The discipline of Operational and Architectural Management of Database Systems.

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0answers
11 views

What means Buffer Pool/Hit Ratio(%) in Oracle Counter?

I found the buffer pool hit ratio percentage at Oracle database metrics / Oracle Counter. I want to know about this buffer pool detail. Kindly answer to me.
1
vote
0answers
36 views

How to recover Database System MDF and Ldf files and transaction ldf lifes [on hold]

Here is something as new to DBA i had to face that put me in a fix. There was an encryption activity that was scheduled to happen on System and User DB Data files in Drive: x as well as Transction log ...
0
votes
0answers
42 views

Size of Table Now vs 2 Years ago [on hold]

I am trying to Analyze the growth of the data/tables within a database. I would like to analyze how much Data is currently present in a table and how much there was 2 years ago. There are date fields ...
1
vote
3answers
21 views

Allowing users to compile / run PLSQL and SQL

As a DBA - assuming my users are knowledgeable with PLSQL and SQL - why would I not grant my users privileges to compile and run their own PLSQL code. We have an MI database environment where the data ...
0
votes
1answer
23 views

Notification when the status on sql server replication is “Not Running”

We have a lot of replications set up. Sometimes for some reason, the status of the replication changes to "Not Running/Expired Soon or Expired". Could you please let me know if there is a way we can ...
-1
votes
0answers
21 views

set up centrally accessible Microsoft SQL server [closed]

We want to setup a Microsoft sql server hosting the database. We want to access this database from different geographical regions. Also I need to provide access to a limited number of people (Admin ...
-1
votes
0answers
16 views

Import multiple XML documents in Access 2007 [closed]

I have recently created an Access 2007 database, were I import an XML file and run a macro which splits up at the information in to a readable format for myself. Is there anyway I can import multiple ...
0
votes
0answers
24 views

How alter on infobright (BRIGHTHOUSE storage engine) actually works

I have been using infobright-3.4.1 (5.1.40) for data warehousing. I know it is outdated version but there no plan to upgrade the version currently. Even though infobright is build on mysql, the way it ...
0
votes
1answer
54 views

MySQL Performances Issues

I'm in debate with my database admin. He claims that my queries I'm sending through PHP are the problem and he is stating several things I believe are completely false. To begin I have a site ...
0
votes
1answer
18 views

Data distribution in mongos with shards or replica sets

I am a newbie to mongodb.I have set an mongodb architecture with a single mongo shard(mongos) connected to three shards(replica sets) with three config servers. The architecture looks as below: Now ...
0
votes
0answers
24 views

How to enable implicit casts in PostgreSQL >=9.2?

Coming from this topic on SO a user suggest me to enable implicit casts in my PostgreSQL and I don't know how to do that. I also don't know if this is a good practice or if it's the solution to the ...
0
votes
1answer
36 views

Stored proc getting ANSI_NULLS and ANSI_WARNINGS error when executed by application

I have a stored procedure that is getting the following error when executed via an application : Heterogeneous queries require the ANSI_NULLS and ANSI_WARNINGS options to be set for the ...
1
vote
0answers
17 views

Where to put standby control file in Physical standby database?

I am creating a physical standby database for which I am creating a standby control file using command = ALTER DATABASE CREATE STANDBY CONTROLFILE AS '/oracle/dbs/stbycf.ctl'; but It creates only one ...
0
votes
1answer
40 views

How can I quantify the business value of normalization?

My company is developing an internal application with a SQL server database which was started earlier by another developer. Now I am Looking at the model,the developer has stopped at 1NF. I proposed ...
0
votes
1answer
23 views

Indicators for right balance of the number of DB2 instances per AIX LPAR

I have a question that has been bugging me, but I just don't know how to validate it. We run DB2 LUW on AIX in our shop. Our AIX is currently at 7.1. Our DB2 is at 9.7 FP 4 for most installations and ...
0
votes
1answer
35 views

Exadata RMAN vs. Non-Exadata RMAN - any differences?

Can you please let me know the differences, if any, in the architecture of the non-Exadata RMAN vs. that of the Exadata-RMAN from an SBT plugin perspective? Have you observed from your vast ...
-2
votes
1answer
36 views

opening_database

When I try to create user in the sqlplus, it raises an error at line 1 ORA-01219: database not open: queries allowed on fixed tables/views only. How to correct this error? Please help me out.
0
votes
0answers
28 views

mirroring on sql server 2012 on different windows server 2012

I have 2 servers *.203 and *.205 I have sql server 2012 on each of them I tried to make mirroring between them every thing goes successfuly but when I tried to start mirroring it gives me ...
0
votes
0answers
20 views

Differing AUTO_INCREMENT values between 5.1 vs 5.6 slaves

I have a MySQL 5.6.21 slave and a MySQL 5.1.73 slave that are both replicating from the same MySQL 5.1.73 master. I noticed that for several of the tables ( I said several because when I try to rerun ...
0
votes
0answers
12 views

SQL nodes in MySQL Cluster

I running mysql cluster in windows 8.1 on 3 machines 2 mngmd 2 sql node 3 data nodes in the first machine I tried to connect MySQL server with localhost and tried to put my old database it ...
0
votes
3answers
72 views

Database Design for Paper Submission System

I am learner of Database design, I want to design a database for a journal paper submission system in which one paper can be submitted by one or more author. I have initially two tables Author and ...
0
votes
0answers
21 views

MySQL performance_schema not working properly?

I have MySQL 5.6.19 community server running on my Ubuntu 14.04. Lately I have been trying to monitor MySQL server using performance_schema. Previously I used to do this by running SHOW FULL ...
0
votes
0answers
29 views

Last synchronization time between master and slave (replication)

During replication process where a Master is connected with slave. Some times connection between these two goes down. Any options to get the details of the last synchronization time?
1
vote
1answer
41 views

many Servers of SQL server 2012 needs mirroring

I have two SQL server 2012 instances and I want to configure mirroring between the 2 servers with database. My questions are: How can it automatically change host of one if the other one was dropped ...
0
votes
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 ...
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 ...
1
vote
1answer
38 views

DB2 Commands — Different ways of stopping database

I'm hoping to get a more in-depth explanation of the following DB2 commands, which all relate to stopping the database in some way, and how they differ from each other. How do DBAs think about these ...
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 ...
0
votes
1answer
24 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
votes
0answers
27 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
votes
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
votes
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 ...
2
votes
2answers
150 views

Stored procedure takes 18 seconds on first load, 0 seconds on subsequent loads, waiting several minutes makes it slow again

I have a stored procedure that returns a lot of data for a business dashboard. On first load it takes 18 seconds, after that it takes 0 seconds, even if I change the input parameters at random it ...
0
votes
2answers
54 views

Restore Database with Multiple Restore commands

For automation, I have to dynamically construct the restore commands and thus I have created a script. A .bak file is created on a remote server and I receive it daily. The script builds the restore ...
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 ...
0
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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 ...
0
votes
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 ...
9
votes
1answer
188 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 ...
-4
votes
1answer
68 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?
5
votes
1answer
173 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 ...
0
votes
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 ...
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 ...
0
votes
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 ...
1
vote
1answer
25 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 ...
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 ...
1
vote
1answer
163 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 ...
0
votes
0answers
276 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 ...
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
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 ...
-2
votes
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...!!!?