IvorySQL

Use HighGo’s open-source IvorySQL kernel to achieve Oracle syntax/PLSQL compatibility based on PostgreSQL clusters.

IvorySQL is an open-source PostgreSQL kernel fork that aims to provide “Oracle compatibility” based on PG.

Overview

The Pigsty PGSQL repository directly provides IvorySQL 5.4 packages compatible with PostgreSQL 18.4 across the currently supported EL, Debian, Ubuntu, and dual-architecture platforms. Online installation uses Pigsty’s pgsql repository; the Professional Edition also provides offline delivery for the corresponding platforms.

Pigsty’s ivorysql package alias points to IvorySQL 5, compatible with PostgreSQL 18. Real package names are mapped by platform variables under roles/node_id/vars/; for example, EL uses ivorysql5, while Debian/Ubuntu uses ivorysql-5.

The last IvorySQL version supporting EL7 was 3.3, corresponding to PostgreSQL 16.3; the last version based on PostgreSQL 17 is IvorySQL 4.4

Installation

Install with Pigsty’s built-in ivory configuration template:

./configure -c ivory
./deploy.yml

Configuration

The following parameters need to be configured for IvorySQL database clusters:

#----------------------------------#
# Ivory SQL Configuration
#----------------------------------#
node_repo_modules: node,infra,pgsql       # use Pigsty node/infra/pgsql repos
pg_mode: ivory                    # IvorySQL Oracle Compatible Mode
pg_packages: [ ivorysql, pgsql-common ]
pg_libs: 'liboracle_parser, pg_stat_statements, auto_explain'
pg_extensions: [ ]                # do not install any vanilla postgresql extensions

When using Oracle compatibility mode, you need to dynamically load the liboracle_parser extension plugin.

Client Access

IvorySQL 5 is equivalent to PostgreSQL 18, and any client tool compatible with the PostgreSQL wire protocol can access IvorySQL clusters.

Available Extensions

The IvorySQL kernel has 95 available extensions. After removing bundled PG Contrib extensions, the following extra extensions remain:

Extension	Version	Description
address_standardizer	`3.5.4`	Used to parse an address into constituent elements. Generally used to support geocoding address normalization step.
address_standardizer_data_us	`3.5.4`	Address Standardizer US dataset example
age	`1.7.0`	AGE database extension
ddlx	`0.31`	DDL eXtractor functions
gb18030_2022	`1.0`	support gb18030 2022 with extension
http	`1.7`	HTTP client for PostgreSQL, allows web page retrieval inside the database.
ivorysql_ora	`1.0`	Oracle Compatible extenison on Postgres Database
ora_btree_gin	`1.0`	support for indexing oracle datatypes in GIN
ora_btree_gist	`1.0`	support for oracle indexing common datatypes in GiST
pg_bigm	`1.2`	text similarity measurement and index searching based on bigrams
pg_cron	`1.6`	Job scheduler for PostgreSQL
pg_curl	`2.4`	PostgreSQL cURL allows most curl actions, including data transfer with URL syntax via HTTP, HTTPS, FTP, FTPS, GOPHER, TFTP, SCP, SFTP, SMB, TELNET, DICT, LDAP, LDAPS, FILE, IMAP, SMTP, POP3, RTSP and RTMP
pg_get_functiondef	`1.0`	Get function’s definition
pg_hint_plan	`1.8.0`	optimizer hints for PostgreSQL
pg_jieba	`1.1.1`	a parser for full-text search of Chinese
pg_partman	`5.3.1`	Extension to manage partitioned tables by time or ID
pg_show_plans	`2.1`	show query plans of all currently running SQL statements
pg_stat_monitor	`2.3`	The pg_stat_monitor is a PostgreSQL Query Performance Monitoring tool, based on PostgreSQL contrib module pg_stat_statements. pg_stat_monitor provides aggregated statistics, client information, plan details including plan, and histogram information.
pg_textsearch	`0.1.0`	Full-text search with BM25 ranking
pgagent	`4.2`	A PostgreSQL job scheduler
pgaudit	`18.0`	provides auditing functionality
pgroonga	`4.0.4`	Super fast and all languages supported full text search index based on Groonga
pgroonga_database	`4.0.4`	PGroonga database management module
pgrouting	`3.8.0`	pgRouting Extension
plisql	`1.0`	PL/iSQL procedural language
plpgsql_check	`2.8`	extended check for plpgsql functions
postgis	`3.5.4`	PostGIS geometry and geography spatial types and functions
postgis_raster	`3.5.4`	PostGIS raster types and functions
postgis_sfcgal	`3.5.4`	PostGIS SFCGAL functions
postgis_tiger_geocoder	`3.5.4`	PostGIS tiger geocoder and reverse geocoder
postgis_topology	`3.5.4`	PostGIS topology spatial types and functions
redis_fdw	`1.0`	Foreign data wrapper for querying a Redis server
system_stats	`3.0`	EnterpriseDB system statistics for PostgreSQL
vector	`0.8.1`	vector data type and ivfflat and hnsw access methods
zhparser	`2.3`	a parser for full-text search of Chinese

Please note that Pigsty does not assume any warranty responsibility for using the IvorySQL kernel. Any issues or requirements encountered when using this kernel should be addressed with the original vendor.