DBLink Connection Hangs or Fails with ORA-12152: TNS: Unable to send break
(Doc ID 2366424.1)
Last updated on JANUARY 18, 2025
Applies to:
Oracle Net Services - Version 10.1.0.2 to 12.1.0.2 [Release 10.1 to 12.1]Oracle Database - Enterprise Edition - Version 19.13.1.0.0 and later
Gen 1 Exadata Cloud at Customer (Oracle Exadata Database Cloud Machine) - Version N/A and later
Oracle Cloud Infrastructure - Exadata Cloud Service - Version N/A and later
Gen 2 Exadata Cloud at Customer - Version N/A and later
Information in this document applies to any platform.
Symptoms
DB link operation fails with following error:
==========================
SQL> create public database link ABCD.COM connect to xxxxx identified by "xxxxx" using 'ORCL';
Database link created.
SQL> select count(*) from Schema_name@ABCD.COM;
After very long time it throws back this error below
select count(*) from Schema_name@ABCD.COM
*
ERROR at line 1:
ORA-12152: TNS:unable to send break message
ORA-02063: preceding line from ORCL
Changes
No changes .
Cause
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In this Document
| Symptoms |
| Changes |
| Cause |
| Solution |
| References |