The discipline of Operational and Architectural Management of Database Systems.

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1answer
282 views

Autoclose property resets to true after attaching db even if model is set to false

I am using SQL Server Express 2008 R2. The auto close property of a newly created database will be set to value same as model db. In my case I have set autoclose to false for model so that when I ...
2
votes
2answers
219 views

Autogrowth, shrink and database performance

I have already asked some questions about Autogrowth and shrink. But I have some doubts related to it. 1)I have a database which grows about 300 MB every month. So is it best to set Autogrowth of 300 ...
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2answers
2k views

Optimize a MySQL Database using MySQL Workbench

I actually have a few issues. First, I found this information about optimizing: MySQL OPTIMIZE all tables? The problem is, I don't seem to have a mysqlcheck program anywhere. I'm using MySQL ...
1
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1answer
142 views

MS Access + SQL Server for 1160 users - Is it worth it? (Please Help!) [closed]

Our school in Delhi (India) wants to develop a professional and robust in-house database (SIS) that should handle vast amount of student information, including admissions, registration, re-enrollment, ...
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0answers
224 views

Can't connect to local Postgres databases

After trying to install Postgres using Postgres.app and EnterpriseDB, I decided to re-install it using Homebrew (As I got some problems connecting to database). PYTHON=/usr/local/bin/python brew ...
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3answers
195 views

Recovering Oracle Database using RMAN [closed]

I am an accidental DBA..I have to restore an oracle database using RMAN utility. I don't know anything about backups and restoration and this is my first assigned task. Are there any good forum(s) ...
1
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2answers
1k views

MySql InnoDB tables are missing after restarting

I had a MySql database with a few InnoDB tables. After restarting the server, and starting MySql Server again, I connected to the MySql Server using MySql Workbench, and couldn't see the database at ...
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0answers
21 views

ALTER TABLE Switch Statement Failed due to ANSI_PADDING [duplicate]

I trying to switch table partitions from LEFT to RIGHT. After the required tables have been created, I run the actual switch, but get the following error : ALTER TABLE SWITCH statement failed ...
4
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2answers
3k views

mysql multi threading for a single query

I have big db of size 8GB and having 9 million contacts in this db. When we try to retrieve all contacts, it takes nearly 1 or 2 hour (in some cases result in timeout) to retreive all contacts for the ...
0
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1answer
67 views

Database Designing Issue

I have a database having Millions of records in three tables. Now i want to split these three tables in multiple tables to reduce redundancy and data duplication. A lot of records(Persons) have ...
1
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2answers
276 views

Automatic Failover in Availability Group

I have 2 nodes in my SQL server fail over cluster. I use SQL Server 2012 Availability Groups for HA purpose. The problem is that when one my server goes down the automatic fail over does not happen! ...
0
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0answers
9 views

Multiple requests shut down MySQL [duplicate]

I have some problems with my MySQL database. I configured a server with the database and other services (apache, php) and put run multiple applications. There are two problems: Every day at the ...
7
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2answers
375 views

Where to start with Oracle?

This question only needs one answer: a list of great resources for getting started with Oracle, including Database Administration, PL/SQL and SQL. You may find your question has been closed as a ...
6
votes
1answer
375 views

Better to use a RANGE RIGHT or RANGE LEFT Partition Scheme

I'd like to know if it is better to use a RANGE RIGHT partition scheme or a RANGE LEFT partition scheme? Is one of these options by default a better choice, or is it heavily dependent on the actual ...
0
votes
2answers
382 views

Getting table definitions on the command line in MySQL [closed]

I am new to MySQL. I am trying to get table definitions from the database server (4.0.26). I tried below steps to get information, running cmd as an administrator: c:\> cd mysql\bin\ ...
2
votes
3answers
86 views

MS SQL Server instance name

Quick question guys! Will there be any issues if I use the default instance (MSSQLSERVER) for both test and production environments? They are on separate physical servers. I'm using MS SQL Server ...
1
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2answers
786 views

Database consistency checker in postgresql

Are there any DBCC(Database consistency checker) commands in PostgreSQL? I could find SQL server DBCC commands but not for Postgres? I read that postgresql has inbuilt functionality of perfomance ...
0
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0answers
64 views

Best practices for ranking records in flexible way

Suppose we have 10000 records of any product. User search on our website with his given criteria. so we output search results based on given criteria. Now Admin want to rank products in search. so ...
3
votes
5answers
195 views

Does DBA need (a read) access to virtualization infrastructure? And why?

I am in charge of monitoring, troubleshooting, tuning and optimizing a few dozens production SQL Servers 2008 R2/2012 in my company that are being run inside VMWare virtual machines. I've requested ...
1
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1answer
126 views

sql server database size shown different in properties pane

while monitoring when checking database space used,my favorites are use indexinternals sp_spaceused select (sum(size)*8)/1024 as size From sys.master_files where name like 'indexinternals%' ...
0
votes
2answers
84 views

Mysql 5.5.25 must be restarted to connect

We have MySQL v5.5.25 running on Windows Server 2008 R2. Occasionally people are unable to connect, and the only way we have found to fix this is to restart the mysql service. This happens every 2-3 ...
2
votes
0answers
260 views

IBM DB2 Command line Window - Administrator disappears on windows server 2008 r2?

I have installed IBM DB2 version 10 on windows server 2008 r2 machine. However i am unable to open it's command line window. For example: Whenever i try to open Command Windows - Administrator it ...
0
votes
3answers
102 views

Applying data changes from one database to another

I have an application running on Oracle 9i database and I was looking for something more practical to deploy data changes (not schema changes) from the development database to production. Currently I ...
1
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1answer
50 views

How to document an archived database? [closed]

You've stored the backup file in a safe place, but what kind of info do you store with it? database type (SQL Server) compatibility level (SQL Server 2008) application name application owner ...
0
votes
1answer
164 views

can't connect to postgresql with md5 [closed]

I can connect to db with trust, but it is not letting me to connect with md5. It says : "password authentication failed for user "postgres"" Here what I have in pg_hba.config host all all ...
2
votes
2answers
221 views

How can I prevent users from overwriting databases when restoring?

I don't want users to restore (with overwrite) on some specific databases. How can I inhibit from restoring over these databases?
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0answers
649 views

Analyzing MySQL crash due to corrupt InnoDB page. Failed page checksum

Lately we have been pestered by infrequent sporadic database crashes on one of our MySQL instances. Each time it is due to a failed page checksum. It happens on a specific database but spans multiple ...
1
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1answer
107 views

addition in datetime column during insertion in mysql

i have a table with below 5 columns..timestamp is data type for timedate related column : Region event_time start_time mid_time end_time India 2013-11-03 13:00:00 America ...
2
votes
1answer
2k views

Cannot start psql with user postgres “Could not change directory to /home/user ”

I did a silly mistake. I wanted to set postgres permissions to a folder for exporting data from my database. So I set something like sudo chmod 777 -u postgres /home/user and then my home partition ...
3
votes
1answer
164 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 ...
0
votes
0answers
35 views

How to install SQL Server 2008 R2 [closed]

My installation is completed, but no instance in not loading (I am on my service account). Show only .in for more browser. Not loading my instance in the database engine. Everything is completely ...
0
votes
1answer
103 views

Disk I/O High Activity [closed]

What does the green and blue indicate from the below scrteenshots of disk activity on SQL Server database server? Thanks!
2
votes
1answer
3k 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 ...
0
votes
1answer
53 views

What's the point in mapping users in SQL Server Data Collection?

In SQL Server 2012 R2 Enterprise, whenever I check Management\Data Collection, right-click --> Configure Management Data Warehouse , I see whatever users-accounts-logins except the one I am logged in ...
2
votes
2answers
547 views

How to configure data collection in SQL Server 2012?

In SSMS of SQL Server 2012 Enterprise on Windows Server R2 Standard, each time I am trying to set sub-option "On demand" of option "Non-cached - Collect and upload data on the same schedule" of Data ...
2
votes
2answers
2k views

Unable to access sql database with login and password [closed]

I'm writing Windows Service in C# and inside of it I'm unable to connect to the database. This is the question I've asked recently: SqlException: Cannot open database "path\db.mdf" requested by the ...
0
votes
2answers
1k views

High Disk I/0 Issues

Our database has been giving this error occassionally... "Timeout expired. The timeout period elapsed prior to completion of the operation or the server is not responding. ---> ...
0
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0answers
89 views

Can maintenance plans be used in SQL Server multiserver (Master-Target servers) administration?

Since I failed to configure SQL Server 2012 Multiserver (Master and Target Servers) administration, I am eager to understand whether it (setting Master and Target servers) would permit to send from ...
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0answers
760 views

How to debug problems with SQL Server multiserver (Master and Target server) administration?

I've tried to set Mater and Target Servers on various cobinations of SQL Servers 2012 R2 on Window Server 2008 R2 and Windows 7 machines but always getting one or 2 of the following errors during ...
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votes
1answer
307 views

How can I detect which indexes are being rebuilt offline and how long?

The rebuild of indexes takes appr. the same 55 min. with both "Do not rebuild indexes and "Rebuild indexes offline" "For index types that do not support index rebuilds" with "Keep index online while ...
3
votes
1answer
497 views

Why is the “The package can not be saved to the file system since its protection level is server storage” error?

When I execute dtutil /sourceserver localhost /SQL "\Maintenance Plans\MaintenancePlan_daily" /copy file;.\MaintenancePlan_daily.dtsx from the answer to my question "Any way to ...
0
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1answer
128 views

Which index types do not support online index rebuilds?

In SQL Server 2012 Enterprise Ed., which index types do not support online index rebuilds? and why? and which activity-operations can prevent online index rebuilds?
0
votes
1answer
396 views

What is blocking 'SELECT… WITH(NOLOCK)'?

While following BrentOzar's "How Much is Offline During an Index Rebuild?" I was curious to run: SELECT Quantity FROM [Production].[TransactionHistory] WITH(NOLOCK) while executing a rebuild ...
1
vote
2answers
58 views

What does enabling containment on server incur?

Having read in a book of Patrick LeBlank "Microsoft® SQL Server® 2012 Step by Step": "Benefits and limitations of contained databases As with most features, there are benefits and ...
2
votes
1answer
1k views

VS2012 setup spoils SQL Server 2012 Data Tools for everybody or just me?

On Windows 7 Prof I have installed SQL Server 2012 R2 with, as I am pretty well remember, client tools. Then, I tried to install Visual Studio 2013 Ultimate but failed. Then I've installed VS2012 ...
0
votes
2answers
358 views

SQL Server 2012. Update second table based on input from first table

I have two tables in two databases: Table01 in Database01 and Table02 in Database02. Both tables have a column called UserID. The UserID column is created when the user creates a new account on the ...
11
votes
3answers
8k views

I Want to Become a Database Administrator - How Can I Start? [closed]

I just took a database course in my college and found it fascinating. I want to learn more in this field, but I feel a bit lost with how to start. How do I become a database administrator? What are ...
1
vote
1answer
1k views

Which user does Windows Authentication of a maintenance plan authenticate? before whom, why and for what?

I am having a maintenance plan configured with Windows Authentication being run by an SQL Server Agent job with owner sa Whom does Windows Authentication of a maintenance plan authenticate, ...
1
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2answers
498 views

How to give the least permissions for CRUD-managing and running SQLServerAgent jobs as well as Maintenance Plans?

Follow up to my question "What's the owner of SqlServerAgent job for?" Basically, I am trying to understand how to create a user-login with least privileges for CRUD-maintaining SQLServerAgent jobs ...
0
votes
1answer
3k views

Oracle 11g increasing shared pool size and java pool size

i need to install/configure oracle jvm on 11g. to be able to install same i need to increase the size of shared_pool_size and java_pool_size. i have automatic memory management enabled. my ...