views

SQL Server 2008 R2 “Ghost Memory”?

We have a dedicated SQL Server 2008 R2 machine that is experiencing some strange memory issues.. The machine itself has plenty of resources including two quad-core processors, 16gb of RAM and 64bit ...
7
votes
1answer
4k views

Capabilities of InnoDB INSERT Performance

Hi I am running the most recent version of Percona Server. Server version: 5.5.24-55 Percona Server (GPL), Release 26.0 I have a 10 cpu box of these characteristics. processor : 0 vendor_id ...
3
votes
1answer
72 views

Administration of MySQL Users

What is the best practice for keeping and maintaining MySQL users? Say for example I have 5 programmers and a PHP application connecting to a database. Should I create 6 different users 1 for each ...
2
votes
2answers
99 views

which option is better for not slow down the performance of queries?

I am developing a system that records customer payments, when a customer makes a payment, the system must update the account and show the payment made and all previous payments, is here when the ...
-1
votes
1answer
1k views

What exactly is SOLR? [closed]

It seems like a magical technology that can Do spatial search do full text search The problem is, It doesn't say where does it store all the data. Does it have it's own proprietary database If it ...
0
votes
2answers
674 views

DBA to work from home [closed]

I was wondering is it feasible or doable to work from home as a DBA or Database designer/developer or Business intelligence developer. I have seen developers doing great working from home, but can ...
2
votes
0answers
540 views

SQL Developer Data Modeller and Data Dictionary question

I'm not a DBA but I am a (mostly!) competent SQL report writer. Can I trouble you DBAs for some pro-knowledge, please? I can connect SQL Developer to Oracle XE's data dictionary without any problem, ...
1
vote
1answer
234 views

Do you feel like DBA/DBD Is a “secure Field” still? [closed]

I noticed recently alot of Database jobs/Development have kind been pushed onto general developers, not to mention with NoSQL Solutions (Which IMO are probably a little easier for Non-DBA's to throw ...
0
votes
1answer
436 views

What are commonly used database types? [closed]

There are a lot of database types. Can you list a list of the top classification of databases commonly found in schools and offices? Any help is appreciated. Hope to see compressed and summarized type ...
6
votes
1answer
1k views

Mongo Collection `Size` is *larger* than `storageSize`?

I recently compacted my collection using the command: db.<collectionName>.runCommand( "compact" ) And now my collection size seems to be bigger than size on disk! SECONDARY> ...
3
votes
2answers
502 views

What exactly is “pinning” in relation to indexes?

When one talks about "pinning" in indexes, what exactly is this? Is there some other word/term I can search for, as google has not provided any solutions. It is part of a test question, where ...
1
vote
1answer
78 views

Clarification on Cloud Computing Database

This question can be very generic, but I am trying to understand the concept of Cloud Databases. Let's say I have a Web Application, a Desktop Application, and Apps for my Web Application. All of my ...
2
votes
1answer
442 views

PostgreSQL archive_command on Windows

What is the best method for WAL log transfer on Windows? I have two servers with Windows Server 2008, PostgreSQL 9.0 64bit. Servers do not have any shared SAN disk, they are on different hosts, ...
1
vote
1answer
77 views

Oracle DB administrator-specific security features

Yesterday I was presenting an internet banking solution to a potential client management. My offer is based on using MS SQL Server 2008 RDBMS. One of the client's officers mentioned, that Oracle's ...
6
votes
3answers
4k views

Database Administrator vs Database Architect?

In terms of job responsibilities and activities, what is the difference between a Database Administrator (DBA) and a Database Architect?
2
votes
3answers
470 views

MySQL - Master/Slave Replication with different server specs

I have a Master/Slave replication (using MySql 5.1 / InnoDB). Currently both my master & slave are running on the same type of server (32 GB RAM, 2 x Intel Xeon 5520 Quad Core 2.26 GHz (8 cores)) ...
3
votes
2answers
2k views

Why can the SA account no longer access the master database?

I'm somewhat stuck. We have a database server which was set up and configured by a third party. It's for a third party product so unfortunately we're stuck with the way they've configured it. Their ...
0
votes
1answer
365 views

RAID vs Replication [closed]

I'm kind confuse about it, can some one give me a hand with this... Differences. Which one is better. Which one do you use and why? Personal Opinion and advise.
0
votes
1answer
713 views

Look for software that can convert sql (mysql) to erd

I would like to have an ER Diagarm in phpmyadmin, however, its graph is not up to my expectation, the graph has no relationship indicator (1-1) (1-m) etc at all. So i am wondering whether there is a ...
0
votes
1answer
93 views

Copy snapshot files from Publisher, Paste and Apply on subscriber in SQL Merge Replication

I read an excellent article about copying the snapshot files for Transactional replication from Publisher to Subscriber and Apply them on subscriber. ...
2
votes
4answers
218 views

MySql Database solution for specific web app problem

Well, I need to create a comment system for posts that people add to my web app. This web app is just like facebook or myspace posts. Users add posts and people can comment on them. But the problem is ...
5
votes
1answer
319 views

Is there a standard approach to rolling out database schema changes?

A developer said I should simply wrap all my database upgrade scripts in a transaction. If it fails, just roll back all changes. All my instincts tell me this is wrong, especially when it comes to ...