Wednesday, January 26, 2011

SP2-1503: Unable to initialize Oracle call interface

SP2-1503: Unable to initialize Oracle call interface

Have encoutered below error after upgrading database to 11GR2 (
when we try to connect to sqlplus below error Occuered.


SP2-1503: Unable to initialize Oracle call interface
SP2-0152: ORACLE may not be functioning properly

The issue is related to ORA_TZFILE env variable in 11GR2 this env variable is no longer needed.

  • In Oracle Database server to fix this issue Unset the env varaible ORA_TZFILE and try to connect.

  • In Oracle Applications Database to fix this issue Perform the below.

The ORA_TZFILE is set while at 11gR2 this should not be set.
The  $ORACLE_HOME/appsutil/template/ad8idbux.env is from the wrong version  (ad8idbux.env 120.8)
The wrong file includes the  following:
export  ORA_TZFILE

While for 11gr2 it should be:
if test "%s_database%" =  "db112" ;  then
export  ORA_TZFILE

Execute autoconfig in Database Node and source the environment variable.


  1. Got the SP2-1503 error today.
    Multiple oracle homes caused this for me on Windows server. 11g and 10g. The 11g installer set the path in the Windows environment. I removed the Oracle home bins from the path in the Windows environment and set the bin path in the path in the shells that I use - specific to the Oracle home that I am using.

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  2. Regards
    Sridevi Koduru (Senior Oracle Apps Trainer
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    Please Contact for One to One Online Training on Oracle Apps Technical, Financials, SCM, Oracle Manufacturing, OAF, ADF, SQL, PL/SQL, D2K at | +91 - 9581017828.