1. Cache Guide
  2. Setting Up a Caching Infrastructure
  3. Testing the Connectivity Between the TimesTen and Oracle Databases

Testing the Connectivity Between the TimesTen and Oracle Databases

If connectivity has been successfully established, the query returns the version of the Oracle database.

To test the connectivity between the TimesTen and Oracle databases, set the passthrough level to 3 and run the following query, to be processed on the Oracle database, as the TimesTen cache administration user:

Command> passthrough 3;
Command> SELECT * FROM V$VERSION;
Command> passthrough 0;

If it does not, check the following for correctness:

  • The Oracle net service name set in the OracleNetServiceName connection attribute and the state of the Oracle database server

  • The settings of the shared library search path environment variable such as LD_LIBRARY_PATH or SHLIB_PATH

  • The setting of the cache administration user name in the TimesTen database

You can retrieve the Oracle cache administration user name setting by calling the ttCacheUidGet built-in procedure as the TimesTen cache administration user: 

Command> call ttCacheUidGet;

In TimesTen Classic, the Oracle cache administration user name can also be returned from a command line by running a ttAdmin -cacheUidGet utility command as a TimesTen external user with the CACHE_MANAGER privilege: 

% ttAdmin -cacheUidGet cache1