Add Oracle 11g (11.1/11.2) thin-mode support#1
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Lowers the protocol floor to 11.1 and implements the legacy O5LOGON and TTC wire format pre-12.1 servers use. Validated against Oracle 11.2.0.2 XE: connect, auth, and multi-row VARCHAR2/NUMBER/DATE fetch. - Accept packet: 11.x omits the SDU and OOB fields, so gate their read on protocol version >= 315 (large SDU). - Auth: a 48-byte server session key (11g/10g verifier) derives the combo key with the legacy MD5-XOR scheme instead of 12c PBKDF2. - Execute: the al8pidmlrc fields exist only from 12.1; sending them to an 11.x server caused ORA-03120, so gate them on field version >= 12.1. - Error status: 11.x carries the return code in the early error-number field and omits the trailing number/row-count pair.
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Lowers the protocol floor to 11.1 and implements the legacy O5LOGON and TTC wire format that pre-12.1 servers use. Validated against a live Oracle 11.2.0.2 XE instance: connect, authenticate, and fetch multiple rows with VARCHAR2, NUMBER, and DATE columns.
python-oracledb stops at 12.1 on purpose, so the pre-12.1 wire differences came from go-ora (the open thin driver that speaks 11g) plus packet captures against the live server.
Changes
TNS_VERSION_MIN_ACCEPTED315 -> 313 (11.1). 10g and earlier still rejected (they use the O3LOGON handshake this driver does not implement).al8pidmlrcfields exist only from 12.1; sending them to an 11.x server causedORA-03120(two-task conversion routine: integer overflow), so gate them on field version >= 12.1.Tests
Updated the Accept message tests: protocol 312 (10g) is rejected, protocol 314 (11.2) decodes. Both pass.
Notes
Targets
tablepro-main. After merge, bump TablePro'sPackage.resolvedoracle-nio revision to the merged commit.