UTL_CALL_STACK Oracle Database 12C release 1 (12.1)

New package UTL_CALL_STACK is added in Oracle 12C. The package gives more control for format display of call stack, error stack and error backtrace.

CALL STACK – it’s showing call stack from where it was started to where the call stack was examined. In previous release DBMS_UTILITY.FORMAT_CALL_STACK could be used to display it in constant format.

ERROR STACK – it shows full oracle error chain.  In previous release DBMS_UTILITY.FORMAT_ERROR_STACK could be used to display it in constant format.

ERROR BACKTRACE – The backtrace is a trace from where the exception was thrown to where the backtrace was examined. In previous release DBMS_UTILITY.FORMAT_ERROR_BACKTRACE could be used to display it in constant format.

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Install and configure Apex 5.0.X embedded PL/SQL

This article presents how to install and configure Apex for version 5.0.X for Oracle 11G

Prepare software to installation

Download installation package from Oracle site and unzip.

Download apex_5.0.X.zip to directory /tmp and unzip it from

cd /tmp
unzip <downloaded software>

After unzip is completed a new directory will be created /tmp/apex so go to this directory and log into database as SYSDBA. Always use SYSDBA account for running all scripts.

cd /tmp/apex
sqlplus / as sysdba

Pre-installation steps

It’s recommended to do backup of the database and disable the Oracle XMLDB HTTP server by setting the HTTP port to 0.


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