# Can I use G1GC with Oracle JVM 8u121 and ES-5.6.2 at production environment?

**URL:** <https://discuss.elastic.co/t/can-i-use-g1gc-with-oracle-jvm-8u121-and-es-5-6-2-at-production-environment/119272>\
**Category:** Elasticsearch\
**Created:** [February 9, 2018, 4:30pm UTC](https://discuss.elastic.co/t/can-i-use-g1gc-with-oracle-jvm-8u121-and-es-5-6-2-at-production-environment/119272 "2018-02-09T16:30:34Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![Claudio\_Ranieri](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/claudio_ranieri/32/25393_2.png) [@Claudio\_Ranieri](https://discuss.elastic.co/u/Claudio_Ranieri)\
**Post date:** [February 9, 2018, 4:30pm UTC](https://discuss.elastic.co/t/can-i-use-g1gc-with-oracle-jvm-8u121-and-es-5-6-2-at-production-environment/119272/1 "2018-02-09T16:30:34Z")

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In post

[https://issues.apache.org/jira/browse/LUCENE-5168](https://issues.apache.org/jira/browse/LUCENE-5168)

They speak about bug "Instance field load is replaced by wrong data Phi".  
This bug appear resolved in 8u121

[https://bugs.java.com/view\_bug.do?bug\_id=8038348](https://bugs.java.com/view_bug.do?bug_id=8038348)

Can I use G1GC with Oracle JVM 8u121 and ES-5.6.2 at production environment without problem the index corruption?

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**Author:** ![system](https://us1.discourse-cdn.com/elastic/original/3X/1/a/1ac57faf039f6b580b3f104ef42a2a89e41014de.png) [@system](https://discuss.elastic.co/u/system)\
**Post date:** [March 9, 2018, 4:30pm UTC](https://discuss.elastic.co/t/can-i-use-g1gc-with-oracle-jvm-8u121-and-es-5-6-2-at-production-environment/119272/2 "2018-03-09T16:30:42Z")

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Closed on March 9, 2018, 4:30pm UTC

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