Comments for Usn's IT Blog

Comment on Creating Oracle AWR reports quicksheet by chandu

chandu — Thu, 02 Feb 2012 21:53:45 +0000

Comment on Oracle 11g JDBC driver hangs blocked by /dev/random – entropy pool empty by usn

usn — Tue, 08 Nov 2011 10:50:20 +0000

Hi, I think the only difference is the wrong syntax. :)
file:///dev/urandom is just the way how to specify a file here.

Comment on Oracle 11g JDBC driver hangs blocked by /dev/random – entropy pool empty by Mahesh

Mahesh — Thu, 03 Nov 2011 11:56:08 +0000

What is difference between file:/dev/urandom and file:///dev/urandom.
I was using file:/dev/urandom but was still facing problem. The later looks like solving my problem till now, but not sure yet. Have to test more.

Thanks.

Comment on Oracle 11g JDBC driver hangs blocked by /dev/random – entropy pool empty by Viktor

Viktor — Wed, 26 Oct 2011 09:39:16 +0000

Great post! Had the same problem when starting more Instances paralled on a WebObjects Monitor /dev/urandom solved my problem!

Thank you!!!

Comment on Oracle Grid Infrastructure 11gR2: How to clean up to repeat root.sh by Lodewicus

Lodewicus — Tue, 11 Oct 2011 08:58:17 +0000

Thanx – this saved me a lot of trouble

Comment on Oracle 11.2: Cursor Mutex S wait event and too many (2^30) child cursors by Craig

Craig — Mon, 03 Oct 2011 22:47:07 +0000

A workaround is to create a stored outline for the affected cursor using dbms_outln.create_outline(a,b) where a=sql_hash_value and b=child_number of the one of the child cursors associated with the one plan you wish to enforce.

Comment on Oracle 11g JDBC driver hangs blocked by /dev/random – entropy pool empty by gdq

gdq — Fri, 23 Sep 2011 13:20:02 +0000

Had a similar poblem when moving a tomcat from one server to an other; when tomcat started deploying the apps on the new server it hanged with a last log line:

FINE: Force random number initialization starting

First solved it by specifying a session handler and random class in context.xml (used default values), but with the option mentioned above, could leave out the context.xml

Thanks for the info!

Comment on Oracle 11g JDBC driver hangs blocked by /dev/random – entropy pool empty by Rick-Rainer Ludwig

Rick-Rainer Ludwig — Fri, 16 Sep 2011 22:07:48 +0000

Thank you very much for your blog entry! I was puzzling around for the last week to find out why unit tests broke by time out. An excessive logging and log file reading brought me to network connection and later to the database connection and JDBC aka. ojdbc5. With that information at hand I came to your blog and I got the solution. Thanks, again! Awesome information! It worked for me, too.

Comment on Oracle 11g JDBC driver hangs blocked by /dev/random – entropy pool empty by Keeping your Maven build fast – BEKK Open

Keeping your Maven build fast – BEKK Open — Sun, 11 Sep 2011 12:09:27 +0000

[...] makes database connection pooling faster for Oracle databases on Linux/Unix systems (see here for [...]

Comment on Oracle 11g JDBC driver hangs blocked by /dev/random – entropy pool empty by Philipp

Philipp — Fri, 09 Sep 2011 09:46:04 +0000

Agree with Andrew! Strange Problem, nice Blog Post! Thanks a lot!