Notes for database links to other Databases:
Only one wallet file is valid per directory for use with database links. You can only upload one
cwallet.ssoat a time to the directory you choose for wallet files (for example DBLINK_WALLET_DIR). This means with a
cwallet.ssoin DBLINK_WALLET_DIR you can only create database links to the databases for which the wallet in that directory is valid. To use multiple
cwallet.ssofiles with database links you need to create additional directories and put each
cwallet.ssoin a different directory. When you create database links with
DBMS_CLOUD_ADMIN.CREATE_DATABASE_LINK, specify the directory that contains the wallet with the
See Create Directory in Autonomous Database for information on creating directories.
Supported target Oracle database versions for database links to another Oracle Database are: 19c, 18c, 12.2.0, 12.1.0, and 11.2.0.
Note:For complete information on supported versions, see Client Server Interoperability Support Matrix for Different Oracle Versions (Doc ID 207303.1)
Autonomous Database sets the
trueand this value cannot be changed. If your target database is not an Autonomous Database, then you must set the
trueon the target database.
To list the database links, use the
ALL_DB_LINKSview. See ALL_DB_LINKS for more information.