0
votes
0answers
12 views

Help no longer required

Fixed my issues, sorry for bother.
0
votes
0answers
10 views

Will redirecting queries to dev/null warm up indexes?

I'm trying to warm up the buffer pool. Will running a query and re-directing the output to /dev/null suffice? e.g. mysql -u username -p -e "select id from tbl where 1=1" > /tmp/results.txt Thanks
0
votes
1answer
6 views

Installing scott schema for oracle 11g express

I want to install scott schema, a sample database in oracle. But in express edition, I can't find out it. Please help me install it on Oracle 11g express. I'm a newbie, pls help me
1
vote
0answers
7 views

Looking for ideas on maintaining data warehouse in close to real-time - ETL tools, etc

I have done a fair number of traditional data warehouse implementations where the loads were done in a batch-oriented manner, i.e. the data is refreshed nightly or, at most, every few hours. I now ...
0
votes
0answers
7 views

Is there a psql equivalent of bash's reverse-search-history?

I am very fond of bash's reverse-search-history (C-r) (command-line feature): Search backward starting at the current line and moving ‘up’ through the history as necessary. This is an incremental ...
0
votes
1answer
20 views

What data will be lost with DBCC CHECKDB (REPAIR_ALLOW_DATA_LOSS)?

I have a corrupt database. The last known good backup was over 2 weeks ago. I've run a CHECKDB and have the page numbers where SQL Server located the corruption. I've looked at the data on the ...
2
votes
2answers
47 views

DISTINCT not using an index

I have table (2139868 rows): COLUMN1 NUMBER(20,0) COLUMN2 XMLTYPE COLUMN3 XMLTYPE COLUMN4 VARCHAR2(50 BYTE) COLUMN5 VARCHAR2(50 BYTE) COLUMN6 VARCHAR2(50 BYTE) COLUMN7 VARCHAR2(50 BYTE) COLUMN8 ...
0
votes
0answers
4 views

Upgrade MongoDB meta-data after binary upgrade

I upgraded our MongoDB binaries from 2.2.5 to 2.4.9. I did not follow one of the considerations prior to upgrading: To upgrade to 2.4, sharded clusters must upgrade following the meta-data upgrade ...
0
votes
0answers
10 views

Issues with Inserting due to FK constraints

I have two tables: Employee, and Department. They are setup like so, : CREATE TABLE IF NOT EXISTS `mydb`.`Department` ( `Dname` VARCHAR(25) NULL, `Dno` INT NULL, `Total_sal` INT NULL, ...
0
votes
1answer
20 views

What is the best way to get all data for a date range, plus the last event just before the range?

For this question assume the following: There is a table of events [Event] There is a table of employees [Employee] There is a table that relates the two [EventEmployee] (EventID + EmployeeID) Each ...
1
vote
1answer
21 views

Avoiding entitized characters when using FOR XML PATH for string concatenation

I have this query: SELECT DISTINCT f1.CourseEventKey, STUFF ( ( SELECT '; ' + Title FROM ( SELECT DISTINCT ...
0
votes
1answer
10 views

Failover Mirror

My name is Jackson and I'm from Brazil, sorry about my English. My question is about the failover process in SQL Server Mirror. Question: If just the database, not a instance or a server, goes ...
0
votes
1answer
19 views

SQl comand works in Workbench but not from Java Program

I am working on a program that manages a database of client information. I am currently stuck on a problem where the SQL statement created by my java program but get the error SQLException: You ...
0
votes
0answers
8 views

“Display width out of range for column” error when importing mysql 5.1 dump into 5.5

I am migrating to a new server, and trying to move my database from a 5.1 to 5.5 server. I created a dump with mysqldump -u root -p --add-drop-database --triggers dbname > dbname.sql When I ...
1
vote
1answer
37 views

Error checking with sp_send_dbmail

This question is kind of multifaceted. First, what I'm trying to actually accomplish: I am in an environment where there is not really heavy data validation on inputs. So there is lots of opportunity ...
0
votes
0answers
15 views

DB2 removing white spaces in field values

In a table I have a column called column_xml defined as CLOB(1000000). The fields in the column contain XML formatted information. My problem is that there are lots of white spaces in these fields ...
1
vote
0answers
25 views

Profiling parameters

I was trying to fine the parameters of a query I suspect to be causing unnecessary logical read and eventually captured it in profiler, however parameters @p3 and @p4 are not listed. Is anyone able ...
0
votes
0answers
11 views

Many temporary tables created on disk since mysql 5.6 upgrade

I recently upgraded MySql (from 5.5 to 5.6) on a Debian Wheezy server. Drupal 7 and a PunBB board are installed on this server (Drupal 7 database size: 54 M / board database size < 800 M). These ...
0
votes
0answers
41 views

Avoid transaction rollback when Deadlock is encountered (mysql)

I'm currently trying to handle concurrent inserts correctly using MySQL, I'm basically doing the following: CREATE TABLE foo (id INT NOT NULL PRIMARY KEY) ENGINE=INNODB; CREATE TABLE bar (id INT NOT ...
0
votes
1answer
24 views

How to decide whether to enable MySQL query cache using InnoDB

How should the decision to enable / disable the MySQL query cache be made, on a server that uses just InnoDB tables. Say for example, if the cache is enabled, then how should the output of: SHOW ...
0
votes
0answers
15 views

MySQL CPU high usage

My MySQL service started to using a lot of CPU recently. Few second after restart it takes 100% CPU's. I tried already changing my.cnf file to optimize cache/buffers. I have no idea what causing that ...
3
votes
1answer
36 views

sql indexing and performance

I am using mysql5.1, i have table which has about 15 lakh (1.5 million) records.This table has records for different entities i.e child records for all master entities. There are 8 columns in this ...
-3
votes
0answers
31 views

Is it possible to get the queries executed in the past? [on hold]

Is it possible to get the queries executed in the past? the server is restarted.
0
votes
2answers
25 views

MYSQL: Join with many to many

I'm trying to create a view and trying to see what can be done, I have a main table a table I wanna join to and also a junction table. Event table (it's very big so it's just dummy data): ...
2
votes
4answers
54 views

Advanced design question related to compound primary keys

As a database design expert, I had a discussion with an academic person about database design and I need some arguments on why some design is bad or not normalized or bad practice. As we cannot ...
0
votes
0answers
11 views

Are mongodb bulk inserts really increase server perfomance (and faster)?

Bulk inserts always are faster in client side because of saving round-trips, but at the server-side is there any sensible performance improve? It seems the code for bulk inserts, just loops over ...
0
votes
1answer
16 views

How to grant super privilege to the user?

I have created a user and given privileges to the user1. `grant all privileges on db1.* to user1@'%' with grant option; Am using mysql workbench to import dumps to my database. While importing ...
0
votes
0answers
5 views

Best design of mongo replica set for DB read/write speed

I'm building a Node app that uses MongoDB. Whilst it would probably be fine to have node and mongo sitting on the same VPS, I want to ensure that the MongoDB is backed up and maintain high ...
0
votes
0answers
46 views

A rollback on a production server that's been running too long

I have a problem with a production server that is causing considerable locking and performance degradation. It all started the night of Tuesday into Wednesday with a procedure that inserts data into ...
0
votes
0answers
23 views

what values to set for the folowing PostgreSQL Variable [on hold]

I need to optimize my DB, in order to fine tune, what values to provide for the following variables, please advise, thanks. PgSQLIdleQuery PgSQLXclLock PgSQLConnections PgSQLMaxTTime PgSQLMaxQTime ...
-1
votes
1answer
26 views

the environment variables configuration for ORACLE EXPRESS 11g / windows7 32Bit

I can't connect in Oracle Express 11g (windows7 32-bit) and I think the problem comes from the environment variable ORACLE_SID & ORACLE_HOME , how can I get the database instance to do the right ...
1
vote
0answers
23 views

Using #temp to work around Reporting Services blocking issue

Having utterly failed to resolve why a perfectly acceptable but admitidly large stored procedure was suffering the blocking process lck_m_s when called via a report in SQL Reporting Services I have ...
1
vote
0answers
15 views

MySQL database stops working after log enabled

I have this strange issue. I have MySql workbench, which I use to make querries to mysql database (xampp 3.2.1). Everything works fine, but recently I found myself having to profile the querries my ...
1
vote
0answers
27 views

How to design a database structure for different groups of contacts?

I've been looking around for a while how systems manage their contacts. Most I encounter is creating a people or party table including a type to define the type of people/party. These types are either ...
0
votes
0answers
12 views

Amazon rds MySql -> concurrent connections deadlocks

I normally hang around in StackOverflow but I think this issue is better suited here. I've built an application in C#.NET that uses MySql as a database. My application inserts and updates data in the ...
0
votes
1answer
15 views

SqlServer Permission [duplicate]

I installed SQL server, I deleted my windows user account, Now I'm trying to access sql server using administrator account but it could not be connect. It throws error like this(The database TEST is ...
1
vote
0answers
24 views

Database design: Normalizing a “(many-to-many)-to-many” relationship

Short version I have to add a fixed number of additional properties to each pair in an existing many-to-many join. Skipping to the diagrams below, which of Options 1-4 is the best way, in terms of ...
0
votes
1answer
9 views

Why is the OCR&Vote disk group servicing SCAN name

I have installed 11g R2 Grid Infrastructure followed by database software only installation. I have not created any database yet. When I open asmca->diskgroup, I can see the diskgroup which I have ...
0
votes
0answers
12 views

MySQL - How to grant read access to all tables, write access to a few, to one user for multiple databases?

Ubuntu Server 11.04 - a testing server with at least 10 copies of the production code. Each copy has its own database. And there are two sets of database prefixes in operation. There is an add-on ...
1
vote
1answer
21 views

How to make MYSQL smart enough to understand when it should take into account stop word and when it shouldn't?

Ok, here is the problem. I have a table Text text nature .... text2 nature .... a lot of nature ... rows here.. .... go with nature with nature her go it Now, i select: select * From MyFullText ...
1
vote
0answers
28 views

Any idea why this seemingly-simple query is really slow?

Here's the query SELECT count(*) FROM registration r LEFT JOIN registration r2 ON r.baggage_group_id = r2.baggage_group_id AND r2.team_id IS NULL WHERE r.event_id = "102577"; It seems pretty ...
3
votes
2answers
59 views

Intermittent RESOURCE_SEMAPHORE_QUERY_COMPILE Wait Stats

I'm trying to troubleshoot some intermittent CPU spikes that we're witnessing on one of our production SQL Servers. We're running SQL Server 2008 R2 Standard Edition with 28 GB RAM and 4 CPU cores. ...
0
votes
1answer
24 views

Can't force mysql to use index

There are many similar questions about force index but mine is something different because i successfully use index at local dev server but can't on production server. I have a table with more than ...
0
votes
0answers
16 views

How can I find which records of `Data Warehouse` must be updated according to CDC captured changes?

I use SQL Server 2012 for OLTP Database and created a Data Warehouse in SQL Server 2012. I design Facts and Dimensions inside Data Warehouse with several Views. Some of my Fact table are made by ...
0
votes
0answers
6 views

Azure database copy seems stuck in a loop

I am attempting to refresh a database using CREATE DATBASE name AS COPY OF server.name. After executing the copy statements, I run the following to track the progress: DECLARE @yup INTEGER PRINT ...
0
votes
0answers
10 views

Can't Add Databases through PHPMyAdmin

EDIT (should've mentioned this sooner): I'm using a Mac, running OS X 10.9.2 Being fairly new to PHPMyAdmin, I thought I was removing settings/privileges for one single user through PHPMyAdmin, but ...
0
votes
1answer
24 views

How do I use a temporary table to generate a template of results and then fill it?

So let's say I have a table, call it 'orders' that looks like this: fields: customer|order_type|price data: "Bob" |"Delivery"|100 "Nancy" |"Delivery"|200 Where customer can be any name, ...
0
votes
0answers
10 views

Azure Copy Database Failed

We have four different environments: DEVINT, TEST, STAGE, and PROD, each on their own Azure SQL Database server. I can copy a database between any two of these, using the command CREATE DATABASE mine ...
1
vote
2answers
54 views

Latitude and Longtitude Distance Calculation

I'm using MySQL and I am trying to calculate the distance in meters between two different longitude, latitude coordinates. I wrote a stored function in MySQL but it calculates just 1 for each row in ...
2
votes
2answers
44 views

Creating Clustered Index uses all my tempdb space. Why?

Table size = 44GB (no clustered index) Row Count = 122016576 Disk space allocated to tempdb = 200MB I wanted to create a clustered index for the table due to slow query times so I ran the ...

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