Learn the cause and how to unravel the ORA-01001 error message in Oracle.
Description
When you encounter an ORA-01001 error, the following error message will appear:
ORA-01001: invalid cursor
Cause
You tried to reference a cursor that does not but exist. This might also have occurred because:
You’ve achieved a FETCH cursor earlier than OPENING the cursor. You’ve performed a CLOSE cursor earlier than OPENING the cursor. You’ve achieved a FETCH cursor after CLOSING the cursor.
Resolution
The option(s) to resolve this Oracle error are:
Option #1
Make certain you haven’t CLOSEd the cursor and are still referencing it in your code.
Option #2
Make sure you’ve got OPENed the cursor earlier than calling a FETCH cursor or CLOSE cursor.
Option #3
If the whole lot else is fine, you may additionally need to expand the AREASIZE and MAXOPENCURSORS options.