DBA_LOCK or DBA_LOCKS

Formatted view on V$LOCK that created via $ORACLE_HOME/rdbms/admin/catblock.sql

• SESSION_ID == SID in V$LOCK
• LOCK_TYPE, LOCK_ID1, LOCK_ID2 formatted value of TYPE, ID1, ID2 from V$LOCK
• MODE_HELD and MODE_REQUESTED formatted value of LMODE and REQUEST from V$LOCK
• LAST_CONVERT == CTIME of V$LOCK
• BLOCKING_OTHERS formatted value of BLOCK from V$LOCK

Reference:

https://docs.oracle.com/en/database/oracle/oracle-database/19/refrn/DBA_LOCK.html#GUID-B19FF191-AC89-498D-B2C1-2A18F63DC03D