The discipline of Operational and Architectural Management of Database Systems.

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3answers
52 views

How to enable windows authentication on server that is not part of domain

We have an SQL server instance running on a standalone server (not part of the organizations domain network). Is there any way that we can use windows authentication to logon to sql server without ...
1
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1answer
66 views

Immigrate to file-per-table mode in MySQL

I have 20 MySQL databases and in each there are about 20 tables. All the data is saved in a file called ibData1. Now I discovered about the file per table mode but if I change the value in the my.ini ...
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2answers
1k 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
votes
1answer
54 views

Best Innodb Buffer Pool Size for 8GB RAM?

I found out that my MySQL server is configured with only 128MB for innodb_buffer_pool_size. That is not enough considering that I have a 8GB RAM server. It hosts MySQL server and an Apache/Catalina ...
0
votes
1answer
140 views

Update table from calculated temporary table

I have two tables, one containing a set of user ID's, vote direction (-1 or 1) and ID of the object they voted on (casted votes table). In the other table, the object id, upvotes, downvotes and ...
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1answer
1k views

Table is marked as crashed and should be repaired

I have MySQL and Nagios installed Linux PC (Centos5.5) I have wrote some script to fetch the data from Nagios to Mysql DB (Exactly fetch data in Table) The data fetching working properly (confirmed ...
0
votes
1answer
54 views

Copy database from one mysql sever to another mysql server

Following are the details of the database and server: Server1: Host Name: abc Port Num: 01 database: test Server2: Host Name: xyz Port Num 02 database: spareparts userid: spts password: abcdefgh@123 ...
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0answers
28 views

mysqldbcompare shows checksum fail but row differences passes between MySQL 5.1 and 5.6 databases

I have started to try using mysqldbcompare to help me compare two databases(one is MySQL 5.1.73 and the other MySQL 5.6.21) that are each about 5 gigs with lots of tables, but the databases are ...
0
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1answer
160 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
votes
1answer
25 views

Accuracy of mysqldbcompare vs other tools like pt-table-checksum

I was curious to hear what everyone's experiences are with using mysqldbcompare vs pt-table-checksum( from Percona Toolkit ) to find the differences between two MySQL databases. I have heard that ...
0
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1answer
43 views

Index file - size changed

I realised today that my index file(which is about 250GB) is smaller than yesterday for about 7GB. Everything, I done in the meantime, was index rebuild. Is it possible that index rebuild is the ...
0
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1answer
36 views

Database state set to an earlier state before creating new indexes

This is a remote server (SQL Server 2008). We are trying to get benchmarking of some stored procedures. One stored procedure was taking avrg 44 seconds, we have checked this approx 20 times for a ...
9
votes
1answer
189 views

Clustered Columnstore indexes in SQL Serer 2014 for data warehousing

I am performance tuning a DWH using indexes. I Am fairly new to SQL Server 2014. MS describes the following: "We view the clustered columnstore index as the standard for storing large data ...
3
votes
1answer
460 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
votes
1answer
27 views

Using database control in Oracle 12c

When I want to use Oracle 12c GUI, I receive an error as written below: Servlet error: An exception occurred. The current application deployment descriptors do not allow for including it in ...
1
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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, ...
0
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2answers
50 views

Cannot find .bak in a backup file [closed]

My database backup works well or you can see the backup in the backup file. But the backup has no format of a backup file. I mean you cannot see the .bak associated with it, therefore unusable by ...
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0answers
20 views

Proxy user for DDL

I'm experimenting with the proxy user feature of oracle. My sample: user_a has only object privileges and user_b has only system privileges. user_b is allowed to log in as user_a. So DDL and DML are ...
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1answer
18 views

Oracle dataguard - Redo apply

In a low bandwidth environment when a transaction commits that generates a large amount of redo data will cause other independent transactions to slow down. This is because the redo data of small ...
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0answers
25 views

sql server linked server does not consider indexes [closed]

We have a query with a join between two tables. The first is in the database and the second is in another listener, connected by a linked server. I am executing this query in SQL Management Studio ...
-4
votes
1answer
70 views

When you type an SQL query in interpreter, what does happen? [closed]

Actully this question is asked in an interview from me . When you type an SQL query in interpreter, what does happen? How is the query processed?
3
votes
1answer
380 views

How to drop all scheduler events in MySQL 5.6?

In MySQL 5.6 is there a way to drop all scheduler events with an administrative command or do I have to go through them one by one with DROP EVENT [IF EXISTS] event_name?
5
votes
1answer
175 views

How do I track logins, connections, user accounts, queries, …?

I am a BI person who has been asked to step in and pretend I am a DBA. I am not a novice with databases but AM a novice at the admin type stuff. We have a SQL Server database that is going to be ...
2
votes
1answer
42 views

Create failed for Availability Group 'AGN'

I tried creating availability group (AOH) many times but no luck , It got failed every time. Please help me on this case. I configured Windows cluster (Name as 'WINCLUSTER') with two nodes. They are ...
1
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1answer
26 views

different log file for master and beta mysql

Hi i am facing a problem while shipping my database log I have three database server dev, beta and master and i maintain log files for dev on github and every log file has a version given to it like ...
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0answers
57 views

SA Admin SQL-Server 2012 x64 keeps changing constantly

I know this is a newbie question, but really I can't find some precise info on this issue. I'm trying to figure out how to create a new user with admin server role on SQL Server 2012 x64. I mean, I ...
2
votes
1answer
54 views

What is the best storing device for DB transaction log?

I'm using MySQL with InnoDB storing engine. Transactional log is placed to dedicated HDD. Still as it is HDD atopsar shows big load (>50%) to this HDD because of big amount of small IOs (about 50 ...
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vote
1answer
164 views

How to reclaim the unused Space in a database

The database is almost of size 55GB. This database should have never grown to this size as some of the maintenance jobs were not running. I have deleted almost 30GB of data. Now the database size is ...
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0answers
279 views

ORA-12514: TNS:listener does not currently know of service requested in connect descriptor at the time of switchover using data guard broker

I have a oracle data guard setup with nodes - one as primary and other as physical standby. I also, have configured the data guard broker on it. The problem is when I tried to switch over , I just ...
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vote
2answers
86 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
votes
1answer
30 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
votes
2answers
70 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
19 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 ...
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0answers
19 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
183 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
votes
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
48 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 ...
0
votes
0answers
132 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
votes
3answers
128 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
votes
1answer
48 views

What are the problems with sharing an Access database through online storage service, like Dropbox?

I have a desktop database I created in Access. I'd like to share the database with a single collaborator, who can have full privileges to the database (table access). However, my collaborator is much ...
0
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2answers
97 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 ...
0
votes
0answers
18 views

Joining 2 big tables turn into a server down problem

Recently I was using a database (MySQL with Workbench) in the company that I work for (I'm a business analyst, not a DBA), and wrongly I created a query joining 2 tables that basically are the same. ...
0
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0answers
42 views

Oracle 11g Enterprise Manager failing after backup restore on new host

I'm doing disaster recovery scenario on Windows Server using full cold backups made with EM. My actions are following: Install Oracle 11g SE on new host with creation of db with same path and name. ...
3
votes
2answers
1k 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
15 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
votes
0answers
94 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
173 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 ...
4
votes
2answers
2k views

How can I dynamically back up all SSAS databases on a given instance?

I want to dynamically back up all the databases on a given SSAS instance using a SQL Agent job (which would most likely involve executing an SSIS package). It is imperative that this is a dynamic ...
0
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0answers
304 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
19
votes
2answers
3k 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 ...