plex/README.md

PLEX - PL/SQL Export Utilities

• BackApp - main method
• Add_Query - helper method
• Queries_to_CSV - main method
• View_runtime_log - helper method

Some hints:

• All main functions (see list above) returning a zip file with the resulting files as a blob
• All main functions using dbms_application_info to set the current module and action for the session
• We use the APEX_ZIP package - therefore we need to have at a minimum APEX 5.0 installed
• To be usable in the SQL and PL/SQL context all boolean parameters are coded as varchars. We check only the uppercased first character:
  • 1 (one), Y [ES], T [RUE] will be parsed as TRUE
  • 0 (zero), N [O], F [ALSE] will be parsed as FALSE
  • If we can't find a match the default for the parameter is used
  • This means the following keywords are also correct ;-)
    • yes please
    • no thanks
    • yeah
    • nope
    • Yippie Yippie Yeah Yippie Yeah
    • time goes by... - that is true, right?
  • All that fun because Oracle does not support boolean values in pure SQL context...

Feedback is welcome

BackApp

Get a zip file for an APEX application (or the current user/schema only) including:

• The app export SQL file - full and splitted ready to use for version control
• All objects and grants DDL
• Optional the data in csv files - useful for small applications in cloud environments for a logical backup
• Everything in a (hopefully) nice directory structure

EXAMPLE

SELECT plex.backapp(p_app_id => 100) FROM dual;

SIGNATURE

FUNCTION backapp (
  p_app_id                   IN NUMBER   DEFAULT NULL, -- If not provided we simply skip the APEX app export.
  p_app_public_reports       IN VARCHAR2 DEFAULT 'Y',  -- Include public reports in your application export.
  p_app_private_reports      IN VARCHAR2 DEFAULT 'N',  -- Include private reports in your application export.
  p_app_report_subscriptions IN VARCHAR2 DEFAULT 'N',  -- Include IRt or IG subscription settings in your application export.
  p_app_translations         IN VARCHAR2 DEFAULT 'Y',  -- Include translations in your application export.
  p_app_subscriptions        IN VARCHAR2 DEFAULT 'Y',  -- Include component subscriptions.
  p_app_original_ids         IN VARCHAR2 DEFAULT 'N',  -- Include original workspace id, application id and component ids.
  p_app_packaged_app_mapping IN VARCHAR2 DEFAULT 'N',  -- Include mapping between the application and packaged application if it exists.

  p_include_object_ddl       IN VARCHAR2 DEFAULT 'Y',  -- Include DDL of current user/schema and its objects.
  p_object_prefix            IN VARCHAR2 DEFAULT NULL, -- Filter the schema objects with the provided object prefix.

  p_include_data             IN VARCHAR2 DEFAULT 'N',  -- Include CSV data of each table.
  p_data_as_of_minutes_ago   IN NUMBER   DEFAULT 0,    -- Read consistent data with the resulting timestamp(SCN).
  p_data_max_rows            IN NUMBER   DEFAULT 1000, -- Maximal number of rows per table.
  p_data_table_regex_filter  IN VARCHAR2 DEFAULT NULL, -- Filter user_tables with the given regular expression.

  p_include_runtime_log      IN VARCHAR2 DEFAULT 'Y'   -- Generate plex_backapp_log.md in the root of the zip file.
) RETURN BLOB;

Add_Query

Add a query to be processed by the method queries_to_csv. You can add as many queries as you like.

EXAMPLE

BEGIN
  plex.add_query(
    p_query       => 'select * from user_tables',
    p_file_name   => 'user_tables'
  );
END;
/

SIGNATURE

PROCEDURE add_query (
  p_query     IN VARCHAR2,               -- The query itself
  p_file_name IN VARCHAR2,               -- File name like 'Path/to/your/file-name-without-extension'.
  p_max_rows  IN NUMBER   DEFAULT 100000 -- The maximum number of rows to be included in your file.
);

Queries_to_CSV

Export one or more queries as CSV data within a zip file.

EXAMPLE

DECLARE
  l_zip blob;
BEGIN

  --fill the queries array
  plex.add_query(
    p_query       => 'select * from user_tables',
    p_file_name   => 'user_tables'
  );
  plex.add_query(
    p_query       => 'select * from user_tab_columns',
    p_file_name   => 'user_tab_columns',
    p_max_rows    => 10000
  );

  -- process the queries
  l_zip := plex.queries_to_csv;

  -- do something with the zip file...

END;
/

SIGNATURE

FUNCTION queries_to_csv (
  p_delimiter           IN VARCHAR2 DEFAULT ',',  -- The column delimiter - there is also plex.tab as a helper function.
  p_quote_mark          IN VARCHAR2 DEFAULT '"',  -- Used when the data contains the delimiter character.
  p_line_terminator     IN VARCHAR2 DEFAULT lf,   -- Default is line feed (plex.lf) - there are also plex.crlf and plex.cr as helpers.
  p_header_prefix       IN VARCHAR2 DEFAULT NULL, -- Prefix the header line with this text.
  p_include_runtime_log IN VARCHAR2 DEFAULT 'Y'   -- Generate plex_queries_to_csv_log.md in the root of the zip file.
) RETURN BLOB;

View Runtime Log

View the log from the last plex run. The internal array for the runtime log is cleared after each call of BackApp or Queries_to_CSV.

EXAMPLE

SELECT * FROM TABLE(plex.view_runtime_log);

SIGNATURE

FUNCTION view_runtime_log RETURN tab_runtime_log
  PIPELINED;