Tagged Questions
-1
votes
1answer
25 views
checking a folder whether required file is present at a regular interval [closed]
i have 4 folder hierarchy in a following format :
Hourly Daily Weekly Monthly.
In every folder i have files which is coming in a frequency based on their folder's name.
Now , i have ...
0
votes
2answers
72 views
Exploring and optimizing SQL performance of your system (PostgreSQL and Hibernate)?
Imagine you have inherited some project with extensive usage of SQL queries.
Let us assume that Hibernate is used as ORM and PostgreSQL as database, but thats not the point.
A question is: could ...
6
votes
2answers
320 views
Oracle 11g: performance improvements of inserts
I have a table of 500 millions of rows (and growing)
I did the following to improve performance of inserts:
On database side:
dropped all indexes and constraints
disabled logging
On application ...
1
vote
2answers
138 views
Derby/SQL - How to increase performance when left joining and retrieving varchar columns
Through trial and error I found that if I do a left join such as:
SELECT
firsttable.id,
secondtable.id,
secondtable.varcharColumn
FROM
firsttable
LEFT JOIN
secondtable
ON
...
3
votes
2answers
213 views
Query for fetching records from SQLite database on Blackberry
I want to fetch data from SQLite database for Blackberry.
There is one table with four columns: ID, FROM, TO, TIME
I want to fetch record on the basis of FROM, and TO values.
Where condition 1:
...
0
votes
1answer
98 views
Simple Search on 13 Terabyte Oracle Database to return relevant rows (.net app? Java?)
I am sure there are some easy ways to do this... I have a simple flat Oracle table which is 13 terabytes or so in size due to a large number of rows accumulating over the years. I need to do a search ...
2
votes
1answer
85 views
Can I use a Clob as a table key (from Java)?
Following a suggestion made to another question to store large amounts of text: can one use a CLOB as primary key field (i.e., from Java's DataNucleus implementation of JDO)?
I know it is probably a ...
1
vote
1answer
259 views
Unable to connect to MySQL cluster database
I am unable to connect to mysql cluster database after starting my management node, data node, mysql node. I made the necessary changes by adding the loadbalance in the dbURL. But I am not able to ...
