The primary reason to use the 64-bit version is to match the . If you are running a 64-bit version of Excel, a 64-bit ETL tool, or a 64-bit Java application, you must use the 64-bit client. Key Components SQL*Plus: A command-line tool for executing SQL queries.
Oracle released a 64-bit version of their database for Itanium, and with it came the early 64-bit clients. These were niche, exotic tools used by a select few engineers running heavy computations. The average developer didn't touch them. The world was still running Windows 95, 98, and Windows NT 4.0—all strictly 32-bit. oracle 64 bit client
⚠️ : Your application bitness must match the client bitness. Example: 64-bit Python + 64-bit Oracle Client = OK. 64-bit Python + 32-bit Oracle Client = crashes. The primary reason to use the 64-bit version is to match the
Depending on your needs, Oracle offers different client "flavors": Oracle released a 64-bit version of their database
# Check architecture of oci.dll (Get-Item "C:\oracle\instantclient_21_13\oci.dll").VersionInfo # Or use dumpbin dumpbin /headers oci.dll | findstr "machine" # x64 = 64-bit, x86 = 32-bit