Here the latest version and first working release of Ora2Pg a tool to export

Oracle database to PostgreSQL.

    It currently dump the database schema (tables, views, sequences,
    indexes, grants), with primary, unique and foreign keys into PostgreSQL
    syntax without editing the SQL code generated. You can dump only a
    particular schema from the Oracle database.

    Functions, procedures and triggers with SQL or PLSQL code generated must
    be reviewed to match the PostgreSQL syntax. Some usefull recommandation
    on porting Oracle to PostgreSQL can be found at
http://techdocs.postgresql.org/
    under the "Converting from other Databases to PostgreSQL" Oracle part. I
just
    notice one thing more is that the trunc() function in Oracle is the same for
number
    or date so be carefull when porting to PostgreSQL to use trunc() for number
and
    date_trunc() for date.

I will add more precision in type NUMBER conversion based on length to match
as closest as possible all rich PostgreSQL numerics type. But it seems not to be

urgent as it seems that Oracle DBAs only create number with length 22 (default)
Space seems not to be their problem...

Gilles DAROLD

1 files changed, 188 insertions, 96 deletions

diff --git a/contrib/oracle/README.ora2pg b/contrib/oracle/README.ora2pg
index 28be8e09176..159ac038b19 100644
--- a/contrib/oracle/README.ora2pg
+++ b/contrib/oracle/README.ora2pg
@@ -35,7 +35,9 @@ SYNOPSIS
                     datasource => $dbsrc,           # Database DBD datasource
                     user => $dbuser,                # Database user
                     password => $dbpwd,             # Database password
-                    tables => \@tables,             # Tables to extract
+                    tables => \@tables,
+            or                                      # Tables to extract
+                    tables => [('tab1','tab2')],
                     debug => 1                      # To show somethings when running
             );
 
@@ -56,12 +58,17 @@ SYNOPSIS
                     datasource => $dbsrc,           # Database DBD datasource
                     user => $dbuser,                # Database user
                     password => $dbpwd,             # Database password
-                    min => 10                       # Begin extraction at indice 10
+                    min => 10,                      # Begin extraction at indice 10
                     max => 20                       # End extraction at indice 20
             );
 
-    To know at which indices table can be found during extraction use the
-    option:
+    To choose a particular schema just set the following option to
+    your schema name :
+
+            schema => 'APPS'
+
+    To know at which indices table can be found during extraction
+    use the option:
 
             showtableid => 1
 
@@ -69,43 +76,77 @@ SYNOPSIS
 
             type => 'VIEW'
 
+    To extract all grants set the option type as follow:
+
+            type => 'GRANT'
+
+    To extract all sequences set the option type as follow:
+
+            type => 'SEQUENCE'
+
+    To extract all triggers set the option type as follow:
+
+            type => 'TRIGGER'
+
+    To extract all functions set the option type as follow:
+
+            type => 'FUNCTION'
+
+    To extract all procedures set the option type as follow:
+
+            type => 'PROCEDURE'
+
     Default is table schema extraction
 
+            type => 'TABLE'
+
 DESCRIPTION
-    Ora2Pg is a perl OO module used to export an Oracle database schema to a
-    PostgreSQL compatible schema.
+    Ora2Pg is a perl OO module used to export an Oracle database
+    schema to a PostgreSQL compatible schema.
 
-    It simply connect to your Oracle database, extract its structure and
-    generate a SQL script that you can load into your PostgreSQL database.
+    It simply connect to your Oracle database, extract its structure
+    and generate a SQL script that you can load into your PostgreSQL
+    database.
+
+    I'm not a Oracle DBA so I don't really know something about its
+    internal structure so you may find some incorrect things. Please
+    tell me what is wrong and what can be better.
 
-    I'm not a Oracle DBA so I don't really know something about its internal
-    structure so you may find some incorrect things. Please tell me what is
-    wrong and what can be better.
+    It currently dump the database schema (tables, views, sequences,
+    indexes, grants), with primary, unique and foreign keys into
+    PostgreSQL syntax without editing the SQL code generated.
 
-    It currently only dump the database schema, with primary, unique and
-    foreign keys. I've tried to excluded internal system tables but perhaps
-    not enougt, please let me know.
+    Functions, procedures and triggers PL/SQL code generated must be
+    reviewed to match the PostgreSQL syntax. Some usefull
+    recommandation on porting Oracle to PostgreSQL can be found at
+    http://techdocs.postgresql.org/ under the "Converting from other
+    Databases to PostgreSQL" Oracle part. I just notice one thing
+    more is that the trunc() function in Oracle is the same for
+    number or date so be carefull when porting to PostgreSQL to use
+    trunc() for number and date_trunc() for date.
 
 ABSTRACT
-    The goal of the Ora2Pg perl module is to cover all part needed to export
-    an Oracle database to a PostgreSQL database without other thing that
-    provide the connection parameters to the Oracle database.
+    The goal of the Ora2Pg perl module is to cover all part needed
+    to export an Oracle database to a PostgreSQL database without
+    other thing that provide the connection parameters to the Oracle
+    database.
 
     Features must include:
 
-            - Database schema export, with unique, primary and foreign key.
+            - Database schema export (tables, views, sequences, indexes),
+              with unique, primary and foreign key.
             - Grants/privileges export by user and group.
-            - Indexes and unique indexes export.
-            - Table or view selection (by name and max table) export.
-            - Predefined function/trigger export (todo)
-            - Data export (todo)
+            - Table selection (by name and max table) export.
+            - Predefined functions/triggers/procedures export.
             - Sql query converter (todo)
+            - Data export (todo)
 
-    My knowledge regarding database is really poor especially for Oracle so
-    contribution is welcome.
+    My knowledge regarding database is really poor especially for
+    Oracle so contribution is welcome.
 
 REQUIREMENT
-    You just need the DBI and DBD::Oracle perl module to be installed
+    You just need the DBI and DBD::Oracle perl module to be
+    installed
 
 PUBLIC METHODS
   new HASH_OPTIONS
@@ -117,7 +158,8 @@ PUBLIC METHODS
             - datasource    : DBD datasource (required)
             - user          : DBD user (optional with public access)
             - password      : DBD password (optional with public access)
-            - type          : Type of data to extract, can be TABLE (default) or VIEW
+            - schema        : Oracle internal schema to extract
+            - type          : Type of data to extract, can be TABLE,VIEW,GRANT,SEQUENCE,TRIGGER,FUNCTION,PROCEDURE
             - debug         : Print the current state of the parsing
             - tables        : Extract only the given tables (arrayref)
             - showtableid   : Display only the table indice during extraction
@@ -129,153 +171,202 @@ PUBLIC METHODS
 
   export_sql FILENAME
 
-    Print SQL conversion output to a filename or to STDOUT if no file is
-    given.
+    Print SQL conversion output to a filename or to STDOUT if no
+    file is given.
 
-PUBLIC METHODS
+PRIVATE METHODS
   _init HASH_OPTIONS
 
-    Initialize a Ora2Pg object instance with a connexion to the Oracle
-    database.
+    Initialize a Ora2Pg object instance with a connexion to the
+    Oracle database.
+
+  _grants
+
+    This function is used to retrieve all privilege information.
+
+    It extract all Oracle's ROLES to convert them as Postgres groups
+    and search all users associated to these roles.
+
+    Set the main hash $self->{groups}. Set the main hash $self-
+    >{grantss}.
+
+  _sequences
+
+    This function is used to retrieve all sequences information.
+
+    Set the main hash $self->{sequences}.
+
+  _triggers
+
+    This function is used to retrieve all triggers information.
+
+    Set the main hash $self->{triggers}.
+
+  _functions
+
+    This function is used to retrieve all functions information.
+
+    Set the main hash $self->{functions}.
 
   _tables
 
     This function is used to retrieve all table information.
 
-    Set the main hash of the database structure $self->{tables}. Keys are
-    the names of all tables retrieved from the current database. Each table
-    information compose an array associated to the table_info key as array
-    reference. In other way:
+    Set the main hash of the database structure $self->{tables}.
+    Keys are the names of all tables retrieved from the current
+    database. Each table information compose an array associated to
+    the table_info key as array reference. In other way:
 
         $self->{tables}{$class_name}{table_info} = [(OWNER,TYPE)];
 
-    DBI TYPE can be TABLE, VIEW, SYSTEM TABLE, GLOBAL TEMPORARY, LOCAL
-    TEMPORARY, ALIAS, SYNONYM or a data source specific type identifier.
-    This only extract TABLE type.
+    DBI TYPE can be TABLE, VIEW, SYSTEM TABLE, GLOBAL TEMPORARY,
+    LOCAL TEMPORARY, ALIAS, SYNONYM or a data source specific type
+    identifier. This only extract TABLE type.
 
-    It also get the following informations in the DBI object to affect the
-    main hash of the database structure :
+    It also get the following informations in the DBI object to
+    affect the main hash of the database structure :
 
         $self->{tables}{$class_name}{field_name} = $sth->{NAME};
         $self->{tables}{$class_name}{field_type} = $sth->{TYPE};
 
-    It also call these other private subroutine to affect the main hash of
-    the database structure :
+    It also call these other private subroutine to affect the main
+    hash of the database structure :
 
-        @{$self->{tables}{$class_name}{column_info}} = &_column_info($self, $class_name);
-        @{$self->{tables}{$class_name}{primary_key}} = &_primary_key($self, $class_name);
-        @{$self->{tables}{$class_name}{unique_key}}  = &_unique_key($self, $class_name);
-        @{$self->{tables}{$class_name}{foreign_key}} = &_foreign_key($self, $class_name);
+        @{$self->{tables}{$class_name}{column_info}} = $self->_column_info($class_name);
+        @{$self->{tables}{$class_name}{primary_key}} = $self->_primary_key($class_name);
+        @{$self->{tables}{$class_name}{unique_key}}  = $self->_unique_key($class_name);
+        @{$self->{tables}{$class_name}{foreign_key}} = $self->_foreign_key($class_name);
 
   _views
 
     This function is used to retrieve all views information.
 
-    Set the main hash of the views definition $self->{views}. Keys are the
-    names of all views retrieved from the current database values are the
-    text definition of the views.
+    Set the main hash of the views definition $self->{views}. Keys
+    are the names of all views retrieved from the current database
+    values are the text definition of the views.
 
     It then set the main hash as follow:
 
         # Definition of the view
         $self->{views}{$table}{text} = $view_infos{$table};
-        # Grants defined on the views 
-        $self->{views}{$table}{grants} = when I find how...
 
   _get_sql_data
 
-    Returns a string containing the entire SQL Schema definition compatible
-    with PostgreSQL
+    Returns a string containing the entire SQL Schema definition
+    compatible with PostgreSQL
 
   _sql_type INTERNAL_TYPE LENGTH
 
-    This function return the PostgreSQL datatype corresponding to the Oracle
-    internal type.
+    This function return the PostgreSQL datatype corresponding to
+    the Oracle internal type.
 
   _column_info TABLE
 
     This function implements a Oracle-native column information.
 
-    Return a list of array reference containing the following informations
-    for each column the given a table
+    Return a list of array reference containing the following
+    informations for each column the given a table
 
-    [( column name, column type, column length, nullable column, default
-    value )]
+    [( column name, column type, column length, nullable column,
+    default value )]
 
   _primary_key TABLE
 
-    This function implements a Oracle-native primary key column information.
+    This function implements a Oracle-native primary key column
+    information.
 
-    Return a list of all column name defined as primary key for the given
-    table.
+    Return a list of all column name defined as primary key for the
+    given table.
 
   _unique_key TABLE
 
-    This function implements a Oracle-native unique key column information.
+    This function implements a Oracle-native unique key column
+    information.
 
-    Return a list of all column name defined as unique key for the given
-    table.
+    Return a list of all column name defined as unique key for the
+    given table.
 
   _foreign_key TABLE
 
     This function implements a Oracle-native foreign key reference
     information.
 
-    Return a list of hash of hash of array reference. Ouuf! Nothing very
-    difficult. The first hash is composed of all foreign key name. The
-    second hash just have two key known as 'local' and remote' corresponding
-    to the local table where the foreign key is defined and the remote table
-    where the key refer.
+    Return a list of hash of hash of array reference. Ouuf! Nothing
+    very difficult. The first hash is composed of all foreign key
+    name. The second hash just have two key known as 'local' and
+    remote' corresponding to the local table where the foreign key
+    is defined and the remote table where the key refer.
 
     The foreign key name is composed as follow:
 
         'local_table_name->remote_table_name'
 
-    Foreign key data consist in two array representing at the same indice
-    the local field and the remote field where the first one refer to the
-    second. Just like this:
+    Foreign key data consist in two array representing at the same
+    indice the local field and the remote field where the first one
+    refer to the second. Just like this:
 
         @{$link{$fkey_name}{local}} = @local_columns;
         @{$link{$fkey_name}{remote}} = @remote_columns;
 
-  _get_table_privilege TABLE
+  _get_users
 
-    This function implements a Oracle-native table grants information.
+    This function implements a Oracle-native users information.
 
-    Return a hash of array of all users and their grants on the given table.
+    Return a hash of all users as an array.
 
   _get_roles
 
-    This function implements a Oracle-native roles/users information.
+    This function implements a Oracle-native roles information.
+
+    Return a hash of all groups (roles) as an array of associated
+    users.
+
+  _get_all_grants
 
-    Return a hash of all groups (roles) as an array of associated users.
+    This function implements a Oracle-native user privilege
+    information.
+
+    Return a hash of all tables grants as an array of associated
+    users.
 
   _get_indexes TABLE
 
     This function implements a Oracle-native indexes information.
 
-    Return an array of all indexes name which are not primary keys for the
+    Return hash of array containing all unique index and a hash of
+    array of all indexes name which are not primary keys for the
     given table.
 
-    Note: Indexes name must be created like this tablename_fieldname else
-    they will not be retrieved or if tablename false in the output
-    fieldname.
-
-  _get_sequences TABLE
-
-    This function implements a Oracle-native sequence information.
+  _get_sequences
 
-    Return a hash of array of sequence name with MIN_VALUE, MAX_VALUE,
-    INCREMENT and LAST_NUMBER for the given table.
+    This function implements a Oracle-native sequences information.
 
-    Not working yet.
+    Return a hash of array of sequence name with MIN_VALUE,
+    MAX_VALUE, INCREMENT and LAST_NUMBER for the given table.
 
   _get_views
 
     This function implements a Oracle-native views information.
 
-    Return a hash of array of sequence name with MIN_VALUE, MAX_VALUE,
-    INCREMENT and LAST_NUMBER for the given table.
+    Return a hash of view name with the SQL query it is based on.
+
+  _get_triggers
+
+    This function implements a Oracle-native triggers information.
+
+    Return an array of refarray of all triggers informations
+
+  _get_functions
+
+    This function implements a Oracle-native functions information.
+
+    Return a hash of all function name with their PLSQL code
+
+  _table_info
+
+    This function retrieve all Oracle-native tables information.
+
+    Return a handle to a DB query statement
 
 AUTHOR
     Gilles Darold <gilles@darold.net>
@@ -283,14 +374,15 @@ AUTHOR
 COPYRIGHT
     Copyright (c) 2001 Gilles Darold - All rights reserved.
 
-    This program is free software; you can redistribute it and/or modify it
-    under the same terms as Perl itself.
+    This program is free software; you can redistribute it and/or
+    modify it under the same terms as Perl itself.
 
 BUGS
     This perl module is in the same state as my knowledge regarding
-    database, it can move and not be compatible with older version so I will
-    do my best to give you official support for Ora2Pg. Your volontee to
-    help construct it and your contribution are welcome.
+    database, it can move and not be compatible with older version
+    so I will do my best to give you official support for Ora2Pg.
+    Your volontee to help construct it and your contribution are
+    welcome.
 
 SEE ALSO
     the DBI manpage, the DBD::Oracle manpage