message: Fix error as connection never get closed / returned to pool
diff: @@ -16,9 +16,12 @@ export default class OracleDB extends GenericDialect<OracleDBLib.IConnection> im
  }];
  private poolCreated = false;
  + private currConnection = null;
  public get connection() {
  if (!this.poolCreated) return;
  - return this.lib.getConnection() as Promise<OracleDBLib.IConnection>;
  + if (!this.currConnection)
  + this.currConnection = this.lib.getConnection() as Promise<OracleDBLib.IConnection>;
  + return this.currConnection;
  }
  queries = queries
  