有没有办法从这个sql语句和逻辑中删除select count(*）

我有一些C++代码，当一行存在时，它会更新一列，否则什么都不做。这是我的代码现在的样子，select count（*）大约需要15-20秒。我想让这个代码更有效率。

RunUpdateLockAliveTimeStamp

  sCommand << "update APP_CC_LOCKS set ALIVETIMESTAMP = ";
  sCommand << " SYSTIMESTAMP(7)";
  sCommand << " where TRANSACTIONID = ?";

RunSelectCountDataCubeLock

  sCommand << "select count(*) from APP_CC_LOCKS";
  sCommand << " where (((SCENARIOID=? and YEARID=? and ENTITYID=? and PARENTID=? and VALUEID=?) and (LOCKTYPE = ?)) or (LOCKTYPE = ?)) and (TRANSACTIONID != ?) and ((TIMEINSERTED < (select MAX(TIMEINSERTED) from APP_CC_LOCKS ";
  sCommand << " where TRANSACTIONID = ?)) or ((TIMEINSERTED = (select MAX(TIMEINSERTED) from ";
  sCommand << “ APP_CC_LOCKS where TRANSACTIONID = ?)) and TRANSACTIONID <= ?))";

主

        DWORD dwIterationNumber = 0;
        // trying to accquire lock
        cStartTime = DateTimeUtil::currentDateTimeAsMilliseconds();
        while (bLockWasAcquired == false)
        {
              // try to accquire lock
              numBlockingRecords = -1;
              hr = cAccessor.RunSelectCountDataCubeLock(csTransID, lScenario, lYear, lEntity, lParent, lValue, &numBlockingRecords);
              xfm_throw_propagate(FAILED(hr), hr);
              // There's no block record then lock is temporary accquired until we resolve collision
              if (numBlockingRecords == 0)
              {
                    // The lock is now accquired
                    bLockWasAcquired = true;
                    break;
              }
              if (dwIterationNumber > g_lNumIterBeforeUpdatingTimeStamp)
              {
                    //csSQLCmd.clear();
                    hr = cAccessor.RunUpdateLockAliveTimeStamp(csTransID);
                    xfm_throw_propagate(FAILED(hr), hr);
              }
        }