diff options
Diffstat (limited to 'contrib/oracle/ora2pg.html')
| -rw-r--r-- | contrib/oracle/ora2pg.html | 480 |
1 files changed, 0 insertions, 480 deletions
diff --git a/contrib/oracle/ora2pg.html b/contrib/oracle/ora2pg.html deleted file mode 100644 index 544ddcfae54..00000000000 --- a/contrib/oracle/ora2pg.html +++ /dev/null @@ -1,480 +0,0 @@ -<HTML> -<HEAD> -<TITLE>Ora2Pg - Oracle to PostgreSQL database schema converter</TITLE> -<LINK REV="made" HREF="mailto:darold@localhost.localdomain"> -</HEAD> - -<BODY> - -<A NAME="__index__"></A> -<!-- INDEX BEGIN --> - -<UL> - - <LI><A HREF="#name">NAME</A></LI> - <LI><A HREF="#synopsis">SYNOPSIS</A></LI> - <LI><A HREF="#description">DESCRIPTION</A></LI> - <LI><A HREF="#abstract">ABSTRACT</A></LI> - <LI><A HREF="#requirement">REQUIREMENT</A></LI> - <LI><A HREF="#public methods">PUBLIC METHODS</A></LI> - <UL> - - <LI><A HREF="#new hash_options">new HASH_OPTIONS</A></LI> - <LI><A HREF="#export_data filename">export_data FILENAME</A></LI> - <LI><A HREF="#export_sql filename">export_sql FILENAME</A></LI> - <LI><A HREF="#send_to_pgdb dest_datasrc dest_user dest_passwd">send_to_pgdb DEST_DATASRC DEST_USER DEST_PASSWD</A></LI> - <LI><A HREF="#modify_struct table_name arrayof_fieldname">modify_struct TABLE_NAME ARRAYOF_FIELDNAME</A></LI> - </UL> - - <LI><A HREF="#private methods">PRIVATE METHODS</A></LI> - <UL> - - <LI><A HREF="#_init hash_options">_init HASH_OPTIONS</A></LI> - <LI><A HREF="#_grants">_grants</A></LI> - <LI><A HREF="#_sequences">_sequences</A></LI> - <LI><A HREF="#_triggers">_triggers</A></LI> - <LI><A HREF="#_functions">_functions</A></LI> - <LI><A HREF="#_packages">_packages</A></LI> - <LI><A HREF="#_tables">_tables</A></LI> - <LI><A HREF="#_views">_views</A></LI> - <LI><A HREF="#_get_sql_data">_get_sql_data</A></LI> - <LI><A HREF="#_get_data table">_get_data TABLE</A></LI> - <LI><A HREF="#_sql_type internal_type length precision scale">_sql_type INTERNAL_TYPE LENGTH PRECISION SCALE</A></LI> - <LI><A HREF="#_column_info table">_column_info TABLE</A></LI> - <LI><A HREF="#_primary_key table">_primary_key TABLE</A></LI> - <LI><A HREF="#_unique_key table">_unique_key TABLE</A></LI> - <LI><A HREF="#_foreign_key table">_foreign_key TABLE</A></LI> - <LI><A HREF="#_get_users">_get_users</A></LI> - <LI><A HREF="#_get_roles">_get_roles</A></LI> - <LI><A HREF="#_get_all_grants">_get_all_grants</A></LI> - <LI><A HREF="#_get_indexes table">_get_indexes TABLE</A></LI> - <LI><A HREF="#_get_sequences">_get_sequences</A></LI> - <LI><A HREF="#_get_views">_get_views</A></LI> - <LI><A HREF="#_alias_info">_alias_info</A></LI> - <LI><A HREF="#_get_triggers">_get_triggers</A></LI> - <LI><A HREF="#_get_functions">_get_functions</A></LI> - <LI><A HREF="#_get_packages">_get_packages</A></LI> - <LI><A HREF="#_table_info">_table_info</A></LI> - </UL> - - <LI><A HREF="#author">AUTHOR</A></LI> - <LI><A HREF="#copyright">COPYRIGHT</A></LI> - <LI><A HREF="#bugs">BUGS</A></LI> - <LI><A HREF="#see also">SEE ALSO</A></LI> - <LI><A HREF="#acknowledgements">ACKNOWLEDGEMENTS</A></LI> -</UL> -<!-- INDEX END --> - -<HR> -<P> -<H1><A NAME="name">NAME</A></H1> -<P>Ora2Pg - Oracle to PostgreSQL database schema converter</P> -<P> -<HR> -<H1><A NAME="synopsis">SYNOPSIS</A></H1> -<PRE> - BEGIN { - $ENV{ORACLE_HOME} = '/usr/local/oracle/oracle816'; - }</PRE> -<PRE> - use strict;</PRE> -<PRE> - use Ora2Pg;</PRE> -<PRE> - # Init the database connection - my $dbsrc = 'dbi:Oracle:host=testdb.samse.fr;sid=TEST;port=1521'; - my $dbuser = 'system'; - my $dbpwd = 'manager';</PRE> -<PRE> - # Create an instance of the Ora2Pg perl module - my $schema = new Ora2Pg ( - datasource => $dbsrc, # Database DBD datasource - user => $dbuser, # Database user - password => $dbpwd, # Database password - { - PrintError => 0, - RaiseError => 1, - AutoCommit => 0 - } - );</PRE> -<PRE> - # Create the POSTGRESQL representation of all objects in the database - $schema->export_schema("output.sql");</PRE> -<PRE> - exit(0);</PRE> -<P>or if you only want to extract some tables:</P> -<PRE> - # Create an instance of the Ora2Pg perl module - my @tables = ('tab1', 'tab2', 'tab3'); - my $schema = new Ora2Pg ( - datasource => $dbsrc, # Database DBD datasource - user => $dbuser, # Database user - password => $dbpwd, # Database password - tables => \@tables, - or # Tables to extract - tables => [('tab1','tab2')], - debug => 1 # To show somethings when running - );</PRE> -<P>or if you only want to extract the 10 first tables:</P> -<PRE> - # Create an instance of the Ora2Pg perl module - my $schema = new Ora2Pg ( - datasource => $dbsrc, # Database DBD datasource - user => $dbuser, # Database user - password => $dbpwd, # Database password - max => 10 # 10 first tables to extract - );</PRE> -<P>or if you only want to extract tables 10 to 20:</P> -<PRE> - # Create an instance of the Ora2Pg perl module - my $schema = new Ora2Pg ( - datasource => $dbsrc, # Database DBD datasource - user => $dbuser, # Database user - password => $dbpwd, # Database password - min => 10, # Begin extraction at indice 10 - max => 20 # End extraction at indice 20 - );</PRE> -<P>To choose a particular Oracle schema to export just set the following option -to your schema name:</P> -<PRE> - schema => 'APPS'</PRE> -<P>This schema definition can also be needed when you want to export data. If export -failed and complain that the table doesn't exists use this to prefix the table name -by the schema name.</P> -<P>To know at which indices tables can be found during extraction use the option:</P> -<PRE> - showtableid => 1</PRE> -<P>To extract all views set the type option as follow:</P> -<PRE> - type => 'VIEW'</PRE> -<P>To extract all grants set the type option as follow:</P> -<PRE> - type => 'GRANT'</PRE> -<P>To extract all sequences set the type option as follow:</P> -<PRE> - type => 'SEQUENCE'</PRE> -<P>To extract all triggers set the type option as follow:</P> -<PRE> - type => 'TRIGGER'</PRE> -<P>To extract all functions set the type option as follow:</P> -<PRE> - type => 'FUNCTION'</PRE> -<P>To extract all procedures set the type option as follow:</P> -<PRE> - type => 'PROCEDURE'</PRE> -<P>To extract all packages and body set the type option as follow:</P> -<PRE> - type => 'PACKAGE'</PRE> -<P>Default is table extraction</P> -<PRE> - type => 'TABLE'</PRE> -<P>To extract all data from table extraction as INSERT statement use:</P> -<PRE> - type => 'DATA'</PRE> -<P>To extract all data from table extraction as COPY statement use:</P> -<PRE> - type => 'COPY'</PRE> -<P>and data_limit => n to specify the max tuples to return. If you set -this options to 0 or nothing, no limitation are used. Additional option -'table', 'min' and 'max' can also be used.</P> -<P>When use of COPY or DATA you can export data by calling method:</P> -<P>$schema->export_data(``output.sql'');</P> -<P>Data are dumped to the given filename or to STDOUT with no argument. -You can also send these data directly to a PostgreSQL backend using - the following method:</P> -<P>$schema->send_to_pgdb($destdatasrc,$destuser,$destpasswd);</P> -<P>In this case you must call <CODE>export_data()</CODE> without argument after the -call to method send_to_pgdb().</P> -<P>If you set type to COPY and you want to dump data directly to a PG database, -you must call method send_to_pgdb but data will not be sent via DBD::Pg but -they will be load to the database using the psql command. Calling this method -is istill required to be able to extract database name, hostname and port -information. Edit the $PSQL variable to match the path of your psql -command (nothing to edit if psql is in your path).</P> -<P> -<HR> -<H1><A NAME="description">DESCRIPTION</A></H1> -<P>Ora2Pg is a perl OO module used to export an Oracle database schema -to a PostgreSQL compatible schema.</P> -<P>It simply connect to your Oracle database, extract its structure and -generate a SQL script that you can load into your PostgreSQL database.</P> -<P>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.</P> -<P>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.</P> -<P>It now can dump Oracle data into PostgreSQL DB as online process. You can choose -what columns can be exported for each table.</P> -<P>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 <A HREF="http://techdocs.postgresql.org/">http://techdocs.postgresql.org/</A> under the ``Converting from other -Databases to PostgreSQL'' Oracle part. I just notice one thing more is that the -<CODE>trunc()</CODE> function in Oracle is the same for number or date so be carefull when -porting to PostgreSQL to use <CODE>trunc()</CODE> for number and <CODE>date_trunc()</CODE> for date.</P> -<P> -<HR> -<H1><A NAME="abstract">ABSTRACT</A></H1> -<P>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.</P> -<P>Features must include:</P> -<PRE> - - Database schema export (tables, views, sequences, indexes), - with unique, primary and foreign key. - - Grants/privileges export by user and group. - - Table selection (by name and max table) export. - - Predefined functions/triggers/procedures/packages export. - - Data export. - - Sql query converter (todo)</PRE> -<P>My knowledge regarding database is really poor especially for Oracle -so contribution is welcome.</P> -<P> -<HR> -<H1><A NAME="requirement">REQUIREMENT</A></H1> -<P>You just need the DBI, DBD::Pg and DBD::Oracle perl module to be installed</P> -<P> -<HR> -<H1><A NAME="public methods">PUBLIC METHODS</A></H1> -<P> -<H2><A NAME="new hash_options">new HASH_OPTIONS</A></H2> -<P>Creates a new Ora2Pg object.</P> -<P>Supported options are:</P> -<PRE> - - datasource : DBD datasource (required) - - user : DBD user (optional with public access) - - password : DBD password (optional with public access) - - schema : Oracle internal schema to extract - - type : Type of data to extract, can be TABLE,VIEW,GRANT,SEQUENCE, - TRIGGER,FUNCTION,PROCEDURE,DATA,COPY,PACKAGE - - debug : Print the current state of the parsing - - tables : Extract only the given tables (arrayref) - - showtableid : Display only the table indice during extraction - - min : Indice to begin extraction. Default to 0 - - max : Indice to end extraction. Default to 0 mean no limits - - data_limit : Number max of tuples to return during data extraction (default 10)</PRE> -<P>Attempt that this list should grow a little more because all initialization is -done by this way.</P> -<P> -<H2><A NAME="export_data filename">export_data FILENAME</A></H2> -<P>Print SQL data output to a filename or -to STDOUT if no file is given.</P> -<P>Must be used only if type option is set to DATA or COPY -=cut</P> -<P>sub export_data -{ - my ($self, $outfile) = @_;</P> -<PRE> - $self->_get_sql_data($outfile); -}</PRE> -<P> -<H2><A NAME="export_sql filename">export_sql FILENAME</A></H2> -<P>Print SQL conversion output to a filename or -simply return these data if no file is given.</P> -<P> -<H2><A NAME="send_to_pgdb dest_datasrc dest_user dest_passwd">send_to_pgdb DEST_DATASRC DEST_USER DEST_PASSWD</A></H2> -<P>Open a DB handle to a PostgreSQL database</P> -<P> -<H2><A NAME="modify_struct table_name arrayof_fieldname">modify_struct TABLE_NAME ARRAYOF_FIELDNAME</A></H2> -<P>Modify a table structure during export. Only given fieldname -will be exported.</P> -<P> -<HR> -<H1><A NAME="private methods">PRIVATE METHODS</A></H1> -<P> -<H2><A NAME="_init hash_options">_init HASH_OPTIONS</A></H2> -<P>Initialize a Ora2Pg object instance with a connexion to the -Oracle database.</P> -<P> -<H2><A NAME="_grants">_grants</A></H2> -<P>This function is used to retrieve all privilege information.</P> -<P>It extract all Oracle's ROLES to convert them as Postgres groups -and search all users associated to these roles.</P> -<P>Set the main hash $self->{groups}. -Set the main hash $self->{grantss}.</P> -<P> -<H2><A NAME="_sequences">_sequences</A></H2> -<P>This function is used to retrieve all sequences information.</P> -<P>Set the main hash $self->{sequences}.</P> -<P> -<H2><A NAME="_triggers">_triggers</A></H2> -<P>This function is used to retrieve all triggers information.</P> -<P>Set the main hash $self->{triggers}.</P> -<P> -<H2><A NAME="_functions">_functions</A></H2> -<P>This function is used to retrieve all functions information.</P> -<P>Set the main hash $self->{functions}.</P> -<P> -<H2><A NAME="_packages">_packages</A></H2> -<P>This function is used to retrieve all packages information.</P> -<P>Set the main hash $self->{packages}.</P> -<P> -<H2><A NAME="_tables">_tables</A></H2> -<P>This function is used to retrieve all table information.</P> -<P>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:</P> -<PRE> - $self->{tables}{$class_name}{table_info} = [(OWNER,TYPE)];</PRE> -<P>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.</P> -<P>It also get the following informations in the DBI object to affect the -main hash of the database structure :</P> -<PRE> - $self->{tables}{$class_name}{field_name} = $sth->{NAME}; - $self->{tables}{$class_name}{field_type} = $sth->{TYPE};</PRE> -<P>It also call these other private subroutine to affect the main hash -of the database structure :</P> -<PRE> - @{$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);</PRE> -<P> -<H2><A NAME="_views">_views</A></H2> -<P>This function is used to retrieve all views information.</P> -<P>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.</P> -<P>It then set the main hash as follow:</P> -<PRE> - # Definition of the view - $self->{views}{$table}{text} = $view_infos{$table};</PRE> -<P> -<H2><A NAME="_get_sql_data">_get_sql_data</A></H2> -<P>Returns a string containing the entire SQL Schema definition compatible with PostgreSQL</P> -<P> -<H2><A NAME="_get_data table">_get_data TABLE</A></H2> -<P>This function implements a Oracle-native data extraction.</P> -<P>Return a list of array reference containing the data</P> -<P> -<H2><A NAME="_sql_type internal_type length precision scale">_sql_type INTERNAL_TYPE LENGTH PRECISION SCALE</A></H2> -<P>This function return the PostgreSQL datatype corresponding to the -Oracle internal type.</P> -<P> -<H2><A NAME="_column_info table">_column_info TABLE</A></H2> -<P>This function implements a Oracle-native column information.</P> -<P>Return a list of array reference containing the following informations -for each column the given a table</P> -<P>[( - column name, - column type, - column length, - nullable column, - default value -)]</P> -<P> -<H2><A NAME="_primary_key table">_primary_key TABLE</A></H2> -<P>This function implements a Oracle-native primary key column -information.</P> -<P>Return a list of all column name defined as primary key -for the given table.</P> -<P> -<H2><A NAME="_unique_key table">_unique_key TABLE</A></H2> -<P>This function implements a Oracle-native unique key column -information.</P> -<P>Return a list of all column name defined as unique key -for the given table.</P> -<P> -<H2><A NAME="_foreign_key table">_foreign_key TABLE</A></H2> -<P>This function implements a Oracle-native foreign key reference -information.</P> -<P>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.</P> -<P>The foreign key name is composed as follow:</P> -<PRE> - 'local_table_name->remote_table_name'</PRE> -<P>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:</P> -<PRE> - @{$link{$fkey_name}{local}} = @local_columns; - @{$link{$fkey_name}{remote}} = @remote_columns;</PRE> -<P> -<H2><A NAME="_get_users">_get_users</A></H2> -<P>This function implements a Oracle-native users information.</P> -<P>Return a hash of all users as an array.</P> -<P> -<H2><A NAME="_get_roles">_get_roles</A></H2> -<P>This function implements a Oracle-native roles -information.</P> -<P>Return a hash of all groups (roles) as an array of associated users.</P> -<P> -<H2><A NAME="_get_all_grants">_get_all_grants</A></H2> -<P>This function implements a Oracle-native user privilege -information.</P> -<P>Return a hash of all tables grants as an array of associated users.</P> -<P> -<H2><A NAME="_get_indexes table">_get_indexes TABLE</A></H2> -<P>This function implements a Oracle-native indexes information.</P> -<P>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.</P> -<P> -<H2><A NAME="_get_sequences">_get_sequences</A></H2> -<P>This function implements a Oracle-native sequences -information.</P> -<P>Return a hash of array of sequence name with MIN_VALUE, MAX_VALUE, -INCREMENT and LAST_NUMBER for the given table.</P> -<P> -<H2><A NAME="_get_views">_get_views</A></H2> -<P>This function implements a Oracle-native views information.</P> -<P>Return a hash of view name with the SQL query it is based on.</P> -<P> -<H2><A NAME="_alias_info">_alias_info</A></H2> -<P>This function implements a Oracle-native column information.</P> -<P>Return a list of array reference containing the following informations -for each alias of the given view</P> -<P>[( - column name, - column id -)]</P> -<P> -<H2><A NAME="_get_triggers">_get_triggers</A></H2> -<P>This function implements a Oracle-native triggers information.</P> -<P>Return an array of refarray of all triggers informations</P> -<P> -<H2><A NAME="_get_functions">_get_functions</A></H2> -<P>This function implements a Oracle-native functions information.</P> -<P>Return a hash of all function name with their PLSQL code</P> -<P> -<H2><A NAME="_get_packages">_get_packages</A></H2> -<P>This function implements a Oracle-native packages information.</P> -<P>Return a hash of all function name with their PLSQL code</P> -<P> -<H2><A NAME="_table_info">_table_info</A></H2> -<P>This function retrieve all Oracle-native tables information.</P> -<P>Return a handle to a DB query statement</P> -<P> -<HR> -<H1><A NAME="author">AUTHOR</A></H1> -<P>Gilles Darold <<A HREF="mailto:gilles@darold.net">gilles@darold.net</A>></P> -<P> -<HR> -<H1><A NAME="copyright">COPYRIGHT</A></H1> -<P>Copyright (c) 2001 Gilles Darold - All rights reserved.</P> -<P>This program is free software; you can redistribute it and/or modify it under -the same terms as Perl itself.</P> -<P> -<HR> -<H1><A NAME="bugs">BUGS</A></H1> -<P>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.</P> -<P> -<HR> -<H1><A NAME="see also">SEE ALSO</A></H1> -<P><EM>DBI</EM>, <A HREF="/DBD/Oracle.html">the DBD::Oracle manpage</A>, <A HREF="/DBD/Pg.html">the DBD::Pg manpage</A></P> -<P> -<HR> -<H1><A NAME="acknowledgements">ACKNOWLEDGEMENTS</A></H1> -<P>Thanks to Jason Servetar who decided me to implement data extraction.</P> - -</BODY> - -</HTML> |