code: public final int getTransactionIsolation() 
      {
          if (TraceComponent.isAnyTracingEnabled() && tc.isDebugEnabled()) 
          {
              try {
                  Tr.debug(this, tc, "The current isolation level from our tracking is: ", currentTransactionIsolation);
                  Tr.debug(this, tc, "Isolation reported by the JDBC driver: ", sqlConn.getTransactionIsolation());
              } catch (Throwable x) {
                  // NO FFDC needed
                  // do nothing as we are taking the isolation level here for debugging reasons only
              }
          }
  
          return currentTransactionIsolation;
      }
docs: Get the transactionIsolation level