1
vote
1answer
529 views

TimeZone parameter in postgresql.conf

postgresql documentation says: All timezone-aware dates and times are stored internally in UTC. They are converted to local time in the zone specified by the timezone configuration parameter ...
6
votes
1answer
887 views

Login to SQL Server 2k8 R2 SP1 via Active Directory Group

I added an Active Directory group as a Windows Authentication Login to our SQL Server 2008 R2 database. When a user who is a member of that group tries to connect to the server he is given a login ...
2
votes
2answers
96 views

Regular Expression Difficulty

I'm trying to extract 456 from the string :123:456: as follows: select regexp_substr(':123:456:', ':(\d+):', 1, 2, 'i', 1) from dual However, this query returns null. What am I doing wrong?
1
vote
1answer
321 views

Database comparison tool for IBM db2 like OPatch? [closed]

I am looking for a database comparison tool for IBM DB2. I was wondering if there is a utility for IBM DB2 similar to OPatch in Oracle's db 11g?
14
votes
3answers
3k views

Is there any benefit to defragmenting SQL indexes in a SAN environment?

Our SQL server lives on a SAN. It contains dozens of OLTP databases, some with several tables containing over 1m records. We have been running Ola Hallengren's index maintenance scripts weekly, and ...
3
votes
3answers
881 views

When are Archived Redo Logs generated?

We have an instance in Oracle 10g. Only one schema is used for a web application (Internet-facing), which is only user for reading information, no adding or modifying data. The rest of schemas are ...
3
votes
2answers
2k views

Restarting One Database Not Entire Server

Is there anyway to restart one database in SQL Server instead of restarting the entire server? I have a task in perpetual rollback on one of my databases. I'd like to restart it without turning off ...
10
votes
2answers
2k views

Does Oracle PL/SQL have a standard ASSERT routine?

I'd like to use an ASSERT routine functionally similar to the one found in other languages, i.e. a construct (be it a procedure, syntax...) ASSERT( <condition>, <msg>) such that when ...
6
votes
2answers
30k views

Easy way to check connectivity to SQL Server from client

For troubleshooting purposes, I would like to be able to check if a client can connect to a SQL Server instance, independent of the application that possibly can't connect to the SQL Server. Is there ...
3
votes
2answers
340 views

Error Occured during the login process

I have Sql server 2005 on my local machine. During the studies of SQL server network configuration, I login my sql instance by my M/C IP (server name) and login 'sa' and run the following script. USE ...
2
votes
4answers
1k views

Identify cause of unusual transaction log growth

I have an application running on SQL Server 2008 (its a cluster but it hasn't failed over.) Previously the transaction log used to grow to 10-20Gb every 2-3 days and we would shrink it back after ...
1
vote
1answer
818 views

how to get last date of today in datetime datatype?

select dateadd(s, -1, dateadd(month, datediff(month, 0, getdate())+1,0)) when i execute this query, it gives '2012-01-30 23:59:59.000'. I donno how to get it as '2012-01-30 23:59:59.997'. If anybody ...
6
votes
2answers
470 views

Is it worth partitioning a Table by single value in Oracle?

Normally, if you have a column you frequently query a table by, you ought to stick an index on it. But is it worth also partitioning a table by this column, if all possible values are known in ...
13
votes
2answers
4k views

Is the overhead of frequent query cache invalidation ever worth it?

I'm currently working on a MySQL database where we are seeing a large number of invalidations from the query cache, primarily because of the high number of INSERT, DELETE and UPDATE statements that ...
1
vote
1answer
1k views

How to change the display of an empty string in mysql command line tool?

I'm maintaining a database with InnoDB tables. These tables have some columns of type (from show create table): `val0` varchar(30) default NULL, `val1` varchar(30) default NULL, etc... From the ...
13
votes
4answers
938 views

The order of columns in a table [duplicate]

From what I've seen so far, when we define a table, normally we put the primary key as the first column. If there are miscellaneous columns that are common in all tables, they come at the bottom of ...
2
votes
1answer
384 views

How do I ensure consistent MySQL backups?

How can we ensure MySQL backups are consistent when they are taken as full backups as well as incremental backups using binlogs? According to me, I record the COUNT(*) from random tables after ...
2
votes
1answer
3k views

What does reslen and other means in mongodb log?

database.tablebusiness query: { LongitudeLatitude: { $nearSphere: [ 106.772835, -6.186753 ], $maxDistance: 0.04498373205078301 }, Prominent: { $gte: 15 }, indexContents: { $all: [ /^aru/, /^op/ ] } } ...
2
votes
2answers
962 views

Does pt-table-checksum point out rows that are different between Master and Slave?

Trying to verify replication integrity of my replica. And I found that pt-table-checksum is one of the best ways of doing it. I have a simple Master->Slave set up. Have created a sample table with 10 ...
2
votes
1answer
1k views

foreign key constraints on same table

I have a table structure like this. tblquestion ( nQuestionId1 INT UNSIGNED PRIMARY KEY AUTO_INCREMENT NOT_NULL, nQuestionId2 INT UNSIGNED ALLOW NULL ); Here..nQuestionId2 has a foreign key ...
0
votes
1answer
104 views

Is Index Used for This Query

If so, which one? How do we know? I have 3 indexes in a query. Actually only the first 2 should be useful { "v": NumberInt(1), "key": { "LongitudeLatitude": "2d", "Prominent"▼: ...
2
votes
3answers
8k views

Date format in SSRS

I'm wondering if there is a setting in SSRS to indicate the date format. We need to show the dates in dd/mm/yyyy format on the reports and from what I can see in database the value has been stored ...
1
vote
1answer
1k views

How to interpret this “db.explain()” for this mongodb query

db.tablebusiness.find({ "LongitudeLatitude" : { "$within" : { "$centerSphere" : [[106.772835, -6.186753], 0.0089967464101566] } }, "indexContents" : { "$all" : ["warung"] }, "Prominent" : { "$gte" : ...
1
vote
1answer
239 views

What happens to existing MySQL databases when I upgrade my Ubuntu distro?

I am in the midst of upgrading my Ubuntu distro from 10.4 to 12.4. Fearfully, it asked me for root password on MySQL when I was upgrading the distro. I used to have databases on that server, would ...
1
vote
4answers
727 views

How do I develop this data model without a circular reference?

I am trying to develop a concept for a new call tracking system for a help desk. The top 3 levels reference each other. I am trying to determine a better way to link these tables, and am drawing a ...
5
votes
3answers
2k views

Total of orders open on a given date for each date in a date range

This question is similar to Running total with count?, but please allow me to explain some further twists on the issue. I'm using SQL Server 2008, so the cursor option described by Aaron Bertrand ...
2
votes
4answers
10k views

What GUI tools can be used for PostgreSQL in Mac OS X? [closed]

I have recently started using PostgreSQL with my rails app. I was looking for a SQL GUI to the PostgreSQL database (for Mac). Anything better than pgadmin3?
9
votes
1answer
4k views

SQL Server TempDB behaviour in large memory environment

Reading over In-memory SQL Server log file reminded me of a question I had a short while ago. We have a SQL Server that has 512GB of RAM, the main database is (only) 450GB. We see quite a lot of ...
3
votes
2answers
7k views

SQL Server : how to drop all constraints on a table in T-SQL

I´d like to drop all constraints on all tables in my database, because I need to change the relationships of many of the tables. Is there any way to do that with T-SQL? I cannot find any solution ...
3
votes
1answer
241 views

In-memory SQL Server log file

I have a SQL Server instance that is used solely for the purpose of reporting and also for preparing data to be loaded into Analysis Services. Its data comes from another SQL Server instance which is ...
1
vote
1answer
109 views

Select ``,* from table?

I'm trying to upgrade our database servers to MySQL 5.5. In doing so, I'd like to convert all of our tables to InnoDB to take advantage of several performance benefits. However, we use VARCHAR(50) ...
1
vote
1answer
5k views

Arabic characters not displaying in oracle database

We have a Oracle database 8.1.7 running for many years on Win-2000. We wanted to move the database on a newer machine running Win 2003. I did the following I made a cold backup of old database. ...
4
votes
1answer
105 views

How do you manage a list for particular object. for eg. user comments on specific object(user post etc.)

I am new to database and web application development. I want to know how to store a list for a particular object in a database. For example, user comments for a particular post(object), or the ...
9
votes
4answers
2k views

How to check if a subquery has exactly one distinct result and a specified value concisely?

I found myself writing the following: select 'yes' where exists(select * from foo where val=1) and not exists(select * from foo where val<>1); and wondering if there is a more concise way ...
6
votes
1answer
612 views

Can I “Execute T-SQL Statement Task” against all user databases?

I'm setting up a maintenance plan on Sql Server. I want to add an Execute T-SQL Statement Task to the plan, however I do not see any way to set this task to run in every [user|system|all] database as ...
4
votes
1answer
2k views

Database Design for Questions and Answers

I'm building a website that will host a variety of questionnaires. Each questionnaire has a different number of questions and each question has a different number of answers. I have attempted to ...
4
votes
3answers
544 views

Creating new TempDB files

I would like advice on what would be the best setup for our SQL Server 2005 TempDB. At the moment our Temp DB consists of a single MDF file of 3 GB and a single log file of 120 MB on the D: drive of ...
2
votes
1answer
654 views

Safely promoting master to slave

Previously I've asked the similar question MySql Switching Masters During Failover with log-slave-updates. Let's say this is our current replication In addition, I have few application servers. ...
3
votes
1answer
3k views

How to remove xmlns from child elements with FOR XML

I have a TSQL query that I use to generate a SOAP document. I am using two namespaces. Namely: - http://schemas.xmlsoap.org/soap/envelope/ for "packaging" the soap document - A custom one that ...
1
vote
2answers
529 views

SHOW SLAVE HOSTS shows incorrect output

I had used --report-host option in one of my slaves, so that I could see that under SHOW SLAVE HOSTS. Now that server is no longer in use. I have uninstalled that server as well. Unfortunately I still ...
0
votes
1answer
1k views

database creation using codeigniter database dbforge class gives “Access denied for user 'username'@'localhost' to database 'database_name' ”

Using codeigniter database dbforge class I have created a database and loaded that database as the current database and created tables in localhost WAMP server. But when I uploaded it to the server I ...
1
vote
1answer
353 views

SQL Server Merge Replication, Agent Batch Size

Is there anyway to increase the merge agent batch size after the publication is created? I know DownloadGenerationsPerBatch flag when creating a new Publication, however what I'm looking for is a way ...
3
votes
1answer
112 views

Using Inteval Datatype to store result of calculation

I want to create a table which has hiredate and Interval of hiredate and sysdate. How to create a column that automaticlaly stores the calculation.
11
votes
1answer
7k views

How to get notices to the output stream?

I have debugging messages in functions. Those message are raised like RAISE NOTICE 'Value of id : %', id; I set my log file with \o messages.txt Then I do what I need to do with \i process.sql And ...
4
votes
1answer
813 views

How are indexes represented in an ERD?

What do indexes look like in an Entity Relationship Diagram? I've googled it and I'm unsure what the standard look of an index is in an ERD. And I'm talking about the crowsfoot diagram that includes ...
2
votes
1answer
373 views

Why my application is blocked infinitely and SQL Server never timeout and kill the deadlock

I have a multi-thread application that can opened more than one database connection to perform database operation. These connections are using the same credential. Here is a problem, the application ...
2
votes
1answer
2k views

How to schedule a weekly backup of a database only if it has been changed since last backup

I´m new to SQL Server administration. I´d like to create automatically backup database every Sunday night, but only if there was any change in previous week (if not, backup is unnecessary). Is there ...
10
votes
3answers
3k views

Database starts always in recovery mode

Everytime I restart my server, the database is always in recovery mode, and it takes about 20 minutes for it to behave as normal. This always and only happens when I restart the server, so I have a ...
8
votes
1answer
8k views

BULK INSERT permission on a single database

I work on a company that has straight IT security manners. I was hired as a Database Analyst in order to optimize some processes in our team. The problem is that I only have read and write permissions ...
5
votes
2answers
3k views

Best value for fill factor in index

I use SQL Server 2008 R2 and want to set value for fill factor property in each index. I look for recipe to calculate best value for this property (have better performance when insert record) . Also ...

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