two version of R2R are here HEAD master

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diff --git a/.venv/lib/python3.12/site-packages/sqlalchemy/dialects/oracle/provision.py b/.venv/lib/python3.12/site-packages/sqlalchemy/dialects/oracle/provision.py
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+# dialects/oracle/provision.py
+# Copyright (C) 2005-2025 the SQLAlchemy authors and contributors
+# <see AUTHORS file>
+#
+# This module is part of SQLAlchemy and is released under
+# the MIT License: https://www.opensource.org/licenses/mit-license.php
+# mypy: ignore-errors
+
+from ... import create_engine
+from ... import exc
+from ... import inspect
+from ...engine import url as sa_url
+from ...testing.provision import configure_follower
+from ...testing.provision import create_db
+from ...testing.provision import drop_all_schema_objects_post_tables
+from ...testing.provision import drop_all_schema_objects_pre_tables
+from ...testing.provision import drop_db
+from ...testing.provision import follower_url_from_main
+from ...testing.provision import log
+from ...testing.provision import post_configure_engine
+from ...testing.provision import run_reap_dbs
+from ...testing.provision import set_default_schema_on_connection
+from ...testing.provision import stop_test_class_outside_fixtures
+from ...testing.provision import temp_table_keyword_args
+from ...testing.provision import update_db_opts
+
+
+@create_db.for_db("oracle")
+def _oracle_create_db(cfg, eng, ident):
+    # NOTE: make sure you've run "ALTER DATABASE default tablespace users" or
+    # similar, so that the default tablespace is not "system"; reflection will
+    # fail otherwise
+    with eng.begin() as conn:
+        conn.exec_driver_sql("create user %s identified by xe" % ident)
+        conn.exec_driver_sql("create user %s_ts1 identified by xe" % ident)
+        conn.exec_driver_sql("create user %s_ts2 identified by xe" % ident)
+        conn.exec_driver_sql("grant dba to %s" % (ident,))
+        conn.exec_driver_sql("grant unlimited tablespace to %s" % ident)
+        conn.exec_driver_sql("grant unlimited tablespace to %s_ts1" % ident)
+        conn.exec_driver_sql("grant unlimited tablespace to %s_ts2" % ident)
+        # these are needed to create materialized views
+        conn.exec_driver_sql("grant create table to %s" % ident)
+        conn.exec_driver_sql("grant create table to %s_ts1" % ident)
+        conn.exec_driver_sql("grant create table to %s_ts2" % ident)
+
+
+@configure_follower.for_db("oracle")
+def _oracle_configure_follower(config, ident):
+    config.test_schema = "%s_ts1" % ident
+    config.test_schema_2 = "%s_ts2" % ident
+
+
+def _ora_drop_ignore(conn, dbname):
+    try:
+        conn.exec_driver_sql("drop user %s cascade" % dbname)
+        log.info("Reaped db: %s", dbname)
+        return True
+    except exc.DatabaseError as err:
+        log.warning("couldn't drop db: %s", err)
+        return False
+
+
+@drop_all_schema_objects_pre_tables.for_db("oracle")
+def _ora_drop_all_schema_objects_pre_tables(cfg, eng):
+    _purge_recyclebin(eng)
+    _purge_recyclebin(eng, cfg.test_schema)
+
+
+@drop_all_schema_objects_post_tables.for_db("oracle")
+def _ora_drop_all_schema_objects_post_tables(cfg, eng):
+    with eng.begin() as conn:
+        for syn in conn.dialect._get_synonyms(conn, None, None, None):
+            conn.exec_driver_sql(f"drop synonym {syn['synonym_name']}")
+
+        for syn in conn.dialect._get_synonyms(
+            conn, cfg.test_schema, None, None
+        ):
+            conn.exec_driver_sql(
+                f"drop synonym {cfg.test_schema}.{syn['synonym_name']}"
+            )
+
+        for tmp_table in inspect(conn).get_temp_table_names():
+            conn.exec_driver_sql(f"drop table {tmp_table}")
+
+
+@drop_db.for_db("oracle")
+def _oracle_drop_db(cfg, eng, ident):
+    with eng.begin() as conn:
+        # cx_Oracle seems to occasionally leak open connections when a large
+        # suite it run, even if we confirm we have zero references to
+        # connection objects.
+        # while there is a "kill session" command in Oracle Database,
+        # it unfortunately does not release the connection sufficiently.
+        _ora_drop_ignore(conn, ident)
+        _ora_drop_ignore(conn, "%s_ts1" % ident)
+        _ora_drop_ignore(conn, "%s_ts2" % ident)
+
+
+@stop_test_class_outside_fixtures.for_db("oracle")
+def _ora_stop_test_class_outside_fixtures(config, db, cls):
+    try:
+        _purge_recyclebin(db)
+    except exc.DatabaseError as err:
+        log.warning("purge recyclebin command failed: %s", err)
+
+    # clear statement cache on all connections that were used
+    # https://github.com/oracle/python-cx_Oracle/issues/519
+
+    for cx_oracle_conn in _all_conns:
+        try:
+            sc = cx_oracle_conn.stmtcachesize
+        except db.dialect.dbapi.InterfaceError:
+            # connection closed
+            pass
+        else:
+            cx_oracle_conn.stmtcachesize = 0
+            cx_oracle_conn.stmtcachesize = sc
+    _all_conns.clear()
+
+
+def _purge_recyclebin(eng, schema=None):
+    with eng.begin() as conn:
+        if schema is None:
+            # run magic command to get rid of identity sequences
+            # https://floo.bar/2019/11/29/drop-the-underlying-sequence-of-an-identity-column/  # noqa: E501
+            conn.exec_driver_sql("purge recyclebin")
+        else:
+            # per user: https://community.oracle.com/tech/developers/discussion/2255402/how-to-clear-dba-recyclebin-for-a-particular-user  # noqa: E501
+            for owner, object_name, type_ in conn.exec_driver_sql(
+                "select owner, object_name,type from "
+                "dba_recyclebin where owner=:schema and type='TABLE'",
+                {"schema": conn.dialect.denormalize_name(schema)},
+            ).all():
+                conn.exec_driver_sql(f'purge {type_} {owner}."{object_name}"')
+
+
+_all_conns = set()
+
+
+@post_configure_engine.for_db("oracle")
+def _oracle_post_configure_engine(url, engine, follower_ident):
+    from sqlalchemy import event
+
+    @event.listens_for(engine, "checkout")
+    def checkout(dbapi_con, con_record, con_proxy):
+        _all_conns.add(dbapi_con)
+
+    @event.listens_for(engine, "checkin")
+    def checkin(dbapi_connection, connection_record):
+        # work around cx_Oracle issue:
+        # https://github.com/oracle/python-cx_Oracle/issues/530
+        # invalidate oracle connections that had 2pc set up
+        if "cx_oracle_xid" in connection_record.info:
+            connection_record.invalidate()
+
+
+@run_reap_dbs.for_db("oracle")
+def _reap_oracle_dbs(url, idents):
+    log.info("db reaper connecting to %r", url)
+    eng = create_engine(url)
+    with eng.begin() as conn:
+        log.info("identifiers in file: %s", ", ".join(idents))
+
+        to_reap = conn.exec_driver_sql(
+            "select u.username from all_users u where username "
+            "like 'TEST_%' and not exists (select username "
+            "from v$session where username=u.username)"
+        )
+        all_names = {username.lower() for (username,) in to_reap}
+        to_drop = set()
+        for name in all_names:
+            if name.endswith("_ts1") or name.endswith("_ts2"):
+                continue
+            elif name in idents:
+                to_drop.add(name)
+                if "%s_ts1" % name in all_names:
+                    to_drop.add("%s_ts1" % name)
+                if "%s_ts2" % name in all_names:
+                    to_drop.add("%s_ts2" % name)
+
+        dropped = total = 0
+        for total, username in enumerate(to_drop, 1):
+            if _ora_drop_ignore(conn, username):
+                dropped += 1
+        log.info(
+            "Dropped %d out of %d stale databases detected", dropped, total
+        )
+
+
+@follower_url_from_main.for_db("oracle")
+def _oracle_follower_url_from_main(url, ident):
+    url = sa_url.make_url(url)
+    return url.set(username=ident, password="xe")
+
+
+@temp_table_keyword_args.for_db("oracle")
+def _oracle_temp_table_keyword_args(cfg, eng):
+    return {
+        "prefixes": ["GLOBAL TEMPORARY"],
+        "oracle_on_commit": "PRESERVE ROWS",
+    }
+
+
+@set_default_schema_on_connection.for_db("oracle")
+def _oracle_set_default_schema_on_connection(
+    cfg, dbapi_connection, schema_name
+):
+    cursor = dbapi_connection.cursor()
+    cursor.execute("ALTER SESSION SET CURRENT_SCHEMA=%s" % schema_name)
+    cursor.close()
+
+
+@update_db_opts.for_db("oracle")
+def _update_db_opts(db_url, db_opts, options):
+    """Set database options (db_opts) for a test database that we created."""
+    if (
+        options.oracledb_thick_mode
+        and sa_url.make_url(db_url).get_driver_name() == "oracledb"
+    ):
+        db_opts["thick_mode"] = True