OceanBase Database Proxy Enterprise Edition V4.3.5

V4.3.5 BP1

Version information

• Release date: September 22, 2025

• Version: V4.3.5 BP1

• RPM version: 4.3.5.1-42025091917

Release purpose

Change the default value of enable_single_leader_node_routing to False.

Bug fixes

• Fixed failure to print memory leak stack traces.
• Fixed core when executing SQL starting with a hint.
• Fixed abnormal exit when a table name in DML was a reserved keyword.
• Fixed inaccurate routing when column names contained #.
• Fixed startup core when getaddrinfo returned more than 64 IPs.
• Fixed disconnections when repeatedly executing scan_all.

V4.3.5

Version information

• Release date: July 16, 2025

• Version: V4.3.5

• RPM version: obproxy-4.3.5.0-282025071514

Version overview

ODP 4.3.5 is the latest 4.3.x release, recommended for POC and production on cloud and on-premises. It adds String routing, partition-key equality derivation, multi-statement transaction routing, month function routing, a session connection pool for short connections, proactive cleanup of deleted MetaDB configuration, refined max-connection error logging, improved single-partition detection and OBKV routing for the RPC proxy, new show commands for internal objects, and better monitoring.

Key features

SQL proxy

Routing improvements

• String-type routing for OceanBase String partition keys.

• Partition-key equality derivation for conditions such as C1 = C2 AND C2 = xxx.

• Multi-statement transaction routing from the first statement after BEGIN/START TRANSACTION.

• month function routing building on V4.3.4 function-expression partition keys.

• Hint parsing failures skip hints and continue partition parsing.

Session connection pool

Reduces TCP churn and variable sync cost when switching OBServer routes in short-connection workloads.

Configuration stability

Cloud ODP periodically loads configuration from MetaDB into VIP-level settings but previously ignored deletions in MetaDB, leaving stale configuration. V4.3.5 detects removed entries and cleans them up.

Usability improvements

Refined too many connections diagnostics in obproxy_diagnosis.log and obproxy_error.log.

RPC proxy

Internal object commands

show commands expose rpcRequest, tabletGroup, globalIndex, QuerySync, TabletLS, Ctx, and related OBKV objects.

Usability improvements

Prometheus metrics add RPC connection and net_entry statistics.

Single-partition table detection

Retries with OB_SCHEMA_ERROR when a single-partition table was misclassified as non-partitioned.

Compatibility changes

Command changes

Parameter changes

Supported OceanBase Database versions

OceanBase Database 4.x, 3.x, and earlier:

• For 3.x and earlier, use ODP V3.2.11.

• For 4.x, use ODP V4.3.1 (LTS).

If you need V4.3.5 features, use V4.3.5; otherwise prefer the V4.3.1 LTS.

Bug fixes

• Fixed core on out-of-memory when handling OBServer responses.
• Fixed error -4002 after drop/recreate with different partition types.
• Fixed SQLMonitorInfo memory leak.
• Fixed error 4723 on range tables after partition changes.
• Fixed long-lived connections after OBI drop.
• Hot-upgrade failures.
• Fixed zone switch routing when tenant had no traffic.
• Fixed blocklisted machines after zone replacement with replica-based read-only routing.
• Fixed getOperationRow on multi-LSOP batch tableQuery.
• Fixed go TestPrimaryAndGlobalIndexNoPartition -4016 through ODP.
• Fixed OB_RPC_TABLE_IGNORE_FIELD memory use.
• Fixed uncleared sub-requests when OBServer could not respond.
• Fixed core on malformed two-in-one write responses.
• Fixed error -4103 on OceanBase 2.0 protocol after allocation failure.
• Fixed missing diagnosis logs on whitelist failure.
• Fixed error -4002 when non-partitioned tables became partitioned after split.