The following SQL Code can be used to display the rowcount for all (Orale BI Applications) tables:
select table_name,
to_number(extractvalue(xmltype
(dbms_xmlgen.getxml('select count(*) c from '||table_name))
,'/ROWSET/ROW/C')) count
from user_tables
order by table_name;
for further reference, check here.
Download the Oracle Pre-Built Database Developer VMs from OTN.
Import the extracted VM into Virtual Box and bootup the Virtual Machine. After starting the VM, the following screen is presented witin Virtual Box:
check the Linux Version of the Downloaded Virtual Machine with below command:
# uname -r
For this VM it is: 4.1.12-61.1.27.el7uek.x86_64, thus: Oracle Enterprise Linux 7.
Afterwards, switch user to root (Password is “oracle”) and navigate to the yum Repository configuration:
using the vi (i command for – – inserting- – Mode and Esc for exiting the insert Mode, save with :wq) update the following sections within the repo file:
[ol7_latest]
enabled=1
[ol7_addons]
enabled=1
[ol7_optional_latest]
enabled=1
e.g.:
Install R with the following command 
this automatically downloads and performs the installation:
Add the Oracle Home Lib to the Library Path environment variable:
This can also be added to the ~/.bashrc 
As next step, download the Oracle R Enterprise software from OTN. 
And store to a installation directory e.g. /u01/ORE_Inst_Dir 
and unzip the files:
Start the installation by running the installer:
Unzip the Client zip files:
switch to root user and install all unzipped files:
Start Oracle R Client with the ORE command and load the Oracle R libaries with library(ORE). When loading the R libaries, the following error is thrown:
Loading required package: OREembed
Error in dyn.load(file, DLLpath = DLLpath, …) :
unable to load shared object ‘/u01/app/oracle/product/12.1.0.2/db_1/R/library/png/libs/png.so’:
libpng12.so.0: cannot open shared object file: No such file or directory
Error: package ‘OREembed’ could not be loaded
Since, the file libpng12.so.0 is not available it needs to be installed: 
[Thanks to the following article which features the same issue]
After installing the missing file, the ORE Libaries are loaded successfully within R:
Further references:
http://rajiv-kuriakose.blogspot.de/2016/03/how-to-install-oracle-r-enterprise-on.html
Official Oracle Documentation:
https://docs.oracle.com/cd/E57012_01/doc.141/e57007/install_oreserver.htm#BGBJIIAG
In case the oracle Database should be used by Oracle BI, the database connectivity must be configured after the installation using the Oracle Database driver and TNS Names configuration.
On the Server (where Oracle BI EE 12 is installed), the Installation routine of Oracle BI automatically ship’s a Instant Client Version of the Oracle Database Client (Database driver).
The files of the driver are located within the following directory:
/u01/apps/obi12c/product/Oracle_Home/instantclient
| On Linux/Unix | On Windows | Description |
| libclntsh.so.10.1 | oci.dll | Client code library |
| libociei.so | oraociei10.dll | OCI Instant Client data shared library |
| libnnz10.so | orannzsbb10.dll | Security library |
The TNS Names configuration that should be used by the Oracle BI Server has to be specified by the sqlnet.ora and tnsnames.ora which need to be placed within the following directory:
/opt/biee/user_projects/domains/bi/config/fmwconfig/bienv/core
The following shows a example of the sqlnet.ora file:
And the following shows a example of the tnsnames.ora fiile:
Using above files the Oracle BI server should be able to connect to the database specified within the TNS Names file.
The Oracle BI 12c Administration Tool (BI Developer Studio) requires the above (example) configuration files for sqlnet.ora and tnsnames.ora to be placed within the following directory of the client developer machine:
C:\Oracle\BIAdmin\domains\bi\config\fmwconfig\bienv\core
The TNS Name specified within the tnsnames.ora may then be used within the Connection Pool definition of the Oracle BI Metadata either by using the defined name or by using the fully qualified TNS Names entry. When refreshing the count of a database object such as a Table, the Oracle BI Server should then be able to retrieve the row count and display the row count within the Oracle BI Administration Tool:
In case of bug fixing, the log of the Oracle BI Administration Tool is located within the following path:
C:\Oracle\OracleBIClient\domains\bi\servers\obis1\logs
