The discipline of Operational and Architectural Management of Database Systems.

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4
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2answers
2k views

How to remove identity specification for multiple tables

I am having total 109 table in Database and now i am migrating to Amazon server with identity insert and now i want to remove auto increment column specification for all tables. How set auto increment ...
3
votes
4answers
300 views

What architecture is best to store a large 3 dimensional array in MySQL?

I am looking to create a large 3 dimensional database in MySQL. The structure will basically be a standard MySQL table, with a time component / dimension added. See the following analogy: { x, y, ...
3
votes
2answers
55 views

Replication DB move

I have 2TB of DB involved in SQL Server transactional replication. I want to move publisher DB files to a newer disk with minimum amount of downtime and without breaking replication. Please let me ...
1
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0answers
35 views

After disabling replication, should I disable binary logging?

I have a master-slave setup currently but am going to remove the replication DB server. The DBs are running on MySQL 5.6. I have a couple of questions about removing the replication: 1) I have read ...
0
votes
1answer
39 views

mySQL Data loading: Better to column map or INSERT SELECT INTO ETL?

I've got 125 csv files to upload into a database. The files are typically ~200K rows and 30 columns. In order to make the data more relational I was going to column map during LOAD DATA INFILE ...
0
votes
1answer
55 views

Movement of Standby database from one location to another location

Looking for help on below mentioned process We are planning to move the standby database from Location A to Location B. I need your help to move this database using lift and drop method, by ...
0
votes
1answer
83 views

How do you GRANT SELECT on hidden resource database mssqlsystemresource?

I get an error when I run this query: SELECT dependencies.referencing_id as object_id, dependencies.referencing_minor_id as column_id, dependencies.referenced_id AS ...
0
votes
1answer
20 views

Cannot access mysql in ec2 instance

mysql -u root ERROR 1045 (28000): Access denied for user 'root'@'localhost' (using password: NO) I installed mysql server on a ec2 instance and started it. Seems like it started , but when I ...
0
votes
2answers
63 views

Missing rows in Visual DBA, exist when queried specifically

Greetings fellow DB Admins, I have an interesting issue on which Google has failed me. Background: I am working with medical records managed with Ingres SQL. The other day I wrote a simple query in ...
1
vote
1answer
607 views

Database gives “ORA-01109: Database not open” error when it IS open

Running Oracle Database 12c on Windows Server 2012 Whenever I attempt to do a log switch (alter system archive log current), I am given the error in the title. Searching online shows the simple ...
1
vote
2answers
4k views

DB2 - how to safely blow away database on linux?

I'm using (I believe) 10.1.2, on CentOS 6.5 (for sure). The underlying problem I have is that the database upgrade package prepared in house isn't working for me, in at least the sense that the ...
2
votes
1answer
106 views

Forums about getting SQL Server 2000 Administration help?

What I'm trying to accomplish is that I need to migrate the SQL Server 2000 installation into a SQL Server 2008 installation, and I would like to say that I am afraid that after this operation I will ...
6
votes
1answer
354 views

Role of Database Administrators

I am currently working as an application developer on a project which involves the creation of a new SQL Server database. I am actively working with a group of DBAs who will play some role in the ...
1
vote
3answers
196 views

What are the challenges of administrating an International stock trading database?

I am a student, and have a question for an assignment: What problems and challenges do database administrators face when designing systems to trade international stocks in real time and 24 hours a ...
2
votes
0answers
62 views

CPU utilization reached 100% after changing OS time on SQL Server with Mirroring configured for a database

We have configured mirroring on SQL database server. Suddenly principal database server reached 100% CPU, windows log events shows following 2 logs This event is generated when the system time ...
0
votes
1answer
48 views

how to build statistical database?

According to the book I am reading, a statistical database is a database that permits queries that derive aggregated information but not queries that derive individual information. At current time, is ...
0
votes
0answers
27 views

How can I find last access time for users or specific users to all databases in SQL Server

I have a SQL Server with more than 100 Databases and I should manage the server and it's space usage, users can restore and use backups they have on the server, I have a software for this server,if ...
1
vote
5answers
27k views

1286 - Unknown storage engine 'InnoDB'

I am trying to use roundcube and it recently just broke. I don't know if this is due to a MySQL update that happened recently or not but in phpMyAdmin I get the following error if I try and view a ...
1
vote
1answer
36 views

How to restore a database, ignoring the free space within each file?

Using the following script I get all the disk space used by each file in my database: ;with radhe as ( SELECT DatabaseName = 'my Database', --DB_NAME(), a.FILEID, [FILE_SIZE_GB] = ...
1
vote
1answer
52 views

Stored Procedures execution permissions

So what I am trying to do is to limit the access to a stored procedure so that only another stored procedure may call it. Here is an example: create procedure Database_Deployment_Proc -- This ...
2
votes
1answer
34 views

Could Not Be Accessed Value Of The For Loop Counter In PL/SQL

I try to learn PL/SQL for loops in tutorials. I learn flow of control in a for loops. (And i saw that it is same with most of the other programming languages) Here is the flow of control in a for ...
2
votes
1answer
63 views

Is this table in my ERD redundant? (Image)

I am developing a research article database for a project. My professor approved this design but I feel like the Author's_University table is redundant and that University_ID could just be added to ...
0
votes
1answer
30 views

Set Default Maximum Rows for Export

I am more of a Vertica database user than admin, so I'm not even sure if what I'm asking is absurd, but here goes nothing... Could I, as an admin, put default restrictions on the number of rows that ...
0
votes
2answers
72 views

SELECT fields from table having some conditions

I have two tables 1. Named as t1 2. Named as t2 example of the tables are : t1 : id name 1 one 2 two 3 three t2 : id name 2 five I need to select all the data ...
0
votes
0answers
38 views

What the exact different between Oracle Fusion Middleware and alternative (Non -Fusion)?

I have properly working CentOS release 6.7 (Final) and I have installed Oracle Database 11g Express Edition, Oracle SQL Developer (Working properly). Now I want to install Oracle Forms and Reports ...
1
vote
2answers
46 views

How to view security permissions for encryption keys in SQL server

Is there a way to view the security permissions assigned for encryption keys in SQL Server? Furthermore, where are all these keys stored?
1
vote
1answer
3k views

listener does not currently know of SID given in connect descriptor in oracle 10g and solaris 10 env

I have an Oracle 10g database on a Solaris 10 system. The SID=OTRS, I can connect to the Oracle database from the local server itself. But I am not able to connect from another client. It is returning ...
9
votes
3answers
6k 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?
0
votes
1answer
39 views

Database access: what should I do here?

I'll explain my situation here, I hope I'm posting this on the correct site, otherwise I'm sorry and I'll move this to somewhere else. I've built a Java program in order to control sales, inventory, ...
0
votes
2answers
40 views

How can I handle delayed records a month or older on a table clustered on time?

I have a two part question really for anyone working with data warehousing where they have large fact tables. Question 1 Lets say you have a table that has 500 million or more records in it that is ...
2
votes
2answers
3k views

What is meant by DDBB?

Today we got a term DDBB. I am not sure whether it refer normal database or database driver in certain programming language. Google search did not help me much in this. And I am sure it is not 'Dirty ...
0
votes
0answers
18 views

Wordpress DB's and fixing corruption

I'm usually over in the Wordpress stack exchange but I thought this would be more pertinent in this community. Recently I took down a site I spent a few years developing it's content and closed the ...
0
votes
0answers
26 views

Does extending datafiles affect performance

We have an Oracle 10.2.0.3.0 on Windows 2003 Server which is scheduled for upgrade within the next six months. One tablespace is about 2TB in size with over 250 data files. Some of these were ...
1
vote
1answer
51 views

Mongo database error in resource allocation

pthread_create failed: errno:11 Resource temporarily unavailable maximum number of open files 64000 maximum number of processes 64000 It is taking 50seconds to complete query. How to allocate ...
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0answers
75 views

Prdouction Database went into restoring mode

Yesterday one of my production database went into restoring mode,but fortunately i recovered it using below query USE MASTER EXEC SP_CONFIGURE 'Allow updates',1 RECONFIGURE WITH OVERRIDE GO EXEC ...
1
vote
2answers
193 views

How can I make an automatic copy of a MySQL database to another MySQL database on the same server?

I have two MySQL databases called LIVE and REPORTS on the same server. I want to copy the LIVE database and all its contents into the REPORTS database everyday at a specific time frame between 1 am ...
2
votes
1answer
100 views

Two Databases on same server handle date differently

I have two databases on the same server, one is a backup of the other from a few weeks ago. I have a third party application that has started misbehaving. It logs the LastLoginDate of a particular ...
5
votes
2answers
3k views

Update Statement takes forever to complete [closed]

I have table around 1250000 records, and 80 columns Table Structure CREATE TABLE [dbo].[Table] ( [Column1] [int] IDENTITY(1, 1) NOT FOR REPLICATION NOT NULL, [Column2] [int] NULL, [Column3] [int] ...
1
vote
2answers
54 views

Connect Two MYSQL Databases

I have two servers. Eg. server A and server B. I want to select data from server A and insert into server B using MYSQL. How to make it? I can access server A's database remotely from server B but i ...
2
votes
2answers
58 views

How to optimize performance of backup process? Servers go down during backup

The context - So I am an intern (So I'll appreciate a more noob friendly response) and we have several websites on a server of which we do a backup daily, at midnight. We use MongoDB and there's a ...
0
votes
0answers
159 views

Merging time series in influxdb 0.9.x

I have a system which demands monitoring its metrics. In order to do that I use grafana + influxdb. The version of influxdb I currently use is 0.9.x. I want to be able to calculate some statistics. ...
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vote
0answers
71 views

SQLPlus TNS:protocol adapter error

i have two Oracle 12c instances. currently both are shutdown. when I try to connect with sqlplus / as sysdba it says tns protocol adapter error contents of tnsnames.ora are DB12102 = (DESCRIPTION = ...
16
votes
2answers
296 views

Why is it taking longer to create an index after column size increases?

Our vendor changed column widths on almost every column in the entire database. The database is around 7TB, 9000+ tables. We are trying to create an index on a table that has 5.5billion rows. Before ...
0
votes
3answers
865 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
0answers
124 views

Oracle RAC Database software installation failing after successful Grid installation

2 node installation. Grid successfully installed. RAC DB software installation fails on node 2. Logs below: ****Oracle Services For Microsoft Transaction Server failed**** Node 1 (installation ...
0
votes
0answers
87 views

Database design recommendation for a workflow-enabled ticketing application

I am working on a ticketing application; tickets are created and they need to be resolved. A ticket needs to go through many steps (in this case 4 steps). Not just a single user in my application can ...
1
vote
2answers
222 views

How to change dbid in oracle to specific value?

I want to change dbid of oracle 11g database. Current dbid = 2241883xxx And want to set dbid = 1380515xxx
0
votes
1answer
170 views

Mongo error : Could not lock auth data update lock. on root user

i have a mongodb on 2.6.9. my connected user is root: mongo --username myadmin --password thepassword --port 27018 --host 127.0.0.1 admin MongoDB shell version: 2.6.9 connecting to: ...
2
votes
1answer
177 views

SQL*Loader-926, ORA-04031 unable to allocate x bytes of shared memory

A customer received this error while importing serveral files. The import routine (VB.NET) is using SQL*Loader (Release 11.2.0.3.0) via Process on each table separately (64 in total) and is called ...
1
vote
1answer
376 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 ...