The 64-bit Instant Client is now the standard for Docker containers, cloud deployments (AWS RDS, Azure), and CI/CD pipelines. The drama of the 2000s is gone. The 64-bit architecture is now assumed.
If you get an "Architecture mismatch" error, it means a 32-bit application is trying to use your 64-bit client. You may need to install the 32-bit client side-by-side. oracle 64 bit client
# Download RPM or ZIP from Oracle sudo yum install oracle-instantclient19.14-basic-19.14.0.0.0-1.x86_64.rpm # Or unzip to /opt/oracle/instantclient The 64-bit Instant Client is now the standard
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