Or use tasklist /m on running sqlplus.exe – check for missing 64-bit modules. file $ORACLE_HOME/bin/sqlplus Output: ELF 64-bit LSB executable, x86-64
| Package | Size | Use Case | |---------|------|-----------| | | ~150-200 MB | Full runtime for production apps. | | Basic Light | ~50 MB | Smaller, supports only UTF-8, English, and a subset of character sets. | | Instant Client | ~70-150 MB | Lightweight, no installation needed (unzip and run). Ideal for developers. | | Administrator | ~600 MB+ (full Oracle Home) | Includes SQL*Loader, Export/Import, Net Manager, etc. Used by DBAs. | | Runtime | ~300 MB | Smaller than Administrator, enough for most applications. | oracle client download 64-bit
Also test:
https://download.oracle.com/otn/software/instantclient/1918000/instantclient-basic-linux.x64-19.18.0.0.0dbru.zip Or use tasklist /m on running sqlplus