APP-AR-11526: ORA-00054: resource busy and acquire with NOWAIT specified or timeout

The issue  reproduced when AutoInvoice is run in parallel by 2 different users and from 2 different machines in apps R12.1.3.

IMPACT:

Due to this issue, users cannot run autoinvoice master concurrent program in parallel.

CAUSE:

Bug 22848122 AUTOINVOICE ERRORS OUT WITH : APP-AR-11526: ORA-00054

SOLUTION:

1. Ensure that you have taken a backup of your system before applying the recommended patch.
2. Apply the patch

3. Recommended Patches

   R12.AR.C: Patch 22848122
   R12.AR.A: No released patch available.
   R12.AR.B: Patch 22848122
   R12.AR.A: Patch 22848122

4. Confirm the file versions listed below, by navigating to the directory where the file is and using:
   strings -a |grep ‘$Header’

5. Fixed Files

   R12.AR.A:
   ad_apply_patch.xml 120.3.12000000.2
   raamtr.opc 120.8.12000000.31
   R12.AR.B:
   raamtr.opc 120.10.12010000.17
   R12.AR.C:
   raamtr.opc 120.36.12020000.4

6. Retest the issue