The discipline of Operational and Architectural Management of Database Systems.

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2
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1answer
71 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 ...
1
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2answers
60 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 ...
0
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2answers
125 views

Need Help maintaining multiple databases for a multi-tenant application?

i need some information about multiple databases for a multi-tenant application ? I am working on a project in which we are maintaining separate database for every company? The Companies Database ...
1
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1answer
41 views

Create user to monitor database activity on Postgres

Postgres 9.3 Debian 7 I want to create a monitor user called monitor that the only permission is to run queries to monitor all the database activity. I created the user and it can select from ...
1
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1answer
153 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
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1answer
436 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 ...
0
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0answers
67 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 ...
1
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2answers
3k views

ORA-01033 “ORACLE initialization or shutdown in progress” caused by ORA-10567 “REDO is inconsistent with data block”

I faced an error while logging to database with regular user (non SYS/DBA): C:\Users\user>sqlplus tester@orcl ORA-01033 ORACLE initialization or shutdown in progress However I can connect via ...
0
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0answers
36 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 ...
3
votes
2answers
85 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 ...
0
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0answers
39 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 ...
1
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2answers
85 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 ...
0
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0answers
15 views

MySQL - HOWTO speed up slave replication on large database / Quickly spawn slave? [duplicate]

We have a large mysql database (about 100GB on disk) that we would like to spawn a slave for. Our typical process for creating a slave is: Create a slave server Load in a mysql dump of the master ...
0
votes
2answers
744 views

MySQL - HOWTO speed up slave replication on large database / Quickly spawn slave?

We have a large mysql database (about 100GB on disk) that we would like to spawn a slave for. Our typical process for creating a slave is: Create a slave server Load in a mysql dump of the master ...
0
votes
1answer
42 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 ...
2
votes
2answers
60 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. ...
1
vote
1answer
132 views

Is this a good case for multiple SQL Server instances on a VM?

We have a suite of applications utilizing SQL Server have the following characteristics: Users create/destroy DBs via a UI, so DBs appear/disappear without DBA assistance. DBs of the same name can ...
0
votes
1answer
37 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 ...
0
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1answer
2k 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
votes
1answer
316 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
2answers
105 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 ...
1
vote
2answers
436 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 ...
0
votes
1answer
36 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 ...
0
votes
1answer
47 views

How can I perform this database backup/sanitization task?

I have a 3-node MariaDB/Galera cluster. I need to do two things: Back up the database regularly (multiple gigs in size) for a normal, in-case-everything-crashes-I-can-restore-from-this backup. Have ...
2
votes
1answer
1k views

Error Code: 1133. Can't find any matching row in the user table

Im reading O'Relly "Learning MySQL" and it says that you can create a user in MySQL by doing just this: mysql> GRANT ALL ON *.* TO 'jill'@'%.invyhome.com' IDENTIFIED BY 'the_password'; Query OK, 0 ...
0
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1answer
43 views

Oracle: Replace corrupted first datafile

A datafile associated with a tablespace has been corrupted (got truncated to size 0). I don't mind losing the data, because I have a full DB dump which I can import. Now I want to replace this ...
2
votes
1answer
141 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 ...
2
votes
1answer
425 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 ...
0
votes
1answer
21 views

compare file-based systems and a relational database

I don't know the exact difference of both can you please compare file-based systems and a relational database?
1
vote
1answer
67 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 ...
7
votes
2answers
470 views

MS SQL Server Cumulative Updates - Best Practices

I'm trying to get an idea of what recommended best practices are for the SQL Server Cumulative Updates. Currently, we run on the idea of "do nothing unless an issue fixed by the CU is one we ...
0
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0answers
91 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 ...
2
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0answers
90 views

How to make PostgreSQL default_tablespace work properly?

My question is, "Why isn't database 'screwy' created in tablespace 'screwy'? I made the following script, with it's output following, to show the problem I am having : #!/bin/bash # export ...
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2answers
155 views

MySQL user without SUPER privilege

This may be a simple question and may not be the right place to ask but I couldn't find any useful information from Google. Here is my question. When creating users in mysql using grant all ...
1
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1answer
52 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 ...
1
vote
1answer
129 views

Way to run SQLCMD without storing password in text format

Is there a way to run sqlcmd from a batch file where I don't want to store the password in plain text format. I have done some research and found the system variables method(store password in system ...
0
votes
1answer
62 views

PHP SQLite Admin is running on PHP 5.4

I tried phpsqliteadmin But it doesn't seem to work anymore on PHP 5.4. There are several alternatives, but none of them seems to be "The One" that is maintained and widely used. Is there a standard ...
5
votes
1answer
103 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
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0answers
67 views

How to skip already created table while importing dump file in MySql

Is there any way to skip already created tables while importing ? I am trying to import 2GB of database using command prompt but the operation is aborted by mistake. Now if i will do the import again ...
1
vote
2answers
95 views

Limiting read access in postgres to few rows

We have a requirement where we want to limit the maximum no. of rows that a select query can return when its done using a particular login. So basically we would like to append a limit clause to any ...
0
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0answers
150 views

Archive Logs not applied on Primary Database

I have a oracle database and some archive logs in the primary database have not been applied. When I run SELECT THREAD#, SEQUENCE#, APPLIED FROM V$ARCHIVED_LOG order by SEQUENCE# I get the following ...
0
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3answers
230 views

SQL Server: unable to copy database

I'm trying to create a dev database so I don't create triggers and such on the production database. I use the right click -> Taks -> Copy, followed the wizard and the process starts. After maybe a ...
0
votes
1answer
238 views

MySQL slave database wont start

I have a MySQL master slave configuration and the slave is not working anymore. When trying to stop and start again the slave db, I am getting this error: 140530 14:21:23 [Warning] Slave I/O: ...
0
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0answers
54 views

Oracle 9i Low performance on Windows Server Enterprise 2003

I'm facing some problems with performance with my Oracle database running on a virtual machine with Microsoft Windows Server Enterprise 2003 with 8GB RAM. It works pretty well after the database is ...
1
vote
1answer
85 views

Way to ensure just one connection to a DB2 database

Let's suppose a database with a bad security design, say everyone access to the database with a user with DBADM or SYSADM authority, and also, there could be only username for everyone (i.e. ...
1
vote
3answers
130 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 ...
0
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0answers
802 views

Uninstalling Oracle Database Products: Which & How to?

Long time reader, first time poster. For our client's project we are using Oracle 11g. It's a simple C# web application so we are using Oracle's most basic components. Now my project team has been ...
3
votes
1answer
47 views

“zip” a mySQL (phpMyAdmin) database [duplicate]

I've created a large database on my local WAMP webserver. I would like to send that database with all tables and table data to another computer. Is this possible? mySQL ver: 5.5.15 PHP ver: ...
1
vote
1answer
83 views

What is the advantages of using auto_increment in database as primary key over set of attributes?

I have table as CREATE TABLE circle ( circle_id int(11) auto_increment primary key not null, user_id int (11) not null, title varchar(255) collate utf8_general_ci not null ); CREATE ...
0
votes
1answer
101 views

What is the strategy of query evaluation in DBMS when Limit is used in query?

I have following tables in database post(post_id , user_id , post_text , parsed_text) ; Comment(comment_id , post_id , user_id , comment_text) ; friend(id , user_id , friend_id ) ; group (id , ...