# Attempting to open new session, but session already open for this thread

**URL:** <https://forum.inductiveautomation.com/t/attempting-to-open-new-session-but-session-already-open-for-this-thread/16154>\
**Category:** Ignition\
**Created:** [November 28, 2017, 8:30pm UTC](https://forum.inductiveautomation.com/t/attempting-to-open-new-session-but-session-already-open-for-this-thread/16154 "2017-11-28T20:30:51Z")\
**Posts on this page:** 6\
**Page:** 1

<div class="post-metadata">

**Author:** ![abishur](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/abishur/32/9096_2.png) [@abishur](https://forum.inductiveautomation.com/u/abishur)\
**Post date:** [November 28, 2017, 8:30pm UTC](https://forum.inductiveautomation.com/t/attempting-to-open-new-session-but-session-already-open-for-this-thread/16154/1 "2017-11-28T20:30:51Z")

</div>

Using Ignition 7.9.2

Once a minute, every minute I get the following two errors in my log. I’m not sure what’s creating them and from what I can tell each one says the exact same thing. Any ideas?

PersistanceInterface - Attempting to open new session, but session already open for this thread.

```auto
java.lang.Exception: null

at com.inductiveautomation.ignition.gateway.localdb.PersistenceInterfaceImpl.getSession(PersistenceInterfaceImpl.java:63)

at com.inductiveautomation.ignition.gateway.localdb.PersistenceInterfaceImpl.getSession(PersistenceInterfaceImpl.java:46)

at com.inductiveautomation.ignition.gateway.sqltags.tagproviders.internal.InternalTagStore.openIfNot(InternalTagStore.java:1300)

at com.inductiveautomation.ignition.gateway.sqltags.tagproviders.internal.InternalTagStore.internalStoreTagValues(InternalTagStore.java:1339)

at com.inductiveautomation.ignition.gateway.sqltags.tagproviders.internal.InternalTagStore.storeTagValues(InternalTagStore.java:1248)

at com.inductiveautomation.ignition.gateway.sqltags.providers.AbstractStoreBasedTagProvider.tagValuesChanged(AbstractStoreBasedTagProvider.java:2449)

at com.inductiveautomation.ignition.gateway.sqltags.scanclasses.SimpleExecutableScanClass$ScanClassTagEvaluationContext.processAndReset(SimpleExecutableScanClass.java:1131)

at com.inductiveautomation.ignition.gateway.sqltags.scanclasses.SimpleExecutableScanClass.run(SimpleExecutableScanClass.java:920)

at com.inductiveautomation.ignition.common.execution.impl.BasicExecutionEngine$SelfSchedulingRunner.run(BasicExecutionEngine.java:511)

at com.inductiveautomation.ignition.common.execution.impl.BasicExecutionEngine$TrackedTask.run(BasicExecutionEngine.java:593)

at java.util.concurrent.Executors$RunnableAdapter.call(Unknown Source)

at java.util.concurrent.FutureTask.run(Unknown Source)

at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$201(Unknown Source)

at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(Unknown Source)

at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)

at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)

at java.lang.Thread.run(Unknown Source)

```

Config - Error storing tag values.

```auto
simpleorm.utils.SException$Error: Transaction already committed, need begin.

at simpleorm.sessionjdbc.SSessionJdbc.checkBegunThread(SSessionJdbc.java:335)

at simpleorm.sessionjdbc.SSessionJdbc.rollback(SSessionJdbc.java:388)

at com.inductiveautomation.ignition.gateway.localdb.PersistenceInterfaceImpl.getSession(PersistenceInterfaceImpl.java:64)

at com.inductiveautomation.ignition.gateway.localdb.PersistenceInterfaceImpl.getSession(PersistenceInterfaceImpl.java:46)

at com.inductiveautomation.ignition.gateway.sqltags.tagproviders.internal.InternalTagStore.openIfNot(InternalTagStore.java:1300)

at com.inductiveautomation.ignition.gateway.sqltags.tagproviders.internal.InternalTagStore.internalStoreTagValues(InternalTagStore.java:1339)

at com.inductiveautomation.ignition.gateway.sqltags.tagproviders.internal.InternalTagStore.storeTagValues(InternalTagStore.java:1248)

at com.inductiveautomation.ignition.gateway.sqltags.providers.AbstractStoreBasedTagProvider.tagValuesChanged(AbstractStoreBasedTagProvider.java:2449)

at com.inductiveautomation.ignition.gateway.sqltags.scanclasses.SimpleExecutableScanClass$ScanClassTagEvaluationContext.processAndReset(SimpleExecutableScanClass.java:1131)

at com.inductiveautomation.ignition.gateway.sqltags.scanclasses.SimpleExecutableScanClass.run(SimpleExecutableScanClass.java:920)

at com.inductiveautomation.ignition.common.execution.impl.BasicExecutionEngine$SelfSchedulingRunner.run(BasicExecutionEngine.java:511)

at com.inductiveautomation.ignition.common.execution.impl.BasicExecutionEngine$TrackedTask.run(BasicExecutionEngine.java:593)

at java.util.concurrent.Executors$RunnableAdapter.call(Unknown Source)

at java.util.concurrent.FutureTask.run(Unknown Source)

at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$201(Unknown Source)

at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(Unknown Source)

at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)

at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)

at java.lang.Thread.run(Unknown Source)

```

---

<div class="post-metadata">

**Author:** ![paul-griffith](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/paul-griffith/32/37249_2.png) [@paul-griffith](https://forum.inductiveautomation.com/u/paul-griffith)\
**Post date:** [November 28, 2017, 9:45pm UTC](https://forum.inductiveautomation.com/t/attempting-to-open-new-session-but-session-already-open-for-this-thread/16154/2 "2017-11-28T21:45:54Z")

</div>

You should upgrade to 7.9.5. It looks like the internal DB’s access system (designed to be single-threaded) is overrunning itself; so there are multiple transactions happening at the same time on different cursors. There’s a fix for this in 7.9.5.

---

<div class="post-metadata">

**Author:** ![abishur](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/abishur/32/9096_2.png) [@abishur](https://forum.inductiveautomation.com/u/abishur)\
**Post date:** [November 28, 2017, 10:27pm UTC](https://forum.inductiveautomation.com/t/attempting-to-open-new-session-but-session-already-open-for-this-thread/16154/3 "2017-11-28T22:27:44Z")

</div>

Thanks Paul, I’ll check and find out if that’s an option they’re willing to take

---

<div class="post-metadata">

**Author:** ![bfuson](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/bfuson/32/4597_2.png) [@bfuson](https://forum.inductiveautomation.com/u/bfuson)\
**Post date:** [April 18, 2018, 9:05pm UTC](https://forum.inductiveautomation.com/t/attempting-to-open-new-session-but-session-already-open-for-this-thread/16154/4 "2018-04-18T21:05:22Z")

</div>

I recently started having a similar issue. I assumed it’s a syntax error in one of my named queries, but I haven’t found it yet…

```auto
>Config	18Apr2018 16:57:46	Error storing tag values.

simpleorm.utils.SException$Error: Transaction already committed, need begin.

at simpleorm.sessionjdbc.SSessionJdbc.checkBegunThread(SSessionJdbc.java:353)

at simpleorm.sessionjdbc.SSessionJdbc.rollback(SSessionJdbc.java:408)

at com.inductiveautomation.ignition.gateway.localdb.PersistenceInterfaceImpl.getSession(PersistenceInterfaceImpl.java:57)

at com.inductiveautomation.ignition.gateway.localdb.PersistenceInterfaceImpl.getSession(PersistenceInterfaceImpl.java:44)

at com.inductiveautomation.ignition.gateway.sqltags.tagproviders.internal.InternalTagStore.openIfNot(InternalTagStore.java:1303)

at com.inductiveautomation.ignition.gateway.sqltags.tagproviders.internal.InternalTagStore.internalStoreTagValues(InternalTagStore.java:1341)

at com.inductiveautomation.ignition.gateway.sqltags.tagproviders.internal.InternalTagStore.storeTagValues(InternalTagStore.java:1250)

at com.inductiveautomation.ignition.gateway.sqltags.providers.AbstractStoreBasedTagProvider.tagValuesChanged(AbstractStoreBasedTagProvider.java:2433)

at com.inductiveautomation.ignition.gateway.sqltags.scanclasses.SimpleExecutableScanClass$ScanClassTagEvaluationContext.processAndReset(SimpleExecutableScanClass.java:1136)

at com.inductiveautomation.ignition.gateway.sqltags.scanclasses.SimpleExecutableScanClass.run(SimpleExecutableScanClass.java:896)

at com.inductiveautomation.ignition.common.execution.impl.BasicExecutionEngine$SelfSchedulingRunner.run(BasicExecutionEngine.java:483)

at com.inductiveautomation.ignition.common.execution.impl.BasicExecutionEngine$TrackedTask.run(BasicExecutionEngine.java:565)

at java.util.concurrent.Executors$RunnableAdapter.call(Unknown Source)

at java.util.concurrent.FutureTask.run(Unknown Source)

at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$201(Unknown Source)

at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(Unknown Source)

at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)

at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)

at java.lang.Thread.run(Unknown Source)

```

```auto
>PersistenceInterface	18Apr2018 16:57:46	Attempting to open new session, but session already open for this thread.

java.lang.Exception: null

at com.inductiveautomation.ignition.gateway.localdb.PersistenceInterfaceImpl.getSession(PersistenceInterfaceImpl.java:56)

at com.inductiveautomation.ignition.gateway.localdb.PersistenceInterfaceImpl.getSession(PersistenceInterfaceImpl.java:44)

at com.inductiveautomation.ignition.gateway.sqltags.tagproviders.internal.InternalTagStore.openIfNot(InternalTagStore.java:1303)

at com.inductiveautomation.ignition.gateway.sqltags.tagproviders.internal.InternalTagStore.internalStoreTagValues(InternalTagStore.java:1341)

at com.inductiveautomation.ignition.gateway.sqltags.tagproviders.internal.InternalTagStore.storeTagValues(InternalTagStore.java:1250)

at com.inductiveautomation.ignition.gateway.sqltags.providers.AbstractStoreBasedTagProvider.tagValuesChanged(AbstractStoreBasedTagProvider.java:2433)

at com.inductiveautomation.ignition.gateway.sqltags.scanclasses.SimpleExecutableScanClass$ScanClassTagEvaluationContext.processAndReset(SimpleExecutableScanClass.java:1136)

at com.inductiveautomation.ignition.gateway.sqltags.scanclasses.SimpleExecutableScanClass.run(SimpleExecutableScanClass.java:896)

at com.inductiveautomation.ignition.common.execution.impl.BasicExecutionEngine$SelfSchedulingRunner.run(BasicExecutionEngine.java:483)

at com.inductiveautomation.ignition.common.execution.impl.BasicExecutionEngine$TrackedTask.run(BasicExecutionEngine.java:565)

at java.util.concurrent.Executors$RunnableAdapter.call(Unknown Source)

at java.util.concurrent.FutureTask.run(Unknown Source)

at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$201(Unknown Source)

at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(Unknown Source)

at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)

at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)

```

---

<div class="post-metadata">

**Author:** ![paul-griffith](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/paul-griffith/32/37249_2.png) [@paul-griffith](https://forum.inductiveautomation.com/u/paul-griffith)\
**Post date:** [April 18, 2018, 10:30pm UTC](https://forum.inductiveautomation.com/t/attempting-to-open-new-session-but-session-already-open-for-this-thread/16154/5 "2018-04-18T22:30:55Z")

</div>

I wouldn’t worry about something that you’ve done - with an internal DB error, I would recommend going straight to support to get things straightened out. That’s not a situation that should happen in normal operation.

---

<div class="post-metadata">

**Author:** ![Abidine79](https://avatars.discourse-cdn.com/v4/letter/a/f07891/32.png) [@Abidine79](https://forum.inductiveautomation.com/u/Abidine79)\
**Post date:** [April 20, 2020, 1:54pm UTC](https://forum.inductiveautomation.com/t/attempting-to-open-new-session-but-session-already-open-for-this-thread/16154/6 "2020-04-20T13:54:18Z")

</div>

Hi, We’ve got the same error ‘‘Attempting to open new session, but session already open for this thread’’. We couldn’t create a new tags or delete ancient tags. We’ve only restart the Ignition Gateway and the problem was resolved.