After installing Migration Toolkit, and specifying connection properties for the source and target databases in the toolkit.properties file, Migration Toolkit is ready to perform migrations.The Migration Toolkit executable is named runMTK.sh on Linux systems and runMTK.bat on Windows systems. On a Linux system, the executable is located in:Note: If the following error appears upon invoking the Migration Toolkit, check the file permissions of the toolkit.properties file.MTK-11015: The connection credentials file ../etc/toolkit.properties is not secure and accessible to group/others users. This file containsThe operating system user account running the Migration Toolkit must be the owner of the toolkit.properties file with a minimum of read permission on the file. In addition, there must be no permissions of any kind for group and other users. The following is an example of the recommended file permissions where user enterprisedb is running the Migration Toolkit.However, the Migration Toolkit does not support importation of NULL character values (embedded binary zeros 0x00) with the JDBC connection protocol. If you are importing data that includes the NULL character, use the –replaceNullChar option to replace the NULL character with a single, non-NULL, replacement character.Once the data has been migrated, use a SQL statement to replace the character specified by –replaceNullChar with binary zeros.