The discipline of Operational and Architectural Management of Database Systems.

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Tables not created in default tablespace postgresql

I have create a database with default tablespace 'TEST1' instead of pg_default. the owner of the database and the tablespace is postgres. I log in to the database with postgres -d test create a table ...
3
votes
1answer
132 views

Confused about load balancing and horizontal scaling in postgresql [closed]

Please correct me if I am wrong but I guess handling more requests and load by adding more machines or balancing the load between multiple servers is horizontal scalling. So, if I add more servers, ...
2
votes
1answer
81 views

db2 performance issue - large number of IOPS how to determine problem?

DB2 database is on storage. We are using 9.7 Storage administrators reported that today database was doing 5000 IOPS (during past days average number was 300 IOPS). Those are disk operations from ...
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2answers
50 views

How to store a database table in multiple disks with assigned ratio?

I am going to deploy database tables to multiple disks. My database layout would be like following example: There are 3 tables (Customer, Order, Product) and 4 disks (disk_A, B, C, D). Customer: 5% ...
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1answer
81 views

What is a bucket in database? [closed]

I was implementing a code that involves a database and buckets. Just wanted to ask what is bucket and can someone describe it with an example? Thanks!
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1answer
69 views

Script to see running jobs in SQL Server with Job Start Time

how to write script to see running jobs in SQL Server with Job Start Time? SELECT sj.name, sja.run_requested_date, CONVERT(VARCHAR(12), sja.stop_execution_date-sja.start_execution_date, 114) ...
1
vote
1answer
56 views

ORA-12541 error while connecting to oracle express edition 11g

My oracle express edition was working some months earlier. I dont know what i changed in the system, now I could not connect to it. I tried logging in from sqlplus as sysdba and altered the accounts ...
1
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2answers
95 views

Move a huge databases from one SQL Server to another

I have customers databases located on my SQL Server 2008 machine. The size of these databases are around 300 GB. I would like to move them all to another SQL Server 2008. Is there a way to shrink ...
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1answer
44 views

Which MongoDB administration UIs offer a table view (OS X)?

The only admin UI we found that offers a table view is MongoVue, which is only available on Windows. We're on Macs with OS X. Do any exist?
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39 views

SQL Server A network-related or instance-specific error

I have a windows service that performs a lot of hits to database. Sometimes the database connection is down and I got exception "A network-related or instance-specific error". I got this behavior on ...
0
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2answers
257 views

Create database fails with Microsoft SQL Server Error 5133, Operating syste, error 5 (Access is denied)

I just installed SQL server 2012 on Windows 2012 today. After the install, I changed the database settings to create database files in f:\mssql instead of the default. i verified the confired and ...
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0answers
39 views

InnoDB crashes frequently

My Innodb Engine is getting crashed frequently. I could not find the reason behind this. This is the error log: 140129 9:22:49 [Note] Plugin 'FEDERATED' is disabled. 140129 9:22:49 InnoDB: The ...
0
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1answer
42 views

Rotate Postgres log at 5GB

How to make postgres 9.1 log to have maximum size 5GB and to be circle when comes to 5GB ? At the moment my log file is over 500GB. /var/lib/postgres/
3
votes
2answers
409 views

SQL Server Connectivity Issues

I am getting the below error on occasion. Maybe every 30mins or so. I am not sure how to track what is causing the issue. I think it could be a Network problem as there are disk backups running as ...
1
vote
1answer
72 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
96 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
210 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
vote
1answer
88 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
86 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
99 views

Recovering Oracle Database using RMAN

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) ...
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2answers
194 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 ...
0
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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
325 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 ...
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1answer
63 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 ...
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2answers
116 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! ...
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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 ...
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2answers
222 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
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1answer
119 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
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2answers
112 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
67 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 ...
0
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2answers
119 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
34 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
152 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 ...
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1answer
44 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%' ...
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2answers
33 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
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0answers
77 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
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3answers
95 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 ...
0
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0answers
47 views

Which queries are running and what tables are they accessing? [duplicate]

I am learning Oracle. I am trying to write a query to find out the list of SQL queries and the tables that they access. I tried looking into v$sql, v$sqlarea etc, but was not able to find a column ...
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1answer
44 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
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0answers
45 views

See list of queries executed by a user in Oracle

As an Admin I would like to see the list of queries executed by a particular user? How can I configure DB to keep track of all the queries executed and how can I see them? I am using Oracle 10g.
0
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1answer
88 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
102 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
264 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
vote
1answer
48 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 ...
1
vote
1answer
436 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 ...
2
votes
1answer
48 views

how i can upgrade mysql (5.5) production DB to 5.6 with minimizing downtime

our existing Database size around 200Gb,if we can use consistent,parallel backups methods. for testing i migrated development Db from 5.5 to 5.6 by taking 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
80 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!
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1answer
358 views

How to diagnose what is causing DB timeouts

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
37 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 ...