+DATA diskgroup filled up on ASM on standby server and now redo isn't being applied

+DATA diskgroup filled up on ASM on standby server and now redo isn't being applied, space is no longer an issue but I am getting similar issues on multiple databases, any ideas / hints how to recover from this?

 on primary

SQL> select max(sequence#), thread# from v$archived_log group by thread#;

MAX(SEQUENCE#)    THREAD#

-------------- ----------

        111068          1

         92725          2

on standby

SQL> select thread#,max(sequence#) from v$archived_log where applied='YES' group by thread#;

   THREAD# MAX(SEQUENCE#)

---------- --------------

         1         109560

         2          91306