Hi,
Thanks for all your help. because of it I have successfully retrieved some
records form db using OJB.
However I found out another issue: performance-wise ojb is rather slow.
When I time the whole operation (retrival of 20 records and print some
trivial message), it gives the following result:
real 3m12.765s
user 0m2.530s
sys 0m0.020s
My observation is that it takes quite a long while to initialise. I reached
this conclusion because:
First I see the following message in stdout
...
pool configuration was: {whenExhaustedAction=0, maxIdle=-1, maxActive=21,
maxWait=5000, numTestsPerEvictionRun=10, testWhileIdle=false,
testOnReturn=false, timeBetweenEvictionRunsMillis=-1,
minEvictableIdleIimeMillis=600000, testOnBorrow=true}
...
and then after quite a while i see a sql statement is sent to the db
After that the result is displayed rather quickly.
So, Questions:
1) what is going on during initialiation? Is it expected?
2) Is there anything I can do to speed this up?
3) Some other jdo packages actually created some auxillary tables in the
target db but I did not find similar thing in OJB. Does this mean i have
missed something when i setup OJB?
Regards,
Anthony
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