ORA-24909: Call in progress. Current operation cancelled
The OCI call was invoked when another call on the connection was in progress.
Check if the OCI call is supported when the call is in progress under special conditions; for example, if it is being used by a signal handler.
What this means is that an OCI call (Oracle call interface, the lowest language you can program in to access the Oracle database) is issued, while another call is still being executed.
eg: one OCI call tries to read a cursor, but another OCI call, which closes the cursor is already in progress.
There is a bug when using Oracle version 10.2.0.1 which causes this error. Should you be using this version, you might want to upgrade the version of your Oracle server and / or Oracle client.You can also install multiple Oracle clients on your Windows workstation and use Oracle Locator Express to switch between your multiple Oracle Homes.
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Oracle error: ORA-24909 error relation OCI how you can check the OCI call from the databsae or from the application.
On Linux you can use strace to trace a program
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