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psql: FATAL: Ident authentication failed for user “postgres”
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Edit the file /etc/postgresql/8.4/main/pg_hba.conf and replace ident or peer by either md5 or trust, depending on whether you want it to ask for a password on your own computer or not.
Then reload the configuration file with:
/etc/init.d/p...
Which is faster/best? SELECT * or SELECT column1, colum2, column3, etc
...re looking for is part of the index used to find the data the server will fetch the data right there, if you do a select * it will most likely have to do what is called a bookmark lookup, which requires an extra scan to find the rest of the underlying data, which you may not even need.
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Design Patterns web based applications [closed]
...bility should be distributed among Servlets, criteria to make new Servlet, etc.
5 Answers
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What is the difference between Google App Engine and Google Compute Engine?
...fferent events, which may include HTTP requests, changes in Cloud Storage, etc.
The biggest difference with App Engine is that functions are priced per 100 milliseconds, while App Engine's instances shut down only after 15 minutes of inactivity. Another advantage is that Cloud Functions execute imm...
How to install Java SDK on CentOS?
... After Installation: configuring iptables on centos 6.5 -> /etc/sysconfig/iptables -> -A INPUT -i eth0 -p tcp -m tcp --dport 8080 -m state --state NEW,ESTABLISHED -j ACCEPT
– hpaknia
Jan 18 '15 at 11:17
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What are the differences between django-tastypie and djangorestframework? [closed]
... to Django idioms throughout - built on top of Django's class based views, etc... (Whereas TastyPie came along before Django's CBVs existed, so uses it's own class-based views implementation)
I'd like to think that the underlying architecture is pretty nicely built, decoupled etc...
In any case, ...
How to specify in crontab by what user to run script? [closed]
...e that this method won't work with crontab -e, but only works if you edit /etc/crontab directly. Otherwise, you may get an error like /bin/sh: www-data: command not found
Just before the program name:
*/1 * * * * www-data php5 /var/www/web/includes/crontab/queue_process.php >> /var/www/web/i...
How to convert an NSString into an NSNumber
...r of any primitive data type (e.g. int , float , char , unsigned int , etc.)? The problem is, I don't know which number type the string will contain at runtime.
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R data formats: RData, Rda, Rds etc
...Rda is just a short name for RData. You can just save(), load(), attach(), etc. just like you do with RData.
Rds stores a single R object. Yet, beyond that simple explanation, there are several differences from a "standard" storage. Probably this R-manual Link to readRDS() function clarifies such d...
Should each and every table have a primary key?
...se accessing data would be horrendously slow for queries doing table joins etc. Normal forms is an "idealization" and practically possible only when data is not expected to grow huge.
– Pacerier
Jun 13 '12 at 1:39
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