Read timed out on /batch/project (SonarQube 4.5) - sonarqube

Question

I am struggling with the following problem.
Log of the executed when sonar-runner in Jenkins.
SonarQube Runner 2.4
Java 1.7.0_67 Oracle Corporation (64-bit)
Windows 7 6.1 amd64
SONAR_RUNNER_OPTS=-Xms256m -Xmx512m
INFO: Runner configuration file: D:\CI_BUILD\sonar-runner-2.4\conf\sonar-runner.properties
INFO: Project configuration file: NONE
INFO: Default locale: "ko_KR", source code encoding: "UTF-8"
INFO: Work directory: D:\CI_BUILD\jenkins_home\jobs\CAFE-CLIENT\workspace\.sonar
INFO: SonarQube Server 4.5
05:17:52.119 INFO - Load global referentials...
05:17:53.382 INFO - Load global referentials done: 1263 ms
05:17:53.414 INFO - User cache: C:\Users\pcms_build\.sonar\cache
05:17:53.445 INFO - Install plugins
05:17:54.225 INFO - Install JDBC driver
05:17:54.303 INFO - Create JDBC datasource for jdbc:jtds:sqlserver://10.240.232.145/sonardb;SelectMethod=Cursor
05:17:56.222 INFO - Initializing Hibernate
05:17:59.217 INFO - Load project referentials...
05:18:19.232 INFO - Load project referentials done: 20015 ms
INFO: ------------------------------------------------------------------------
INFO: EXECUTION FAILURE
INFO: ------------------------------------------------------------------------
Total time: 34.757s
Final Memory: 21M/291M
INFO: ------------------------------------------------------------------------
ERROR: Error during Sonar runner execution
ERROR: Unable to execute Sonar
ERROR: Caused by: Unable to request: /batch/project?key=CAFE-CLIENT&preview=false
ERROR: Caused by: Read timed out
ERROR:
ERROR: To see the full stack trace of the errors, re-run SonarQube Runner with the -e switch.
ERROR: Re-run SonarQube Runner using the -X switch to enable full debug logging.
Build step 'Invoke Standalone Sonar Analysis' marked build as failure
05:18:19.232 INFO - Load project referentials done: 20015 ms
When "Load project referentials done" value is larger than 20,000 ms,
Always "Read timed out" occurs.

Answer 1

Loading of project referentials is not expected to take more than a few seconds. It is very likely you have a performance issue on your SQ server (or with your DB). Here are some criteria that may increase duration of this web service:
you have installed a lot of language plugins or you have enabled a lot of rules in quality profiles
your project is a multi-module project with a lot of modules
Compare for example with:
http://nemo.sonarqube.org/batch/project?key=org.codehaus.sonar%3Asonar&preview=true
that returns more than 1000 rules and 33 modules. It takes less than 2 seconds to return data.
EDIT: it seems there was some SQL issues depending on your DB vendor. See http://jira.codehaus.org/browse/SONAR-5849 and http://jira.codehaus.org/browse/SONAR-6063. Should be fixed in upcoming 4.5.3