Help Center/ GaussDB(DWS)/ Tool Guide/ DSC/ Using DSC/ Database Schema Conversion/ Migration Parameters
Updated on 2024-12-09 GMT+08:00
View PDF
Share

Migration Parameters

Parameter Description

Table 1 Parameters

Long

Short

Data Type

Description

Value Range

Default Value

Example

--source-db

-S

String

Source database
  • Teradata
  • MySQL

N/A

--source-db Teradata(or)

-S Teradata

--input-folder

-I

String

Input folder containing Teradata or Oracle scripts

N/A

N/A

--input-folder /home/testmigration/Documentation/input

(or)

-I /home/testmigration/Documentation/input

--output-folder

-O

String

Output folder where the migrated scripts are saved

N/A

N/A

--output-folder /home/testmigration/Documentation/output(or)-O /home/testmigration/Documentation/output

--application-lang

-A

String

Application language parser used for migration

SQL: Migrate SQL schemas or scripts in SQL files.

Perl: Migrate BTEQ or SQL_LANG scripts in Perl files.
  • SQL
  • Perl

SQL

--application-lang Perl

or

-A Perl

--conversion-type

-M

String

Migration type. Set this parameter based on input scripts.

Bulk: Migrate DML and DDL scripts.

BLogic: Migrate service logic, such as procedures and functions.

BLogic is used only for Oracle PL/SQL.
  • Bulk
  • BLogic

Bulk

--conversion-type ddl

or

-M ddl

--log-folder

-L

String

Log file Path

N/A

N/A

--log-folder /home/testmigration/Documentation(or)-L /home/testmigration/Documentation

--version-number

-VN

String

Oracle specified parameter

Oracle

N/A

--version-number

or

-V1R8_330

--target-db

-T

String

Target database
  • gaussdbA

gaussdbA

--target-db gaussdbA (or)

-T gaussdbA

Usage Guideline

It is mandatory to specify the source database, input folder path, and output folder path, and optional to specify the migration type and log path.

If a user does not specify the logging path, then the tool creates the log folder in the TOOL_HOME path and saves all the logs in this log folder.

Examples

./runDSC.sh --source-db Teradata --input-folder opt/DSC/DSC/input/oracle/ --output-folder /opt/DSC/DSC/output/ --log-folder /opt/DSC/DSC/log/ --application-lang SQL --conversion-type ddl --targetdb gaussdbA

System Response

********************** Schema Conversion Started *************************
DSC process start time : Mon Jan 20 17:24:49 IST 2020
Statement count progress 100% completed [FILE(1/1)]

Schema Conversion Progress 100% completed
************************************************************************** 
Total number of files in input folder : 1
************************************************************************** 
Log file path :....../DSC/DSC/log/dsc.log
DSC process end time : Mon Jan 20 17:24:49 IST 2020
DSC total process time : 0 seconds
********************* Schema Conversion Completed ************************

If there is no sql file present in the input folder, then the following message is displayed in console:

Environment Creation and Restoration Procedure (database and database user)

Creating a GaussDB(DWS) database and schema

  1. Log in to postgres: 

    gsql -p <port> -d postgres 
drop database <database name>;
create database <database name>;
\c <database name>
GRANT ALL PRIVILEGES ON DATABASE <database name> TO <user>;
grant database to <user>;\q
gsql -p <port> -d <database name> -U <user> -W <password> -h <IP> -f
drop database <database name>;
create database <database name>;
\c <database name>;
GRANT ALL PRIVILEGES ON DATABASE <database name> TO <user>;
gsql -p <port> -d <database name> -U <user> -W <password>  -f

  2. Run all files in setup.

Commands:

sh runDSC.sh -S oracle -M blogic -I <input path> 
sh runDSC.sh -I input/ -S oracle -M ddl -L log_temp -P input/bulk/1_table/