Alternatives and Migration Path If possible, prefer updating applications to use supported clients:
Your 32-bit application is finding a 64-bit Oracle client first in the PATH. Fix: Move the 32-bit Oracle bin folder to the front of the system PATH variable. oracle client 11204 download 32 bit top
Select only the essential components: SQL*Plus, Oracle ODBC Driver, and Oracle Net. Configure the tnsnames.ora NETWORK\ADMIN to point to the new 19c database. Alternatives and Migration Path If possible, prefer updating
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