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Turn on the tracing of listener and re-execute the operation. Then see the error message in listener.log
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Turn on the tracing of listener and re-execute the operation. Then see the error message in listener.log

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Error: &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;ORA-12532 / TNS-12532 <br />
Text: &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;TNS:invalid argument <br />
&nbsp;--------------------------<wbr />----------<wbr />----------<wbr />----------<wbr />----------<wbr />--------- <br />
Cause: &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;An internal function received an invalid parameter. &nbsp;Action: &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<br />
Not normally visible to the user. For further details, turn on tracing &nbsp; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<br />
and reexecute the operation. <br />

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Error:      ORA-12532 / TNS-12532
Text:      TNS:invalid argument
 ---------------------------------------------------------------------------
Cause:      An internal function received an invalid parameter.  Action:      
Not normally visible to the user. For further details, turn on tracing        
and reexecute the operation.


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This one was puzzling. &nbsp;I could connect from the client with SQL*plus. &nbsp;Forms wouldn't connect. &nbsp;I removed all Oracle products and reinstalled. &nbsp;Same problem. &nbsp;I discovered that the user had installed McAfee Firewall. The Oracle Forms Runtime came up like it wanted to access the Internet. The user was paranoid and BLOCKED all access to the Forms Runtime module. &nbsp;I changed the access to PERMIT and problem solved.<br />
<br />
Thanks for your help.
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This one was puzzling.  I could connect from the client with SQL*plus.  Forms wouldn't connect.  I removed all Oracle products and reinstalled.  Same problem.  I discovered that the user had installed McAfee Firewall. The Oracle Forms Runtime came up like it wanted to access the Internet. The user was paranoid and BLOCKED all access to the Forms Runtime module.  I changed the access to PERMIT and problem solved.

Thanks for your help.

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What are the possible problem/solutions for this error?
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What are the possible problem/solutions for this error?

ORA-12532 TNS: INVALID ARGUMENT

Oracle is an object-relational database management system. It supports a large number of languages and application development frameworks. Its primary languages are SQL, PL/SQL and Java, but it also includes support for C and C++. Oracle also has its own enterprise modules and application server software.