The discipline of Operational and Architectural Management of Database Systems.

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Is it Possible to Rollback Table Deletion in Mysql [duplicate]

We Have Mistakenly Dropped a Table in my DB and am using MySql . Is it Possible to ROLL Back or any other options . Please Provide your Valuable Suggestions
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1answer
39 views

Failed to attach SQL Express DB, Could not continue scan with NOLOCK

We have a remote client that had to rebuild their server and has been having trouble with their SQL Express database since. I cannot remotely connect to this client unfortunately. I had them run "DBCC ...
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69 views

What is the motivation for modern database systems? [closed]

What is the motivation for modern database systems? I know what database systems is but what is modern database and what is the motivation. Does modern database systems mean how data is managed in ...
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2answers
52 views

System Databases Integrity Check & Full Backup

I have an SQL Server 2008 and for maintenance solutions I use Ola Hallengren scripts. Recently, out of 15 databases I have on this server, I made two changes in three of them (not system databases, ...
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27 views

How to bucketize using Query optimal bucketization algorithm

I am trying to implement query optimal bucketization algorithm (QOB). The input of the algorithm is D=(V,F) where V is the value of the attribute and F is the frequency of occurrence. For EXAMPLE D ...
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1answer
50 views

IBM Bluemix SQL Database service data store management

I'm working on IBM Bluemix SQL Database service with premium plan. According to our application the sql service can have many schemas. Is there any way to seperate data storage of each schema to ...
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39 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 ...
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1answer
62 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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78 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 ...
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74 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 = ...
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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 ...
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1answer
445 views

The service name is invalid while starting EM on oracle 11g on windows

I am trying to start EM on oracle 11g on Windows. When I performed emctl start dbconsole It shows The service name is invalid more help is available on net helpmsg 2185 and when I wrote net ...
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304 views

Records not getting replicate from Mysql 5.5.32 to MySQL 5.6

I have a MySQL 5.5.32 server (community edition) on one Linux server which is master. I have a MySQL 5.6 server (community edition) on another Linux server which is slave. I have installed various ...
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1answer
21 views

MySQL NDBcluster 7.3 limitation on Table Joining in a single SQL statement

I am a novice user of Mysql database and recently my company is evaluating MySQL Cluster for its shared nothing architecture and synchronised replication. However my colleagues informed me that the ...
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473 views

Linked Server vs. Ad Hoc (OpenRowset / OpenDatasource) Distributed Queries

I have an application which needs to grab data from different clients' databases that reside at the client's location. So alongside their normal details such as company name, address etc, I also store ...
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34 views

Managing logs generated by user

I am developing a web app for my client and there is a section which displays the changes made in the application by any of the user. This section is known as log.It basically stores and displays the ...
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1answer
99 views

With LocalAdmin become sysadmin SQL Server

I am a local Admin on my machine. Same old thing, my account wasnt added when SQL Server was installed, and I don't want to have to reinstall SQL Server. I went through this blog and it worked until ...
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115 views

Data compression within Internal Tables in SQL server 2008R2

We are doing downgrade from enterprise to standard for couple of servers which are not using any enterprise features: For one of our TFS(Team foundation server) database TFS_resx, when we ran ...
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1answer
92 views

Moving SQL Server 2012 Database to SQL Server 2008 R2

I follow the answer of Mr. Kin in this post How to move a database from SQL Server 2012 to SQL Server 2005 I run the query without errors, but when I check my blank database created on SQL Server ...
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1answer
46 views

Manage max table storage space in case of excess data (size in GB)

My scenario is that I am using sql server 2008 r2 on my end. I have created a database named testDB. I have a lot of tables with some log tables in this. some tables have contain lakhs of records in ...
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1answer
226 views

MySQL partitioning table by date and hour

I have a table with a timestamp field. This table will have millions of rows every day so the idea is to create partitions by date and hour. Every day I will delete partitions older than 10 days and ...
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0answers
941 views

upgrading posgresql 9.0 to 9.4 with pg_upgrade on CentOS 6.6

I'm trying to upgrade a postgres v9.0 database to v9.4 with pg_upgrade on CentOS 6.6, but I keep hitting a wall. I am calling pg_upgrade thru a shell script as postgres, first exporting the needed ...
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144 views

Export entire Oracle schema to ASCII and import into DB2

I'm looking for a solution to export a number of schemas from Oracle to ASCII or other flat file format. The data then has to be read by DB2 import. Does anyone know the what oracle export commands ...
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105 views

How does SQL Server know it was abnormally shutdown last time [closed]

I am doing background reading on this. Would like to know how does SQL Server know it was abnormally shutdown last time?
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35 views

DB2 Change Journal Receiver Size

We are running DB2 on our iSeries, and there is a journal + journal receiver created. The current size of the journal receiver is 200MB (found using the DSPJRNRCVA command). Is there a way to change ...
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555 views

Reducing the size of a PostgreSQL Database, utilizing a process other than full VACUUM

We have a Postgres 8.4 installation which hosts both our Defect tracking and Code management (Surround) systems. We are looking at converting and migrating Surround to MSSQL on another server. Our ...
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2answers
56 views

Is there an easy way to update connection strings to a database moved to a different instance

I have created a new instance of SQL Server 2008 r2 and exported my database to the new instance. Then I realized that the connection string for all of my datasets still point to the original ...
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151 views

Severity 20 Error upon disconnecting Dedicated Administrator Connection

Starting working with Dedicated Administrator Connections on SQL Server 2008 R2 servers. All is working fine (once port 1434 was opened), but am getting severity 20 errors when I disconnect the admin ...
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1answer
3k views

Not receiving archivelogs from production to remote side

I have a scenario in which we have Designed data guard. Where we have 2 standby sides. One standby is located locally and 2nd standby is located on remote side. The distance between local and remote ...
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229 views

File group space problem

I'm having some problems with my database usage space. I have a database with autogrowth off and limited size to 150GB. When users try to import files, large databases or other massive transaction ...
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24 views

CHKDB is marked RESTORING

I am seeing this in my Microsoft SQL Server 2008 R2 (SP1) database log: The database 'CHKDB_dbname' is marked RESTORING and is in a state that does not allow recovery to be run. This occurred ...
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122 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 ...
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78 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 ...
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41 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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46 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 ...
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1answer
235 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 ...
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3answers
354 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 ...
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1answer
49 views

Shared emails in a database [closed]

We lost our database administrator over a year ago - and even then she was promoted into the job internally and sort of learned on the job. Basically I say this to establish that strong data standards ...
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6k views

Truncating Table Partitions Containing Data and Global Indexes

I have to truncate a partition (392,000 records) of a table with 20.000.000 records. At the moment, I'm making a truncate table and rebuilding indexes. But the table has 37 indexes and it takes 20 ...
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1answer
216 views

Difference between sql agent account logged in as NTLM and UPN?

Can someone please tell the difference between a sql agent account logged in as NTLM and UPN? What is the difference if the sql agent account is logged in as: domain\username and username@domain.com? ...
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148 views

Best practices for ranking records in flexible way

Suppose we have 10000 records of any product. User search on our website with his given criteria. so we output search results based on given criteria. Now Admin want to rank products in search. so ...
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1answer
62 views

How to document an archived database? [closed]

You've stored the backup file in a safe place, but what kind of info do you store with it? database type (SQL Server) compatibility level (SQL Server 2008) application name application owner ...
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1answer
169 views

addition in datetime column during insertion in mysql

i have a table with below 5 columns..timestamp is data type for timedate related column : Region event_time start_time mid_time end_time India 2013-11-03 13:00:00 America ...
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2k views

How to debug problems with SQL Server multiserver (Master and Target server) administration?

I've tried to set Mater and Target Servers on various cobinations of SQL Servers 2012 R2 on Window Server 2008 R2 and Windows 7 machines but always getting one or 2 of the following errors during ...
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1answer
414 views

Cannot grant execute to stored procedure [closed]

When I try to GRANT EXECUTE ON SP_NAME TO [DOMAIN\USER_NAME] on my database, I'm getting the error message below: Msg 8115, Level 16, State 1, Procedure grant_safety, Line 5 Arithmetic overflow error ...
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38 views

sp_spaceused and replication question

I have been replicating data from a table to 2 different locations and was just looking at sp_spaceused to see the size of the tables. I have noticed that the replicated tables are smaller than the ...
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1answer
12k views

IBM DB2 Database name not found but I can connect using IBM Data Studio. What happened?

In IBM Data Studio, I can create a connection to a remote IBM DB2 LUW database named DBEMP and browse the schema and data. Here is the steps to create the database connection: From IBM Data Studio, ...
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350 views

Database Timeout Error from VB Application

Recently we are receiving so many database timeout error from different servers we are using vb application -- which will use ODBC connection to connect database - here no problem when we run the ...
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1answer
1k views

Connecting to a SQL Server database from a Flash program [closed]

I currently have the ability to utilize Microsoft SQL Server 2012. I am developing a project with Adobe Flash Builder 4.7. If I link my database with Adobe Flash Builder is there any additional ...
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284 views

Database instance keeps restarting

From the past few days, our MySQL database instance has crashed and had to be restarted a few times. My MySQL version is 5.1.57-log. The CPU and memory usage was way below 50% during the crash time. I ...