Grant Semantic Model Access

Ensure that the OAX$OAC user can access each of the database objects that you plan to merge.

Grant access to the OAX$OAC user to each object using this SQL:
```
GRANT SELECT ON "CUSTOM_SCHEMA"."MY_TABLE" TO "OAX$OAC";
```
If you plan to merge views that reference multiple schemas, use the WITH GRANT OPTION as follows:
```
GRANT SELECT ON "CUSTOM_SCHEMA"."MY_VIEW" TO "OAX$OAC" WITH GRANT
          OPTION;
```

Optional: Grant view access to OAX_USER using this SQL:

GRANT SELECT ON "CUSTOM_SCHEMA"."MY_TABLE" TO "OAX_USER";