4
votes
2answers
306 views

mysql multi threading for a single query

I have big db of size 8GB and having 9 million contacts in this db. When we try to retrieve all contacts, it takes nearly 1 or 2 hour (in some cases result in timeout) to retreive all contacts for the ...
1
vote
3answers
100 views

Best practice to query administrative views for instance level elements

I want to query a monitor element at instance level (for example the memory used for the instance) via a query like this: SELECT MEMBER, MAX_MEMBER_MEM, CURRENT_MEMBER_MEM, PEAK_MEMBER_MEM FROM ...
3
votes
2answers
2k 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 ...
1
vote
1answer
235 views

db2 LUW help for an oracle user : create database hangs without any output, but database got created

I am new to db2 but have worked on oracle before. Trying to create a database and it succeeds, but the session where I issued a database creation command hangs. I have installed db2 10.5 on a 64 bit ...
0
votes
0answers
168 views

Table is marked as crashed and should be repaired

I have MySQL and Nagios installed Linux PC (Centos5.5) I have wrote some script to fetch the data from Nagios to Mysql DB (Exactly fetch data in Table) The data fetching working properly (confirmed ...
0
votes
0answers
253 views

How much RAM for a large database on a dedicated MySQL InnoDB server?

Hereunder my hardware config: CPU: 1x Intel Xeon X3470 Quad core @ 2.93GHz RAM: 4x 8GB DDR3 Disks: 2 x SATA 320GB for the system & 4 x SAS 300GB for the DB I've upgraded from 12Gb to 32Gb and ...
1
vote
1answer
522 views

MySQL Tables crashing randomly

This is one of the many random Tables that get corrupted. Any ideas why and what would be causing this? How do I keep MySQL tables from crashing and MySQL from crashing? Repairing USR_wp537 ...
7
votes
4answers
7k views

Why using innodb_file_per_table?

There are many articles exaggerating (IMHO of course) the need for innodb_file_per_table. I understand that with innodb_file_per_table, there should be a better control over the individual tables; ...