Unable to allocate memory for mutex; resize mutex region

Question

I have BDB on linux. I am trying to run my app, but I am getting this when it tries to set up the environment. Do I need to set any environment variable or something?
Here is my setting.
<property name="allowCreate" value="true"/>
<property name="cacheSize" value="65535000"/>
<property name="cacheCount" value="30"/>
<property name="initializeCache" value="true"/>
<property name="initializeLocking" value="true"/>
<property name="transactional" value="true"/>
Thanks.
------------- Standard Error -----------------
unable to allocate memory for mutex; resize mutex region
Testcase: testRunService took 1.842 sec
Caused an ERROR
Cannot allocate memory
java.lang.OutOfMemoryError: Cannot allocate memory
at com.sleepycat.db.internal.db_javaJNI.DbEnv_open(Native Method)
at com.sleepycat.db.internal.DbEnv.open(DbEnv.java:262)
at com.sleepycat.db.EnvironmentConfig.openEnvironment(EnvironmentConfig.java:908)
at com.sleepycat.db.Environment.<init>(Environment.java:30)
Edited by: user635741 on Oct 23, 2008 9:19 AM

Answer 1

Hello,
Based on the error, unable to allocate memory for mutex; resize mutex region,
have you tried increasing the mutex region?
The documentation on the setMaxMutexes method is at:
http://www.oracle.com/technology/documentation/berkeley-db/db/java/com/sleepycat/db/EnvironmentConfig.html#setMaxMutexes(int)
You can run db_stat -x
to display the mutex subsystem statistics.
You'll see the information for statistics like:
Mutex region size
The number of region locks that required waiting (0%)
Mutex alignment
Mutex test-and-set spins
If that does not look to be the problem, just let me know.
Thanks,
Sandra