Hi Chalitha, I have got the same exception when two G-Reg nodes are pointed into a fresh oracle instance and after increasing sessions and process values, issue got resolved. I have used below SQL commands to increase sessions and process values.
alter system set processes=300 scope=spfile; alter system set sessions=300 scope=spfile; Regards, Chandana On Thu, Aug 20, 2015 at 5:26 PM, Chalitha Waldeniyage <chali...@wso2.com> wrote: > Hi Shazni / Isuruwan, > > We tried to increase the session and process values through sql query but > it was not successful. If you know any specific configuration to be done to > eliminate this issue please do let us know. Also we haven't came across > this issue with MySQL and MariaDB in the past and keep monitoring the MySQL > set-up for such errors. > > Thank you, > Chalitha. > > On Thu, Aug 20, 2015 at 5:18 PM, Isuruwan Herath <isuru...@wso2.com> > wrote: > >> Hi Chalitha, >> >> On Thu, Aug 20, 2015 at 3:37 PM, Shazni Nazeer <sha...@wso2.com> wrote: >> >>> Hi Chalitha, >>> >>> We checked this with local Oracle (Oracle express edition) setup. >>> Following are the investigations. >>> >>> 1. Initially there are only two inactive connections. >>> >>> SQL> SELECT SID, SERIAL#, STATUS, SERVER FROM V$SESSION WHERE >>> USERNAME='GREGREGISTRY'; >>> >>> SID SERIAL# STATUS SERVER >>> ---------- ---------- -------- --------- >>> 16 51 INACTIVE DEDICATED >>> 103 53 INACTIVE DEDICATED >>> >>> 2. Import a registry and add some resources - At thus point the number >>> of connections increase and there are both active and inactive connections. >>> This is possibly due to indexing thread continuously access the REG_LOG >>> table and it depends on the number of indexing threads. >>> >>> 3. After some idle time, the number of connections drop down to above >>> two inactive connections. >>> >>> 4. Go into overview page and view the asset details. This would probably >>> increase the connections if it doesn't get served from cache. >>> >>> 5. After some idle time it again drops down to two inactive connections >>> >>> I suppose there are some settings to be done on the Oracle end to >>> terminate connections. Is this getting reproduced in MySQL, MariaDB in your >>> end? >>> >> Please increase the max session and process count in Oracle and try the >> same. Since these are global parameters, please monitor the total counts of >> v$session and v$process tables while this error occurs (processes might be >> consumed by some other connection as well). If the count of the above is >> less than the max configured for Oracle, then this error should not occur. >> >> Thanks! >> Isuruwan >> >>> >>> >>> Shazni Nazeer >>> Mob : +94 777737331 >>> LinkedIn : http://lk.linkedin.com/in/shazninazeer >>> Blog : http://shazninazeer.blogspot.com >>> >>> On Thu, Aug 20, 2015 at 10:15 AM, Chalitha Waldeniyage < >>> chali...@wso2.com> wrote: >>> >>>> Hi Chandana, >>>> >>>> We have reproduced this with clean databases as well. server start-up >>>> seems like several registry artifacts trying to establish db connection and >>>> connection pool exhausted and getting the issue reported in [1]. It's >>>> continuously growing the active connections.In order to recover database >>>> server needed to be restart. >>>> >>>> [1] https://wso2.org/jira/browse/REGISTRY-2762 >>>> >>>> >>>> >>>> On Fri, Aug 14, 2015 at 12:26 PM, Chalitha Waldeniyage < >>>> chali...@wso2.com> wrote: >>>> >>>>> As per the load test on Greg 5.0.0 alpha,we have run a Jmeter script >>>>> on the QA two instances. >>>>> This jmeter script initially copying a text file on the registry root >>>>> location . This works fine and we have worked with the setup after the >>>>> load >>>>> test. But again we have put a load on the >>>>> /_system/governance/publisher_notes/ location copying 7000 artifacts. >>>>> After this load test while restarting the server we observed that the >>>>> startup hangs at org.wso2.carbon.core.init.CarbonServerManager, >>>>> repository/deployment/server/ >>>>> >>>>> We enabled the log4j.logger.org.wso2 DEBUG logs and noticed that it's >>>>> running a CacheCleanupTask and indexing the connection. >>>>> >>>>> According to the offline chat with the team, our first approach was >>>>> strategically wrong which was coping the 10,000 artifacts to the root >>>>> location. Therefore we have worked on following two workarounds >>>>> >>>>> [1] In order to clear the registry H2 space, remove H2 database from >>>>> repository/databases. >>>>> >>>>> [2] Start with the fresh pack but pointing to the same old gov and >>>>> conf dabases. >>>>> >>>>> But any of these workarounds suggested did not solve the original >>>>> issue we are facing (server hanging when starting the server) >>>>> >>>>> Right now we are trying to reproduce the scenario again by dropping >>>>> the gov/confg dbs & running the load test again under _system/governance/. >>>>> We will update the threads with the findings. >>>>> >>>>> >>>>> Thank you, >>>>> Chalitha. >>>>> -- >>>>> *Chalitha Maheshwari* >>>>> Software Engineer-QA, >>>>> WSO2 Inc. >>>>> >>>>> *E-mail:* chali...@wso2.com >>>>> *Mobile: *+94710 411 112 >>>>> >>>> >>>> >>>> >>>> -- >>>> *Chalitha Maheshwari* >>>> Software Engineer-QA, >>>> WSO2 Inc. >>>> >>>> *E-mail:* chali...@wso2.com >>>> *Mobile: *+94710 411 112 >>>> >>> >>> >>> _______________________________________________ >>> Dev mailing list >>> Dev@wso2.org >>> http://wso2.org/cgi-bin/mailman/listinfo/dev >>> >>> >> >> >> -- >> Isuruwan Herath >> Technical Lead >> >> Contact: +94 776 273 296 >> > > > > -- > *Chalitha Maheshwari* > Software Engineer-QA, > WSO2 Inc. > > *E-mail:* chali...@wso2.com > *Mobile: *+94710 411 112 > > _______________________________________________ > Dev mailing list > Dev@wso2.org > http://wso2.org/cgi-bin/mailman/listinfo/dev > > -- *Chandana Napagoda* Senior Software Engineer WSO2 Inc. - http://wso2.org *Email : chand...@wso2.com <chand...@wso2.com>**Mobile : +94718169299* *Blog : http://cnapagoda.blogspot.com <http://cnapagoda.blogspot.com>*
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