# All Questions

6k views

### MS SQL Server - Checkpoint process stuck in SLEEP_BPOOL_FLUSH

We seem to have a problem that came out of nowhere. The checkpoint process is stuck in SLEEP_BPOOL_FLUSH state, and not actually reducing the usage in the log file. This never seemed to happen ...
64 views

### Does my associated ASM Instance have any play in Re-naming my SID?

Greetings DBA Experts, I have changed my Oracle SID in the past by updating the init.ora file, and updating my environment (vars, tns, lintener, etc..), yet not since we moved to 11g with ASM. I ...
3k views

### How can I set up a read only odbc connection?

I have a user that needs to do queries on an SQL Server 2008 database that I administrate. They have rights to edit the data, but I'd rather they weren't able to do it directly against the table ...
1k views

### Select TOP @N where @N is a variable from another Query

I am building a report on server hardware projections, and I'm getting stuck here. I have a query that correctly returns the number of HDD's installed on the server, and am storing that number into ...
1k views

### Create SSIS package to copy data between SQL Server 2008 installs on different machines?

I'm new to the whole SSIS world. I'm trying to create a process to copy data between SQL Server 2008 environments. I want to be able to run a job to export data from my prod database and then use that ...
6k views

I am trying to set MySQL server on my Windows 7 64 bit machine. I have downloaded MySQL server and MySQLWorkbench. I have started mysql service by command C:\> net start mysql as suggested ...
403 views

### SQL Server 2012 Performance Test

I've been given a task to test where an SQL Server 2012 can achieve better performances - we have two options: Use the SQL Server as an On-Premise machine (Standalone server that we have) Use the ...
3k views

### SQL Server 2008 R2 Transactional Replication “Cannot insert explicit value for identity column…”

Right now I'm having an "identity crisis" with transactional replication in SQL Server 2008 R2. The database is running in compatibility 90. There's a table that has an identity column and won't ...
2k views

### Set-up MySQL Server on Windows 7 64-bit

I am trying to install MySQL Server on my Windows-7 64-bit machine. I have downloaded MySQL Server Community Edition and MySQL Workbench. I am trying to start a new Server Instance from Workbench. I ...
469 views

### Identifying XML Node Position in SQL Server 2008

I am having a problem identifying the node position that contains a particular element in a piece of XML. In the example below I would like to extract the position for each node within the statements ...
86 views

### Decorating an existing database table with information that no one else cares about

We have a table that many processes read from. Some of them want to keep track of the fact they have processed this data, whereas others simply rely on fetching the data from the table based on user ...
3k views

### Are there disadvantages to contained databases?

SQL Server 2012 introduced the concept of "contained" databases, where everything (well, mostly everything) the database needs is contained within the database itself. This offers big advantages when ...
563 views

### SQL Server 2008: NULL SID for WINDOWS_USER in sys.database_principals

Has anyone ever seen anything like this before? I have a WINDOWS_LOGIN AD user that has a record in sys.server_principals with a SID and can login fine. But in a few databases, they have a record in ...
17k views

### SQL Server 2008: The database [dbName] is not accessible

I got this error from another person and I've run out of ideas. I can access this database without any problems, the database is in MULTI_USER mode, the person receiving the error is a user, etc. The ...
68 views

### What does this code do?

I found one of my queries was over written with following code: SELECT cp.objtype AS ObjectType, OBJECT_NAME(st.objectid,st.dbid) AS ObjectName, cp.usecounts AS ExecutionCount, ...
627 views

### Can I reorganise index on a sql server 2005 database without performance hit on production server

I would have preferred to run online index rebuild instead but our production sql server (2005) is standard edition. Hence I think I am left with reorganising index and update statistics after that. ...
61 views

### Should I put followers_no & following_no & product_no & last_login and etc in the user table? Won't updates cause fragmentation on the table?

I have a table for users in a social networking site. I want it to be efficient from ground up. If I put mentioned fields on the table then I have to update user's table on each changes. Should I have ...
11k views

### How do I find out the “redo log file max size” in Oracle 11R2

I'm working with Oracle 11R2 and I want to see the max size of my redo log files (I didn't install Oracle so I'm not aware of the configuration). I have searched the Internet but all I have found ...
386 views

### How do I allow remote connection in SQL Server 2008 Express

I've just installed SQL Server 2008 Express. But when I try to connect to database engine via SQL Server Management Studio I get "A network-related or instance-specific error occurred while ...
105 views

### Log Shipping Monitor Stored Procedure returning Null

I have log shipping setup. When I EXEC sp_log_shipping _monitor it returns all null values even though log shipping appears to be working fine. last_restored_file NULL last_copied_file NULL
840 views

### SQL Server 2008 DB size grown huge

I am a .net developer and not a expert in database. I have a application running with SQL server 2008. Yesterday there was issue with a certain query getting executed in infinite loop and which caused ...
259 views

### SQL Server 2008 Database growth issue.

I am a .net developer and not an expert database administrator. I have an application running on SQL server 2008. Yesterday there was an issue with a certain query getting executed in an infinite ...
3k views

### PostgreSQL 9.1 vs MySQL 5.6 with InnoDB ? Which is better for scaling?

PostgreSQL 9.1 vs MySQL 5.6 with InnoDB. I do know that PostgreSQL offers better SQL features. I am currently using MySQL 5.6 lab release (the one with InnoDb full text search feature)(not in ...
703 views

### How to break out of error loop in transactional replication?

I was running some simple tests on a publisher and subscriber on the same instance: I inserted 50,000 rows into a published article and the data was correctly pushed to the subscriber. I ...
924 views

### Are these MySQL queries efficient?

It took me quite a while to learn how to deal with timestamps in MySQL and I think I accomplished my goals, but I want to double-check two things: 1) Are these doing what I expect 2) Are there ...
519 views

### Oracle hint failure

When I run the PL/SQL block after the CREATE statement, I receive the duplicate key error I would expect if I did not add the hint. Any ideas to why the hint does not work? CREATE TABLE Sandbox.Clue ...
14k views

### Questions about handling NULLs and empty strings in nvarchar and numeric fields

I understand that questions similar to these pop up often around here. I have searched before posting these but I didn't find any QA threads that completely answer my questions. In a table, I ...
836 views

### Copy database fails while trying to copy login

I'm trying to copy a database from a server that lives in a unique domain, call it AMCO. The destination server, which is on domain BCO, is running sql server agent, and as far as I can tell ...
4k views

### SQL Server 2012 is putting [brackets] around Table and Column Names

Is there anyway to turn that off? I'm unable to find anything in options, and they're really a distraction.
3k views

### How to detect compatibility errors - SQL Server 2012

I am changing a database's compatibility mode from 90 (SQL Server 2005) to 110 (SQL 2012) and I am wondering at what point would I see errors from breaking changes if there are any. I ran Upgrade ...
3k views

### Atypical problem with ORA-01445

I have problem with following query Q1: SELECT ADDRESS.STREET FROM MYSALES.MYADDRESS ADDRESS INNER JOIN MYSALES.MYCOUNTRY MCOUNTRY ON MCOUNTRY.MYCOUNTRY_ID = ADDRESS.MYCOUNTRY_ID INNER JOIN ...
889 views

### Partition Key questions in SQL Server 2008

We are planning to use table partitioning for our database based on an integer column. I have read about it on MSDN at http://msdn.microsoft.com/en-us/library/ms190787.aspx and have few queries. a) ...
620 views

### compare/sync databases from different computers

I have a server online and I have installed MySQL and database A server on it. I also have mysql installed on my local computer and have a copy of database A on it. I want to compare the contents ...
1k views

### Why are there Victimless Entries on the Deadlock Graph?

I am trying to learn how to analyze SQL Server 2008's deadlock graph, and I'm finding alot of entries with an empty <victim-list> node. I don't understand what these entries represent: if there ...
1k views

### SQL Server 'Create Database' statement. How to inherit autogrowth settings?

I am using SQL Server 2008 R2 and creating databases through continuous deployment. In our system, the default 1Mb/10% autogrowth settings in SQL Server work badly with our data. Particularly as we ...
2k views

### Why I cannot let EXPLAIN update statements?

I can imagine that it's actually more important to explain SELECT statements, but I wonder why there's no possibility to use EXPLAIN on UPDATEs/INSERTs. I may use a WHERE-statement in an UPDATE where ...
73 views

### Should Crystal Report be allowed for certain employees for production database?

I am talking about production database. There are couple of people who use crystal on daily basis for various types of reports. Some use it to just peak at the data, other generate reports of it. ...
310 views

### PostgreSQL : Is this because of locks(row level)?

I have a table with approximately 2.1 million tuples. Which has latitude and longitude columns. I am trying to convert this into a geographic type (point with SRID). The function(procedure) I have ...
169 views

### CREATE ASSEMBLY - EXCEPTION_ACCESS_VIOLATION

I am trying to create an assembly on my SQL Server 2005 server. Here is what I am using: CREATE ASSEMBLY [SQLCLRTest] AUTHORIZATION [dbo] FROM 'path\to\my\file.dll' WITH PERMISSION_SET = ...
4k views

### sp_execute expects parameter '@handle' of type 'int'

I'm trying to check in a stored procedure if a table exists in my destination database. If it does not then I will create the table useing the information_schema tables from the source database. ...
1k views

### COUNT with set DIFFERENCE and UNION

Fairly simple question that I can't seem to find an answer to - I'm working with unions and differences, and I would like to perform a COUNT on the results. Currently I'm having to pipe out to a file ...
755 views

### Merge replication - can't create snapshot – timeout

I have a SQL Server 2008 database, and I need a merge replication because I want to sync with mobile devices afterwards. So I created a replication but when it comes to start the snapshot agent, the ...
90 views

### Verify if I can use a given directory

Admin creates an Oracle directory: CREATE OR REPLACE DIRECTORY EXAMPLE AS '\\server\share\test'; GRANT READ, WRITE ON DIRECTORY EXAMPLE TO JOHN; Admin can test whether the directory exists: SELECT ...
3k views

### DB2 LOAD data into table - Interpreting the error messages

I encountered some constraint issues when loading data from file into table ** SQL3109N The utility is beginning to load data from file "xag". SQL3500W The utility is beginning the "LOAD" phase at ...
549 views

### single select vs multiple selects using limit and offset

Working on a fairly high volume site. There are some tables example - the customers table which gets hit a lot. The problem We are writing a piece of code that selects a bunch of customers and ...
11k views

### How to manage millions of users?

I am about to launch something really big. I need to prepare my server and database. I would like to group each set of 100,000 users in separate user tables but I do not know how to associate one ...
11k views

### SQL Server 2012 installation failure An error occurred for a dependency of the feature causing the setup process for the feature to fail

I am installing SQL Server 2012 Developer (from ISO image written on DVD), my machine has Windows 7 (Edit: Windows 7 with service pack 1) and it already has SQL Express and SQL 2008 R2 Express ...
615 views

### How can we uninstall multiple instances of SQL Server 2008 without restarting the O/S?

How can we uninstall multiple instances of SQL Server 2008 without restarting the O/S? SQL Server installer is failing with error: Server needs to restart after one instance uninstalled. It is ...