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PostgreSQL Oracle Vs Postgresql

I.Oracle Tools equivalence to postgresql :-
1.SQLPLUS : PSQL but much more
2.TOAD / Oracle SQL Developper : TORA or pgAdmin
3.EXPLAIN PLAN : EXPLAIN ANALYZE
4.ANALYZE TABLE : ANALYZE
5.Cold backup : both are file system backup
6.Hot backup : REDOLOGS = ARCHIVELOGS
7.Logical Export : exp = pg_dump
8.Logical Import : imp = pg_restore or psql
9.SQL Loader : pgLoader 
10.RMAN : Barman or Pitrery 
11.AUDIT TRAIL : pgAudit 
12.Pooling / Dispatcher :
          – PgBouncer 
          – PgPool 
13.Active Data Guard :
          – PostgreSQL master / slave replication
          – Slony 
14.Replication master / master :
          – PostgreSQL-XC 
          – Bucardo 
15.Logical replication :
          – PostgreSQL 9.5 / 10 
          – Slony
16.RAC Horizontal scaling : PostgreSQL-XC – PostgreSQL-XL -  plProxy, pg_shard
17.Oracle => Postgres Plus Advanced Server
          – Same as PostgreSQL but with proprietary code and database feature compatibility for Oracle.
          – Compatible with applications written for Oracle.
          – No need to rewrite PL/SQL into PLPGSQL
          – Applications written for Oracle run on Postgres Plus Advanced Server without modification.


II.Postgres Monitoring / Audit tools:-
1.PgBadger: A fast PostgreSQL log analyzer

2.PgCluu: PostgreSQL and system performances monitoring and auditing tool

3.Powa: PostgreSQL Workload Analyzer. Gathers performance stats and provides real-time charts and graphs to help monitor and tune your PostgreSQL servers. Similar to Oracle AWR.

4.PgObserver: monitor performance metrics of different PostgreSQL clusters.

5.OPM: Open PostgreSQL Monitoring. Gather stats, display dashboards and send warnings when something goes wrong. Tend to be similar to Oracle Grid Control.

6.check_postgres: script for monitoring various attributes of your database. It is designed to work with Nagios, MRTG, or in standalone scripts.

7.Pgwatch: monitor PostgreSQL databases and provides a fast and efficient overview of what is really going on.

8.pgAgent:pgAgent is a job scheduler for PostgreSQL which may be managed using pgAdmin. Prior to pgAdmin v1.9, pgAgent shipped as part of pgAdmin. From pgAdmin v1.9 onwards, pgAgent is shipped as a separate application.

9.pgbouncer:PgBouncer is a lightweight connection pooler for PostgreSQL.It contains the connection pooler and it is used to establish connection between application and database

III.oracle vs postgres data types comparison
1.VARCHAR2 :  VARCHAR or TEXT
2.CLOB, LONG :  VARCHAR or TEXT
3.NCHAR, NVARCHAR2, NCLOB : VARCHAR or TEXT
4.NUMBER : NUMERIC or BIGINT or INT or SMALLINT or DOUBLE PRECISION or REAL (bug potential)
5.BINRAY FLOAT/BINARY DOUBLE : REAL/DOUBLE PRECISION
6.BLOB, RAW, LONG RAW : BYTEA (additional porting required)
7.DATE : DATE or TIMESTAMP




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