The discipline of Operational and Architectural Management of Database Systems.

learn more… | top users | synonyms

0
votes
0answers
4 views

Database migration from SQL2005 to SQL 2012. SQL groups Creation with Securables

I moved 7 databases to MS SQL server 2005 to MS SQLserver 2012. Both SQl are on different servers. I copied window level user group and created SQL server level groups in SQL server 2012. Now my ...
0
votes
0answers
22 views

SQL Server Job does not execute when scheduled, but does execute manually, how do I get it to run as scheduled? [duplicate]

I am running SQL Server 2014 SP 1 CU 5. The job did work in the past. The schedule is enabled. The account it is running under is an ADS account which has sysadmin rights and has delete rights to the ...
0
votes
0answers
18 views

Cannot Start MongoDB

I cannot start MongoDB on Debian(Jessie 8.4 Stable). I generated the keyfile and added the path to the key file to the configuration and uncommented the "auth=true" but when I try to start the service ...
1
vote
2answers
39 views

Dedicated SQL instance vs multiple database same server instance

Looking for best practice advice for a sprawling network. I inherited a bunch of SQL servers. The practice has been to just stand up a new VM instance any time a database was needed or add a new SQL ...
0
votes
0answers
8 views

which database to use with FileNet [on hold]

hello to all database individuals. I would like to try file-net from IBM company. i am in database option choice!! I am wondering, which database is better for file-net SQL or oracle?! Please help;,
0
votes
0answers
19 views

RMAN Duplicate internal operation [on hold]

How RMAN Duplicate works internally?Please explain in detail how RMAN picks the latest backup and duplicate works
1
vote
1answer
32 views

Importing Oracle12c database

i am using Oracle 12c in debian Jessie i want to import an old database exported with expdp on oracle 12c when i try to launch the commande 'impdp' i got those errors : 'ORA-39002: invalid operation' ...
-4
votes
0answers
29 views

what prerequisite are required to become a DBA?not overview but to the depth of course [duplicate]

what prerequisite are required to become a DBA?not overview but to the depth of course if any online link is there to learn or course to become DBA then let me know
0
votes
0answers
14 views

For about ~50,000 - 100,000 records, how much RAM is required for analysing? [closed]

I'm working on A Python Data Analysis Project. The Database would contain about ~50,000 to ~100,000 records. How much Ram would I need perform the processing in how much time? i'm working on 64 bit ...
3
votes
3answers
33 views

Call to default values (MySQL) in a procedure

For the sake of an experiment, we're working with the following procedure (same DB, multiple tables): delimiter // CREATE PROCEDURE mysql.insertTables (_first_name varchar(30), _last_name ...
1
vote
2answers
79 views

How can I remove 'Using temporary ' and speed up my query

Hi I was working for hours to speed up this query using indexes, but its useless.. im tyring to optimize by eliminating 'Using temporary' and using only indexes. I wonder if there is another ...
0
votes
0answers
32 views

Error ORA-12547: TNS:lost contact

I installed Oracle12c Database in my server i run SQLPLUS with the command 'sqlplus /nolog' and when i type 'conn sys /as sysdba' i got this error ORA-12547: TNS:lost contact Can you help me ...
0
votes
0answers
14 views

Diagnosing why postgresql query is going in a seemingly endless processing loop

I maintain a social forum built with Django and postgresql 9.3.10. There's a maintenance query I run via psql, to clean up my postgresql table. It goes like this: begin; DELETE FROM links_seen WHERE ...
2
votes
1answer
23 views

Count of range on datetime in MySql

I want to group table entries for each userId only if they are consecutive entries in the table. I have a table like this. id userId transactionTime 1 1 2016-04-13 22:15:44 2 1 ...
0
votes
0answers
10 views

don't understand atquery command script [migrated]

I'm using a big-data database. in one of it's tutorial it has recommended me to use below bash scripts if order to running queries: #!/bin/sh # this will launch the real atquery program with the ...
3
votes
2answers
138 views

Best fill factor for GUID clustering key

We have a database that uses GUIDs for most of their columns in a data (non sequential). Does anyone have any best recommendations for fill factors on a GUID database in an hgih insert/update ...
0
votes
1answer
38 views

I'm a beginner, studying Data modelling as part of my course. I'm having trouble understanding Normalisation. How can i improve?

It was difficult to frame the title given the word limit, so apologies for that. Currently I'm studying DBA and Data modelling as a part of my ICT Apprenticeship course in a Web Development team. I'm ...
0
votes
0answers
48 views

RDS MySQL memory usage question

I have an instance of RDS of MySQL 5.7.10 I am on a package: db.t2.micro which grants me 1vCPU and 1Gib of memory. I am using Monitoring window to monitor the CPU/Memory usage. I do not understand ...
0
votes
0answers
10 views

Remedying psycopg2:OperationalError in postgresql 9.3.10 database

I have a Django app + postgresql 9.3 DB, hosted on Ubuntu VM. Recently my VM ran out of disk space, resulting in no space left on device errors showing up in my logs. I cleared the space on the device ...
0
votes
1answer
62 views

Error launching sqlplus

I try to run sqlplus on my server with the command sqlplus /as sysdba and I got this error sqlplus: error while loading shared libraries: ...
0
votes
1answer
31 views

Table/database design question

Suppose you have these fields to keep track of in records: (first_name, last_name, state_id, stateid_status, day, month, year, id_status, id, criminal_status, charge, plea, sentence, create_time, ...
6
votes
1answer
1k views

What to do when handed a server the first time?

I'm a new SQL Server DBA in a new company. Just recently, they have handed me access to the server. There are about 50 OLTP databases with different sizes, some ranging 250MB and the biggest database ...
0
votes
1answer
23 views

Check is there is an Empty Column Value

Let's say we have a Table in MySQL Database called TAB1 that Contains two Columns col1 : col2 . the question is : is there a way to check is any of these Columns Contain a Null or Empty Value? for the ...
0
votes
1answer
14 views

Install MongoDB on Debian

I tried to install MongoDB using this command: apt-get install mongodb=3.0.1 But the version 3.0.1 was not found. How can I install it?
1
vote
0answers
39 views

How can I partition records vertically across machines?

I recently asked two questions: (1) how to store and connect partial records in two or more machines, with the record halves correctly associated, and (2) how to determine the increase in time/space ...
2
votes
2answers
42 views

Is an Oracle 10g instance dependent on the windows account authentication?

I have created an Oracle 10g (10.2.0.4) instance on a Windows 2003 Server with a domain user xxx having domain administrator level privileges. Now I wish to change xxx's password. Will it impact the ...
0
votes
1answer
16 views

mySQL Event Help - Update colum value for each row every 15 minutes

Okay so if I have a login database: id | email | pass | attempts ---------------------------- 1 | "" | "" | 4 2 | "" | "" | 2 Attempts marks the number of attempts made at logging ...
-1
votes
2answers
42 views

Good learning source for learning normalization [closed]

Can anyone recommend a good learning source to learn about database normalization from scratch please? I referred to many youtube videos but they weren't fit to me.
0
votes
1answer
30 views

Should my database be on the same server as my web server?

We are about to add user login and management to a high traffic website. I am wondering if I should put the postgres database on the same server or put it in a different node in the internal ...
-4
votes
1answer
27 views

SQL Server Table Creation Help [closed]

I'm a newbie, taking University course on DBA with Microsoft SQL Server and trying to write my first manual create table table but I keep getting errors in query or in using SQL Fiddle My attempt is ...
-1
votes
1answer
14 views

SQL Server MIRRORING - FAIL ON SECONDARY

I have a problem in the SQL Server Mirroring. Current system: Server: S1 (Principal) & S2 (Secondary) Databases: D1 (2.5TB) & D2 (20GB) Situation 1: without witness 1. D1 & D2 were ...
1
vote
2answers
27 views

Insufficient disk space in Filegroup

One of my jobs is failing and it shows below message. Error: Could not allocate a new page for database 'Reporting' because of insufficient disk space in Filegroup ‘PRIMARY’. Create the necessary ...
0
votes
1answer
28 views

Oracle 11G, Move indexes from one datafile to another

I have an Oracle 11G DB installed on Windows Server 2008 SP2 64bit OS. Below is some data files usage statistics: As you can see, there are two files: index01.dbf and index02.dbf belong to the same ...
0
votes
0answers
49 views

Database as it is raw content

recently I asked my hosting company to give the backup of my database . I asked them to create a new database and import backup to that database. But they reply cannot dump database ...
0
votes
2answers
41 views

could not allocate a new page for database [closed]

Could not allocate a new page for database 'bteexamination' because of insufficient disk space in filegroup 'PRIMARY'. Create the necessary space by dropping objects in the filegroup, adding ...
0
votes
1answer
19 views

How can I set maxIdleTimeMS by command line or mongo-shell?

So, I have deployed my PHP application (using Laravel). However , I've noticed a high connection number in connection pool. I would like to know how could I to set the maxIdleTimeMS parameter through ...
0
votes
0answers
16 views

3023 : File serialization issue with transaction log backups

I am trying to take a transaction log backup on one of the AO replica servers. It throws an error saying that backup operations must be serialized. I googled this and found that only one backup should ...
1
vote
4answers
53 views

User privileges error on server maria db Create trigger Drop trigger

User privileges error on server maria db User : user1 DB : db1 Error 15:00:46 DROP TRIGGER IF EXISTS audit_trigger Error Code: 1419. You do not have the SUPER privilege and binary logging ...
0
votes
2answers
49 views

MySQL Backup Strategy

We are running the backup from the replication server and it is working good, since we are not facing any other issues, some information for better understanding our strategy: Backup Type: Full ...
0
votes
1answer
30 views

To use tpc-h benchmark its really necessary create primary and foreign keys?

Im doing some tests with tpc-h benchmark. And Im with a doubt, and I didnt find any answer. The tpch-h benchmark simulates a data warehouse environment. And the most important here are the queries ...
0
votes
2answers
50 views

Practical Aspects of Making Changes to Databases [closed]

I am setting up my first database and have gone through the standard process of studying the business logic, figuring out the entities, associated fields and dependencies. This is the ...
0
votes
1answer
41 views

MySQL ADD KEY meaning

This code below is creating a primary key on table User, but Im not understanding the second ADD KEY (C_NATIONKEY), do you know what is doing? Its something about foreign keys? ALTER TABLE USER ADD ...
0
votes
1answer
110 views

Huge database… queries too slow. How to improve performance? [closed]

I'm currently managing a MySQL database with 30 million rows(many more to come). The entire database is 280GB. The server has 4GB of RAM and 3.2Ghz 4 core processor. The largest column stores an array ...
0
votes
1answer
61 views

ORA-29913 and ORA-30653 error selecting an external table

I created an external table using a .tbl file and now Im trying to select all rows from that table, using: select * from users_load; But Im getting this error: ORA-29913: error in executing ...
0
votes
1answer
56 views

Starting MySQL… ERROR! The server quit without updating PID file (/var/lib/mysql/SI-CloudDB-003.pid)

I have changed mysql (5.6.29 linux centos 6.6 final) port from 3306 to 3310 and getting below error and its work fine with 3306. Starting MySQL... ERROR! The server quit without updating PID file ...
2
votes
1answer
203 views

VMWare VMotion causing performance to increase?

We've been experiencing strange issues for awhile now with our virtual environment running SQL Servers. We randomly get calls from users about very poor performance on the SQL boxes. Sure enough when ...
0
votes
1answer
61 views

Apply SP3 on SQL Server 2012 AlwaysOn AAGs

If Always-On is configured, while applying Service Pack, should I: Directly move SQL Server Instance (Secondary Replica) to make it passive and apply Service Pack Or First move Availability Group ...
0
votes
1answer
39 views

Always-On Configuration Clarifications

Do we have to Install stand-alone instances of SQL Server 2012 or Failover-Cluster SQL Server Instances while configuring Always-On? I am asking this question because I saw few configurations using ...
2
votes
1answer
46 views

Is it normal that our Wordpress' database crashed multiple times in this month alone?

I just started a new job at a small magazine as an IT guy. It all worked fine, but I'm worried about some issues with our VPS installation. Since I started working here (26 days ago), our Wordpress' ...
1
vote
1answer
83 views

MongoDB allocates chunks only to Primary when sharding is enabled

I'm setting up an instance of MongoDB with 3 shards. I've setup everything seemingly correctly by following the docs and comparing my config with that of a friend who has a similar setup but with a ...