From what [~jhalliday] explained the call of {{XAResource.recover(TMENDRSCAN)}} does not mean there is no more work done with the XAResource. The recovery modules can share the {{XAResource}} and when the {{XARecoveryModule}} finishes its work there still could be other modules touching the resource. If the {{TMENDRSCAN}} means closing the underlaying connection it could mean the following module fails to do its work as the XAResource is already "closed".

Create a way to close XAResource at the end of the recovery cycle processing ---------------------------------------------------------------------------- Key: JBTM-3325 URL: https://issues.redhat.com/browse/JBTM-3325 Project: JBoss Transaction Manager Issue Type: Enhancement Components: JTA Affects Versions: 5.10.5.Final Reporter: Ondrej Chaloupka Assignee: Ondrej Chaloupka Priority: Major From discussions about Narayana integration to Agroal (https://agroal.github.io/) there came an idea how to make easier for Agroal to integrate with Narayana recovery processing. Usually (or at least Agroal does so) the brand new {{XAResource}} is provided from the call of the {{XAResourceRecovery}} (https://github.com/jbosstm/jboss-transaction-spi/blob/7.6.0.Final/src/mai...). aka. Agroal implements the {{XAResourceRecovery}} and register it with the Narayana with adding it to with https://github.com/jbosstm/jboss-transaction-spi/blob/7.6.0.Final/src/mai... to be used in {{XARecoveryModule}}. When the periodic recovery cycle ends the {{XAResource}} is not used (next time the recovery processing calls the {{XAResourceRecovery#getXAResources()}} to get the resource for scanning again). The transaction manager announces that the scan ended with call {{XAResource.recover(XAResource.TMENDRSCAN)}} (this is an internal to how Narayana works). It would be beneficial provide an option that Narayana closes {{XAResource}}s at the end of the recovery cycle when Narayana does not plan to use it again. The idea is to check if the {{XAResource}} is {{AutoCloseable}} and if so then the {{XAResource}} is closed at the end of the recovery cycle processing.