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What's new in ArpeOracle

Feature-oriented release highlights for ArpeOracle — the pure-native Oracle ADBC driver that speaks TNS (Oracle Net) + TTC directly over TCP and streams Apache Arrow end-to-end, with no OCI, no Instant Client, and no ODBC.

tnsnames.ora aliases — October 2026 (v0.3.11)​

New option adbc.arpeoracle.tns_admin; tnsnames.ora aliases resolved.

Windows parallel connects — October 2026 (v0.3.10)​

Parallel connections on Windows fixed.

Result schema without executing — September 2026 (v0.3.9)​

ExecuteSchema returns a query's Arrow schema without running it.

Native encryption on by server request — September 2026 (v0.3.8)​

The default NNE stance now lets the server decide, like Oracle's own clients.

Parquet-friendly INTERVAL export — September 2026 (v0.3.7)​

INTERVAL YEAR TO MONTH and INTERVAL DAY TO SECOND columns now export straight to Parquet (via FastBCP, pandas, and other Parquet writers), where they previously failed because Arrow's interval(month_day_nano) has no Parquet representation. By default they map to int64 (total months) and a utf8 ISO-8601 duration string, matching the schema FastBCP's regular Oracle driver produces. This changes the default Arrow types for interval columns — set interval_mapping=native to restore the previous interval(month_day_nano) output. See Data types.

Application name in V$SESSION — September 2026 (v0.3.6)​

app_name now sets V$SESSION.PROGRAM and MODULE.

RAC/SCAN redirects, continued — September 2026 (v0.3.5)​

Fixes connecting through a SCAN listener whose redirect spans two packets.

RAC/SCAN redirects — September 2026 (v0.3.4)​

Fixes connecting through a listener that answers with a redirect.

Renamed ArpeOracle — September 2026 (v0.3.3)​

ArrowTTC is now ArpeOracle: options move to adbc.arpeoracle.* and arpeoracle.sdo.*.

Reliability & performance — September 2026 (v0.3.2)​

A round of correctness and security-hardening fixes across the login, network, and decode paths, plus lower memory and fewer copies on the fetch path. No configuration or behaviour change.

Oracle Spatial support — September 2026 (v0.3.1)​

MDSYS.SDO_GEOMETRY columns now read and write as GeoArrow, so spatial data flows straight into tools like GeoPandas and DuckDB — points, lines, and polygons, SRID included. See Data types.

RHEL 8 support & tuning — September 2026 (v0.3.0)​

The Linux driver now runs on RHEL 8 / Rocky 8 and newer out of the box. A new option raises the network packet size for faster large fetches, and the default memory footprint is leaner.

Oracle 23ai & 26ai — September 2026 (v0.2.10)​

Native support for Oracle 23ai and 26ai, including their new BOOLEAN, JSON, and VECTOR column types — validated live.

Oracle 12c–21c validated — August 2026 (v0.2.9)​

Oracle 12c, 18c, 19c, and 21c are all validated live on the same driver binary.

Hardened release binaries — August 2026 (v0.2.8)​

The published Linux and Windows binaries are stripped, hardened shipping artifacts. Distribution hygiene only; no functional change.

Faster result decoding — August 2026 (v0.2.7)​

Internal optimizations cut about 13% of decode CPU on wide scans, with identical Arrow output.

Login-path security fixes — August 2026 (v0.2.6)​

Security fixes to the authentication path. No behaviour change on a healthy connection.

Prebuilt binaries — August 2026 (v0.2.5)​

Every release now ships prebuilt linux-x64 and win-x64 binaries for anonymous install, and adds GetStatisticNames.

Statement cache & wider encryption — August 2026 (v0.2.4)​

A per-connection statement cache reuses server cursors across repeated SQL, avoiding cursor-limit failures on long-lived connections (adbc.arpeoracle.statement_cache_size, default 20). Native Network Encryption now also works with Oracle 21c and 23ai.

Standalone driver, Windows support & licence gate — August 2026 (v0.2.3)​

ArpeOracle became an independently installable ADBC driver:

  • Load by name — install writes an ADBC driver manifest, so clients connect with driver="arpeoracle" and portable oracle:// URIs.
  • Windows x64 — runs on Windows x64.
  • Licence enforced — the licence check at connect is always on.

OAuth2 / Microsoft Entra ID login — August 2026 (v0.2.2)​

Log in with a Microsoft Entra ID (Azure AD) token — no password, no OCI key. Verified live against Autonomous Database.

Oracle Cloud Autonomous Database — August 2026 (v0.2.0)​

Connect to Oracle Autonomous Database over mutual TLS with the downloaded wallet, using a password or an OCI IAM database token. Verified end to end against a live instance.

Query cancellation over TLS — August 2026 (v0.2.1)​

Cancelling a long-running query now works on encrypted (TCPS) connections, not just plaintext.

Native Network Encryption — July/August 2026 (v0.1.3, v0.1.7)​

Encrypt the whole session with AES-256 without TCPS, using Oracle's native network encryption. Set encryption=required (and/or data_integrity=required).

The native TNS + TTC engine — foundational (v0.1.0)​

ArpeOracle speaks Oracle Net + Two-Task Common directly over TCP/TLS — no OCI, no Instant Client, no ODBC — and streams results straight into Apache Arrow. From day one:

  • Fast streaming fetch — ~2.05× faster than python-oracledb's own Arrow path on a native-encrypted LINEITEM extract.
  • Flexible NUMBER mapping — lossless text (default), float64, or decimal128.
  • Full authentication — O5LOGON password, proxy, and change-password, with the password never in clear.
  • TLS & wallets — require / verify-ca / verify-full, including mutual TLS.
  • Full ADBC 1.1.0 surface — prepared statements, DML, transactions, bulk ingest, LOB streaming, cancellation, and metadata.

To report an issue or request a licence, contact sales@arpe.io or visit https://www.arpe.io.