The discipline of Operational and Architectural Management of Database Systems.

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11k views

I have mistakenly deleted Datafiles.

In my production server I have mistakenly deleted datafiles. When I am trying to open the database I am getting an error. The files are not important but the database is not opening up. SQL> ...
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1answer
52 views

Putting some calculations on a database entry from phpmyadmin

I am creating an online store website for sale/purchase. I have to put a specific percentage of an amount (User enters) in database. for example If user enters 100. I have to deduct 30% of it and I ...
4
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1answer
826 views

Postgres pg_basebackup reports directory exists but is not empty

I have postgreSQL 9.4.1 installed on a Win 2012 Server. I am looking to setup replication between this and another server of the same spec. So I am following guidance on preparing the master ...
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1answer
2k views

MySQL : “FLUSH TABLES WITH READ LOCK” started automatically

I would like to understand how this happened. I was running a query that would take a long time, but should not lock up any table. However, my dbs were practically down - it seems like it was being ...
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1answer
47 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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2answers
1k views

Why is Postgres on RDS maxing out on CPU every few hours?

Using Amazon RDS, we are running ETL scripts to migrate our data. However, every few hours there is a huge CPU spike. Here are the ETL specs (per ETL): 50 records inserted / second pool of 1000 ...
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0answers
152 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 ...
2
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2answers
7k views

Help with SQL Server Error “ad Hoc access to OLE DB Provider 'Microsoft.ACE.OLEDB.12.0'”

So we have an interesting issue where users are receiving the following error when attempting to query a view in SQL Server 2008 R2: Msg 7415, Level 16, State 1, Line 1 Ad hoc access to OLE DB ...
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1answer
175 views

Trying to add permission to a Role is failing

I am trying to add a role into Create and Restore permissions and After researching online, it sounds like it should be as easy as using the GRANT statement. So far so good. However, my simple grant ...
3
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1answer
396 views

Sharing PostgreSQL database on one dual-boot machine without duplication (cross-platform)

I have PostgreSQL 9.4 installed on a dual-boot machine (both on Win 7 and Ubuntu 14.10). The two systems share a drive (NTFS-formated) which includes a PSQL database directory which was created under ...
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5answers
381 views

Getting Data Back after Wrong Data Restore in SQL Server

I would like to inquire if there is an possible way to return lost data that stored in a Sql server Database after making a wrong database restore? I know it is extremely hard to get a positive ...
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0answers
43 views

How do I create an after Trigger in sql for a price reduction?

So im trying to do this for a personal project of mine just as a hobby kind of thing. What i need help with is that im not sure how to put a SQL After trigger for something i want to try. What i have ...
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0answers
160 views

How to downgrade Oracle Database from 11gr2 to 10g?

In certain situation i have to downgrade from 11gr2 to 10g but coudn't find right way to downgrade. Can you please give a right direction and possible causes to Database.!
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0answers
49 views

Forcing FK constraint to validated in system catalog

I have a big table (~60gigs, 35mill+ rows) that I need to add a FK to. Adding a FK directly to the table causes a validation which runs for about 30secs that I want avoid as it's a 30sec access ...
2
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2answers
378 views

Should a SQL Server DBA know Windows Server and vice versa? Are these roles soon to become synonymous. Or at least more encapsulated/?

I have Jr. experience with SQL Server and a desire to dive deep into Windows System Administration. Are these fields too separate to combine skill sets? Would I be marketable as a Windows Admin who ...
0
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1answer
93 views

Mysql Multiple data files rollover size

we want to setup the mysql ibdata files in such a way that after every 100M , new data is added to another file specified in innodb_data_file_path i.e. innodb_data_file_path=ibdata1:100M;ibdata2:100M:...
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0answers
48 views

DB2 Fixpack 10 install missing folder!

Hello everyone that are reading this! I'm trying to perform a fixpack install into DB2 9.7 version database in a linux 64 bits server. i terminate my database, stop my instance. And when i try to ...
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1answer
143 views

Add '%' sign to MySQL results

I am using a query to calculate total percentage but I want a '%' symbol to appear next to it. Any ideas that could help me My query so far is SELECT student.StudentID, student.Name, ROUND ...
3
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1answer
216 views

Unable to start SQL Server Browser service in Sql server 2005 [closed]

we are unable to start the SQL browser service on one of our machine with below error: I believe this to be the reason, why we could not connect to the instance with below error: I tried ...
0
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3answers
921 views

MySQL Exporting a query to text file via Cron Job

I'm in the beginning stages of hacking together code that syncs two completely different pieces of software/webware. I'm looking for a way to run a SQL query and output the results to a text file. I'd ...
0
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1answer
54 views

Any tips to watch out for when setting one of my databases to Read Only?

Our front end application uses\ pointed to a different database now in SQL Server 2008R2 in the same instance, so to prevent users from accidentally updating data in the old production database, is it ...
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2answers
101 views

Sql Server Fill Factor - Restart sql server services

I changed the Fill Factor option from 1 to 75. When I run a query that displays the fill Factor I am seeing 75 But I read online that I have to stop and start the sql Server services inorder for ...
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0answers
32 views

SQL Server to Oracle migration

Converted model resulted into incomplete script generation as all stored procedures, triggers and views were missing, only table structures were generated and i did not get any error messages for it. ...
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0answers
23 views

Load data into central database

We have 150 databases at different locations. These databases need to be move into central database. currently, i am using transactional replication, but facing lot of issues. are there any other ...
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1answer
252 views

Sql Server audit could not write to the security log

I am following the training kit for 70-462(Administering Microsoft SQL Server 2012 Databases), and stuck on Auditing SQL Server instances lesson. I have created new user in domain controller, assign ...
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1answer
3k views

Transpose MySQL rows as column names - DYNAMIC

My goal is to be able to calculate the time difference between the ticket timestamp being created and closed and if reopened Add time from being reopened to closed again etc.. I have an existing mySQL ...
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1answer
63 views

Should my application utilize database credentials for user login?

I'm working on an application that has an ASP front end and a SQL Server database. The way credential management is currently performed is there is a custom built User Table in the database that ...
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1answer
102 views

Server has antivirus. Do I need to enable external locking on MySQL?

From MySQL docs: If you only read tables with other programs, external locking is not required Assuming the bytes of MySQL files does not match viruses, the antivirus will not change the ...
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1answer
191 views

Best away to keep monthly records of loans

I'm trying to make a database to keep records of the amounts payed on a loan on a monthly basis. I already have tables for the clients, accounts, products and loans: create table product( id ...
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0answers
990 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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3answers
5k views

MySQL Table not repairing

Table info: Database name: user_motiva Table name: wp_options.frm wp_options.MYD wp_options.MYI wp_options.TMD when I do a mysqlcheck -r --all-databases it gets hung on that table even if you ...
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7answers
913 views

Where can I find some guidance on index strategies?

Most of us will probably agree that using database indexes is good. Too many indexes and performance can actually be degraded. As a general rule, which fields should be indexed? Which fields should ...
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1answer
209 views

Is this a good case for multiple SQL Server instances on a VM?

We have a suite of applications utilizing SQL Server have the following characteristics: Users create/destroy DBs via a UI, so DBs appear/disappear without DBA assistance. DBs of the same name can ...
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1answer
153 views

Searching between dates on a CHAR type field

I have a table that has a field in which dates are stored, the problem is that the field type is CHAR(10) and I'm being asked to query for data between certain dates. I don't want to change the field ...
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0answers
31 views

Procedure Security Layer

I want discuss an idea with you and get your opinions what you think about it. From database (SQL Server 2008 R2) administration view and general security, its good practice to create DB roles and set ...
0
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2answers
108 views

Database logs growing during maintenance plan

I have read several threads and sites about SQL logs but I don't feel I have found the answer. Or if I did I did not understand it enough to address my issues. My issue: When I run my SQL maintenance ...
1
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1answer
91 views

Database backup issue in SQL Server

For security reason I always took back up of my database. I took full backup in each month. And differential in each week. I used to save each back up file in different name. I lost my latest full ...
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2answers
2k views

Incremental backup in SQL Server [closed]

I got a task for backing up my clients data through internet. Client has about 50 GB of data there. So I need to back up the data and pass through internet, but it takes about 8 to 9 hours for this ...
3
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2answers
881 views

query to find all dblink()

Besides manually searching for all the dblink() used in triggers/functions/stored procedures is there a way to query for this information? Example: There is a dblink inside of a trigger, can I select ...
3
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1answer
5k views

Cannot browse for Backup files using SSMS [duplicate]

I'm facing a strange problem. When I try to backup or restore any database using a SQL Server user (not sa) that belongs only to "public" server role, i have the following error when i click the ...
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2answers
345 views

Is there any other way that we can take auto backup in oracle 11g apart from RMAN?

I have tried with RMAN. But is there any other possible way that we can backup database and tables. backup using queries or stored procedures is possible?
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0answers
107 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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1answer
79 views

ExecuteNonQuery () not fungsional and database failed [closed]

Public Class Form1 Private Sub Form1_Load(sender As System.Object, e As System.EventArgs) Handles MyBase.Load Dim SumberDb As String = "Data Source=c:\users\ogieuntung\documents\visual studio ...
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0answers
36 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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0answers
624 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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0answers
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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2answers
88 views

MySQL Image Queries

I have table employees in MySql database with Id, Name, Gender, HireDate, Photo. Photo field is blob. Now when I run this query: SELECT id FROM employees WHERE Photo IS NULL ; it takes forever to ...
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2answers
140 views

How to Permanently solve MySQL error 2002 (HY000)

I have a problem on my cloud server with 2GB of RAM and 40GB Hard Disk that's hosting a Wordpress website that receives around 1000-2000 hits a day. My problem is that MySQL is always crashing and my ...
0
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1answer
54 views

What is different between fixed-size disk pages and disk-based?

As per my knowledge, i understand fixed page size as size of page which used for read and write data but i am not able to understand what does mean of disk based ? I read these words from this paper ...
1
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1answer
2k views

Optimizing Amazon RDS - MySQLTuner Recommendations / Feedback & Suggestions

I'm currently trying to optimize a database I've inherited for speed. The server is an Amazon RDS db.m3.large instance: 2 VCPUs 7.5 GB Memory 500 GB HDD My current strategy is to do the following:...