What causes "Redis update command failed, sql={sql}" in OtterMind/Chat2DB?

Catch IllegalStateException at the call site and inspect getCause() for the underlying SQLException

OtterMind/Chat2DB · error · IllegalStateException

Redis update command failed, sql={sql}

Error message

Redis update command failed, sql={sql}

What it means

Thrown by RedisScriptExecutor.executeUpdate(String sql) as an IllegalStateException when PreparedStatement.executeUpdate fails. This single-argument overload obtains its own connection from Chat2DBContext.getConnection() and executes the SQL. Any exception during prepare or update is caught at line 186, logged via RedisConstants.LOG_EXECUTE_UPDATE_ERROR, and re-thrown with the SQL included.

Source

Thrown at chat2db-community-server/chat2db-community-plugins/chat2db-community-redis/src/main/java/ai/chat2db/plugin/redis/RedisScriptExecutor.java:188

                executeResult.getDataList().set(i, newRow);
            }
        }
    }

    private ExecuteResponse executeUpdate(String sql) {
        ExecuteResponse executeResult = ExecuteResponse.builder().sql(sql).success(Boolean.TRUE).build();
        Connection connection = Chat2DBContext.getConnection();
        try (PreparedStatement stmt = connection.prepareStatement(sql)) {
            long startedAtEpochMs = System.currentTimeMillis();
            long executeStartedNanos = System.nanoTime();
            int n = stmt.executeUpdate();
            long executeDurationNanos = ExecutionTiming.elapsedNanos(executeStartedNanos);
            executeResult.setUpdateCount(n);
            executeResult.setExecutionMetrics(ExecutionTiming.complete(
                    ExecutionTiming.started(startedAtEpochMs), executeDurationNanos, 0L, 0));
        } catch (Exception e) {
            log.error(RedisConstants.LOG_EXECUTE_UPDATE_ERROR, sql, e);
            throw new IllegalStateException("Redis update command failed, sql=" + sql, e);
        }
        return executeResult;
    }

    @Override
    public ExecuteResponse executeUpdate(String sql, Connection connection, int n) {
        ExecuteResponse executeResult = ExecuteResponse.builder().sql(sql).success(Boolean.TRUE).build();
        try (PreparedStatement stmt = connection.prepareStatement(sql)) {
            long startedAtEpochMs = System.currentTimeMillis();
            long executeStartedNanos = System.nanoTime();
            int affectedRows = stmt.executeUpdate();
            long executeDurationNanos = ExecutionTiming.elapsedNanos(executeStartedNanos);
            executeResult.setUpdateCount(affectedRows);
            executeResult.setExecutionMetrics(ExecutionTiming.complete(
                    ExecutionTiming.started(startedAtEpochMs), executeDurationNanos, 0L, 0));
        } catch (Exception e) {
            log.error(RedisConstants.LOG_EXECUTE_UPDATE_ERROR, sql, e);
            throw new IllegalStateException("Redis update command failed, sql=" + sql, e);

View on GitHub (pinned to 5ee1e990e7)

Solutions

Catch IllegalStateException at the call site and inspect getCause() for the underlying SQLException
Validate the Redis write command syntax before calling executeUpdate
Log the failed SQL for diagnosis — it is included in the exception message

Example fix

// before
ExecuteResponse result = executor.executeUpdate(sql);

// after
try {
    ExecuteResponse result = executor.executeUpdate(sql);
} catch (IllegalStateException e) {
    log.error("Redis write failed for SQL: {}", sql, e.getCause());
    throw e; // or handle gracefully
}

Defensive patterns

Strategy: try-catch

Validate before calling

// Validate Redis write command syntax before execution:
if (sql == null || sql.isBlank()) {
    throw new IllegalArgumentException("Redis update SQL must not be blank");
}
// Check that the command starts with a valid Redis verb (SET, DEL, EXPIRE, RENAME, etc.)

Try / catch

try {
    ExecuteResponse result = executor.executeUpdate(sql);
} catch (IllegalStateException e) {
    log.error("Redis update failed for SQL: {}", sql, e.getCause());
    throw e;
}

Prevention

Validate Redis write command syntax before calling executeUpdate
Ensure key names are sanitized via getRedisValue to avoid framing issues
Log the failed SQL — it is included in the exception message for diagnosis

When it happens

Trigger: Calling RedisScriptExecutor.executeUpdate(sql) where the Redis JDBC driver fails on connection.prepareStatement(sql) or stmt.executeUpdate(). Used internally by createRedisKey and update for write operations (SET, RENAME, EXPIRE, etc.).

Common situations: Invalid Redis write command syntax; key name containing unsupported characters after quoting; connection broken; Redis server rejected the command (e.g., wrong number of arguments, type mismatch).

Related errors

AI-assisted analysis of OtterMind/Chat2DB@5ee1e990e7 (2026-08-14). Data as JSON: /api/errors/e2286989c700fb99. Report an issue: GitHub.