BPEL Application Spawns Numerous Database Connections Causing It To Crash

-
Oracle(R) BPEL Process Manager - Version: 10.1.2.0.2

Symptoms
You are running Oracle BPEL application connected to Oracle Databases. There is a poller, which poll the DB for requests inserted by your request engine, these pollers then fire the relevant BPEL process for each request.

During runtime, your application started spawning database connections within minutes, causing it to crash. There are no error messages written into any log file.

Cause
All the concurrent active sessions and the sessions being spawned are waiting on the same resource and throwing the same DB error : ORA-04021: Timeout Occurred While Waiting To Lock Object.

This is a known BPEL PM bug

Bug 5001394 - BYTE OFF MAKES BPEL HANG ON AUDIT_TRAIL, AUD TABLE LOCK & CALLBACK MESG LOST
.
Bug 5001394 - BYTE OFF MAKES BPEL HANG ON AUDIT_TRAIL, AUD TABLE LOCK & CALLBACK MESG LOST
.
Solution
To implement the solution, please execute the following steps:

Apply patch for Bug 5001394. Run the test again

References
Bug 5001394 - 1- BYTE OFF MAKES BPEL HANG ON AUDIT_TRAIL, AUD TABLE LOCK & CALLBACK MESG LOST
Errors
ORA-4021 time-out occurred while waiting to lock object

Comments

Post a Comment

Popular posts from this blog

ORA-44412: XE edition memory parameter invalid or not specified

-
SQL> connect sys as sysdba Enter password: Connected to an idle instance. SQL> startup ORA-44412: XE edition memory parameter invalid or not specified SQL> startup pfile=C:\oraclexe\app\oracle\product\10.2.0\server\config\scripts\init.ora ORACLE instance started. Total System Global Area 805306368 bytes Fixed Size 1289996 bytes Variable Size 209715444 bytes Database Buffers 591396864 bytes Redo Buffers 2904064 bytes Database mounted. Database opened. SQL> create spfile from pfile='C:\oraclexe\app\oracle\product\10.2.0\server\config\scripts\init.ora'; File created. SQL> shutdown Database closed. Database dismounted. ORACLE instance shut down. SQL> startup ORACLE instance started. Total System Global Area 805306368 bytes Fixed Size 1289996 bytes Variable Size 209715444 bytes Database Buffers 591396864 byt...
Read more

How to mount a WD Book Live as NFS in OEL6U3

-
Scenario : I have a Windows 8 (Host) laptop on which I am running two OEL6U3 (Guest) machines in a Virtual Box. I want to have a shared mount between the two Linux machine which will allow me to read/write from both the machines concurrently. Its a very common scenario for a High Availability Environment. Virtual Box provides a facility of creating sharable VDI disks which can be mounted on multiple machines, but it doesn’t allow concurrent read/write access from multiple machines. If you are installing RAC database then its still achievable, because ASM will provide the feature of concurrent read/writes, but if you want to install a WebLogic cluster with High Availability the recommended approach would be to have a Shared Mount. Step to create a shared nfs mount is fairly simple. I am using a WD My Book Live, and will mount the Public folder as shared mount 1. Get the hostname/ip of the WD device. 2. On the Linux Machine 1 create the folder where you want to mount the nfs ...
Read more

BPEL Engine Exceptions ORABPEL 02000 - 02179

-
BPEL Engine Exceptions ORABPEL 02000 - 02179 Engine Exceptions 02000 - 02179 ORABPEL-02000 severity: 10 type: error name: Block element class not valid description: The class \"{0}\" for the block element \"{1}\" does not implement the ICubeBlock interface. All block elements contained within the process domain must implement this interface. ORABPEL-02001 severity: 10 type: error name: Error while creating block element description: An error has occurred while attempting to instantiate the class \"{1}\" for the block element \"{0}\". The exception reported was: {2} ORABPEL-02002 severity: 10 type: error name: Unknown block element classname description: The block element \"{0}\" is missing its classname; this element cannot be created without its classname. ORABPEL-02003 severity: 10 type: error name: Cube element missing id property description: A Cube element is missing its \"id\" property. Every Cube...
Read more