PostgreSQL vs Oracle a brief comparison

1. PostgreSQL vs Oracle
PostgreslSQL ORACLE
CTIDs ROWID
MVCC UNDO
Vaccum jobs to space management Auto Undo space management
Shared_bu
ff
ers SGA:db_cache_size
FILLFACTOR PCTFREE
WAL File Redo log
PGDATA ORACLE_BASE
data_directory ORACLE_HOME
Pg_resetwal Alter DB open reset log
Pg_waldump Alter system dump log
Pg_switchwal Alter system switch log
fi
le
PSQL PL/SQL
Pgxlog/PG_WAL FRA
Max_Wal_Size db_recovery_
fi
le_dest_size
OID Object_id
Wal segment Redolog size
LSN Sequence#
Postgres.conf Sp
fi
le,p
fi
le
Basebackup/barman Rman
Basebackup Rman duplicate
Pg_dump Expdp
Pg_restore Impdp
PgAdmin Sqldeveloper
Max_connections Processes,Sessions
E
ff
ective cache ASMLIB ,ASM
Initdb,postgres Srvctl, alter database
pg_stat_archiver V$archived_log
pg_archivecleanup Rman delete archivelog
Min,Max_wal_size Archivelogs deletion Policy
Replication Slot Archive log destination
Vacuum Shrink
pg_stat_activity V$sql

2. Note: Some comparisons maybe is not very closely.
pg_default Users tablespace
pg_global System tablespace
pg_catalog Data dictionary
temp_tablespace DEFAULT_TEMP_TABLSPACE
Tampleate1 Pdb Seed
Wal_level Force logging, add trandata
Pg_hba.conf Listerner con
fi
guration
synchronous commit Commit logging,wait
Work_mem,maintenance_work_mem PGA:Large_pool_size
Wal_bu
ff
ers Redolog bu
ff
er
pg_setting v$parameter
Set session... Alter session set...
Background Writer DB Writer
Wal writer Log writer
Data store in Pages Data store in Blocks
Tuples Rows
Postgres Sys
Analyze Gather stats
Explain with Analyze Explain for...
5432 default port 1521