The discipline of Operational and Architectural Management of Database Systems.

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How can I copy specific tables into one SQL Server Table into a separate table automatically?

I'm not sure if this is possible. Looking for some help with a specific issue. I am building an iPhone application with a data layer written in Ruby that will connect to SQL Server 2008. For various ...
4
votes
2answers
3k views

efficient way to poll database?

I have a Linux CentOS server hosting an Oracle 11.2 database, which communicates with an application server, which communicates with a client (a Flex application). I'll try to describe the pseudo-code ...
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2answers
2k views

How do you find home information for Oracle RAC on Unix?

Need help finding Oracle home path corresponding to a database instance in RAC environment. I am aware of few of the ways to achieve the same. Listing them below to avoid the same answers. ...
4
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1answer
2k views

When dedicated server process model should be used instead of shared process model?

It looks like Oracle shared server process model is better than dedicated server process model. In a shared server configuration, client user processes connect to a dispatcher and it can support ...
4
votes
1answer
394 views

Oracle AWR shows missing stats for SQL ID as top elapsed statement

Why SQL ID has null number of executions and elapsed time / execution in AWR report. SQL ID is among top elapsed command on AWR but no details stats whoing time / execution. Would it be because shared ...
4
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1answer
2k views

Take individual MySQL database offline

MySQL does not have any SQL commands or internal mechanisms for making an individual database unavailable / offline moving an individual database Thtis being the case, how can you take an ...
3
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5answers
207 views

Does DBA need (a read) access to virtualization infrastructure? And why?

I am in charge of monitoring, troubleshooting, tuning and optimizing a few dozens production SQL Servers 2008 R2/2012 in my company that are being run inside VMWare virtual machines. I've requested ...
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3answers
6k views

Detecting SQL Server Utilization with a query

My current project will send queries to an sql server constantly and It may use 100% of the memory or CPU. How can I check if the server is nearing full utilization in a stored procedure so that I ...
3
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2answers
1k views

VACUUM and VACUUM FULL do not return space to OS

I'm running Postgres 8.3.3. I have a postgres database on a Linux filesystem that is quite full. I've run VACUUM and VACUUM FULL, yet none of the space has been returned to the OS. When I observe ...
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2answers
1k views

Transferring Data from OLTP to OLAP databases

Systems that have both OLTP and OLAP databases periodically move data from the OLTP database to the OLAP database, so that reports can be generated based on the OLAP database. What's the official ...
3
votes
2answers
667 views

Perl vs Ksh for Unix Database Administration

I realize this is a somewhat more subjective question, but I am looking to the community for guidance. Our company is fairly new to having DBAs. We used to use DB2 for i on the IBM's iSeries servers, ...
3
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3answers
337 views

Is this database fine for calculation?

I am doing an application called as Invoice Application.For that I have my database is like this. Now my problem comes when I am taking the tax part in my database.As I have made tax as an option ...
3
votes
1answer
9k views

How do I open a MySQL Database Dump?

I work for a doctor's office, and we are in the process of switching EMR systems. The previous system has provided a physical 'dump' of the database. I however, don't know how to open this database ...
3
votes
2answers
170 views

How to identify unused databases on my sql server

I am looking for the best practices or analysis someone would have followed to identify the unused or inactive databases on my SQL Server. I went through many articles, which say possibly to go for ...
3
votes
2answers
371 views

SQL Server 2012 Compatibility

I'm converting some stuff over to be compatible with SQL Server 2012 and had a couple of questions. I'm taking out all of the sp_dboption commands and making them ALTER commands instead, but there ...
3
votes
2answers
7k views

Why database diagrams are not working when domain account is attached to database owner?

I was trying to use Database diagrams is SQL Server and got following error: Database diagram support objects cannot be installed because this database does not have a valid owner. To continue, first ...
3
votes
1answer
88 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 ...
3
votes
2answers
314 views

Reducing Log Impact During Re-Indexing

We use Ola's maintenance solution and its great. Regardless of method for re-indexing a major friction point with IT is the amount of log generated during the weekly re-indexing process. For a 1TB ...
3
votes
1answer
5k views

How to connect multiple users/schemas in Oracle 11g?

I'm almost new user to databases, so I think I'm doing something wrong. I have the database created. I created 3 users, 1 it's an Admin, 2 are just users. I created 2 roles, 1 for the Admin and 2 ...
3
votes
2answers
7k views

Disabling Checking of Schema On Function/Stored Procedure Creation

I'm trying to automate the process that executes changes to the SQL Server 2008 R2 database. The process I put in place drops and recreates my stored procedures and functions, as well as run scripts ...
3
votes
2answers
499 views

What exactly is “pinning” in relation to indexes?

When one talks about "pinning" in indexes, what exactly is this? Is there some other word/term I can search for, as google has not provided any solutions. It is part of a test question, where ...
3
votes
2answers
1k views

Problem with Czech collation Czech_CI_AI in MS SQL Server 2008 R2

I have the following issue with accent insensitive search in Czech language. My database is set to Czech_CI_AI collation. For some diacritics system works correctly (ie. I), but for some does not (ie. ...
3
votes
2answers
187 views

Can I grant privileges to a role without specifying an object?

I am trying to create a role to simplify granting a set of privileges that I often give to users. I am wondering if there is any way to grant these privileges on only the objects owned by their schema ...
3
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2answers
121 views

Deleting an Oracle database without connecting to it?

I have two databases which were created using dbca. I made some changes in the second database, and I can't login to that database anymore, and, of course, I can't delete it by using dbca. I am using ...
3
votes
3answers
378 views

Merging tables with a 1 to 1 relationship in a database

Is it a good idea to merge two tables that have a 1..1 relationship together? I have inherited a database with too many tables linked together in a 1..1 relationship. I'd like to evaluate the ...
3
votes
2answers
3k views

pt-table-checksum help required

I am trying to figure out pt-table-checksum, as I am using it for the first time. It look likes the documentation is complex and not easy to understand stuff. I have a complex replication topology ...
3
votes
2answers
127 views

Inconsistent information from different DMVs

I've a server with 12 GB of physical RAM. I just lowered its 'Max Server Memory (MB)' setting from 10 GB to 8 GB. If I look at the processes' committed memory in Perfmon, I see: select * from ...
3
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3answers
1k views

Suggestion required for Large Database Optimization and performance

We are creating a large database with estimated growth rate 200 million+ records per annum. The database is use for analysis purpose and we will generate different tabular and graphical reports from ...
3
votes
1answer
50 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 ...
3
votes
1answer
56 views

“zip” a mySQL (phpMyAdmin) database [duplicate]

I've created a large database on my local WAMP webserver. I would like to send that database with all tables and table data to another computer. Is this possible? mySQL ver: 5.5.15 PHP ver: ...
3
votes
1answer
1k views

Confused about load balancing and horizontal scaling in postgresql [closed]

Please correct me if I am wrong but I guess handling more requests and load by adding more machines or balancing the load between multiple servers is horizontal scalling. So, if I add more servers, ...
3
votes
1answer
308 views

Load Testing Crash Course

Can someone point me at a good resource to get a crash course in load testing. I have a sql server machine that I need to load test but I havent been thruogh the process before. Also we do not have ...
3
votes
3answers
178 views

What is a good guideline for sampling for statistics updates

Scope: A billion record table that is indexed in 10 ways. Rate of change per day is 1/2 a percent. Some of the indexes are monotonously increasing (datetime/timestamp), yet the common queries most ...
3
votes
2answers
2k views

Why can the SA account no longer access the master database?

I'm somewhat stuck. We have a database server which was set up and configured by a third party. It's for a third party product so unfortunately we're stuck with the way they've configured it. Their ...
3
votes
1answer
2k views

Does `Seconds_Behind_Master` show exact Slave Lag from Master?

Does Seconds_Behind_Master always show the correct number of seconds the slave is behind the master? I have also Implemented the mk-heartbeat replication monitoring. It was showing the other result ...
3
votes
2answers
86 views

Designating databases to certain CPUs

SQL Server 2012. AlwaysOn Cluster with two nodes, each has 4 cores We are consolidating SQL server instances and moving bunch of databases from various locations to a single cluster which has two ...
3
votes
2answers
833 views

What's the point in SQL Server Central Management Server?

Online MSDN article "Execute Statements Against Multiple Servers Simultaneously (SQL Server Management Studio)" (SQL Server 2012) states: "Note Before you execute the following procedures, ...
3
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2answers
8k views

db2 database alias not listed via list database directory but still unable to create that database

I am trying to create a database by logging on to the linux server on which the db2 server is installed, as the instance owner db2 => list database directory System Database Directory Number ...
3
votes
4answers
1k views

What is the best permissions to set for only creating and managing own databases?

I want to create a login for a new user who could only create and manage their own databases. Other databases on the server should be read-only to that user. What would be a good set of ...
3
votes
1answer
18k views

What queries is Oracle executing, how frequently, and time-taken?

I have a (Java) web-application, that of course executes many queries (selects, inserts, updates, deletes) to the Oracle Database. I want to find out the following for last 7 days: SQLQuery ...
3
votes
1answer
72 views

Administration of MySQL Users

What is the best practice for keeping and maintaining MySQL users? Say for example I have 5 programmers and a PHP application connecting to a database. Should I create 6 different users 1 for each ...
3
votes
1answer
1k views

Master and Slave having same id's

I am working as a remote DBA for some of the production servers. There was replication from Master to Slave. There is something changed in the scenario they have made one of the Slaves as master ...
3
votes
1answer
121 views

Trace Flag 3688 not working on SQL Server 2014

We are using some third party tools that fill up the SQL Server logs with entries like: SQL Trace ID 1 was started by login "sa". SQL Trace ID 2 was started by login "XX\xxxxx". SQL Trace stopped. ...
3
votes
1answer
240 views

How to upgrade MySQL (5.5) production DB to 5.6 with minimal downtime

Our existing Database size around 200GB. We want to use consistent, parallel backups methods. For testing, I migrated my Development DB from 5.5 to 5.6 by running mysqldump with option ...
3
votes
1answer
699 views

Why is the “The package can not be saved to the file system since its protection level is server storage” error?

When I execute dtutil /sourceserver localhost /SQL "\Maintenance Plans\MaintenancePlan_daily" /copy file;.\MaintenancePlan_daily.dtsx from the answer to my question "Any way to ...
3
votes
1answer
542 views

How to drop all scheduler events in MySQL 5.6?

In MySQL 5.6 is there a way to drop all scheduler events with an administrative command or do I have to go through them one by one with DROP EVENT [IF EXISTS] event_name?
3
votes
1answer
119 views

SQL Server database schema (and likely, some data changes) - how to auto-distribute over many database instances

Our development involves a SQL Server database (also might be Oracle or Postgres later) and we would sometimes make database schema changes or some other interventions in database. What solutions ...
3
votes
1answer
75 views

Does avg_query for PgBouncer include update and inserts?

Trying to tune our application and would like to know if the stats data that pgBouncer shows as avg_query, according to the PgBouncer docs on usage: avg_query Average query duration in ...
3
votes
1answer
6k views

Is it possible to do a datapump import with a different user than did the export?

I have one db dump below is the log file for that dump Connected to: Oracle Database 10g Express Edition Release 10.2.0.1.0 - Production Starting "SYSTEM"."SYS_EXPORT_SCHEMA_01": system/******** ...
3
votes
0answers
37 views

How to track DML events ocurred in the current day

I have the following query to track what tables are modified in the current date: SELECT TABLE_OWNER, TABLE_NAME, INSERTS, UPDATES, DELETES, TIMESTAMP AS ...