Help Center/ Cloud Bastion Host/ FAQs/ Troubleshooting/ SSO O&M Faults/ Error Message "ORA-12637_Packet Receive Failed" Reported While Connecting to Oracle Databases
Updated on 2025-09-04 GMT+08:00
View PDF

Error Message "ORA-12637_Packet Receive Failed" Reported While Connecting to Oracle Databases

Symptoms

After the bastion host is upgraded to 3.3.26.0, error message "ORA-12637_Packet Receive Failed" was reported while connecting to Oracle databases with PL/SQL clients.

Possible Causes

The configuration file oci.dll is missing.

Solution

  1. Download the oci.dll file. The number of oci bits depends on the number of PL/SQL bits.
  2. Decompress the downloaded package and verify that the oci.dll file is in the decompressed directory.
  3. Configure the oci.dll file in PL/SQL Developer. The configuration takes effect only after the program is closed.

    Figure 1 Configuration file

Parent topic: SSO O&M Faults