Question: I am not able to run the
sqlplus command as Oracle. I get the following errors:
$
sqlplus
SP2-1503: Unable to initialize Oracle call interface
SP2-0152: ORACLE may not be functioning properly
What causes
the SP-1503 and SP-0152 errors?
Answer: The oerr utility shows this for the
SP-0152 error:
SP2-0152 ORACLE may not be functioning properly
Cause: Unable to initialize a session to the Oracle
instance.
Action: Make a note of the message and the number,
then contact the Database Administrator.
This is the salient error, the SP-1503 error:
SP2-1503: Unable to initialize Oracle call
interface
Cause: Indicates a library used by
SQL*Plus to communicate with the database failed to initialize
correctly.
Action: Check that the Oracle
environment or registry entries are consistent and correct. If using
the SQL*Plus Instant Client make sure the SQL*Plus and Oracle
libraries are from the same release. Make sure you have read access
to the libraries.
As we see, we need to verify the the environmental parameters are
set correctly (LD_LIBRARY_PATH, ORACLE_HOME, ORACLE_SID), and verify
that the Oracle service and the Oracle listener processes are
running.
In Windows, you should see an oracle.exe
process from the Windows server. In UNIX/Linux, you will see
the standard background processing running (PMON, SMON, &c).
Before you try accessing Oracle from a client, try accessing Oracle
from the server itself. You can invoke sqlplus directly from
the machine where Oracle resides.
Then, you can look at accessing sql*Plus from a SQL*Net client.
Carefully follow these
steps to diagnosing network connectivity errors.
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