1. Need to configure oracle oci client
First download the oracle client from the oracle official website
instantclient-basic-linux.x64-12.2.0.1.0
After downloading, unzip will be the following types of files
Then copy several files with so to /lib64 of the linux system where Dameng database is installed, and then create a soft connection:
ln -s libclntsh.so.12.1 libclntsh.so
The above steps are completed.
2. Log in to reach the dream database to create a dblink
Create a dblink in the DM management tool through the following statement
create or replace public link "TEST" connect 'oracle' with "QZ_S_ZHJG" identified by "123456" using '111.111.111.1/orcl';
TEST is the name of the created dblink, oracle is the database type to be linked, QZ_S_ZHJG is the user name of the linked database, 123456 is the password
111.111.111.1 is the ip address, and orcl is the example name.
So far dblink is created successfully
When testing, you can use the following statement to test
SELECT TOP 100 * FROM QZ_S_ZHJG.S_ENT@TEST