Solution : https://service.sap.com/sap/support/notes/954896 (SAP Service marketplace login required)
Summary :
After upgrading to Oracle 10.2.0.2 on AIX 5L, users face issues connecting to sqlplus as "/ as sysdba" displaying "ORA-12547: TNS:lost contact". Analysis through 'truss' shows potential process creation failures. This issue, replicable in Oracle versions post-9.2.0.6 on HP TRU64, stems from an unmounted /proc filesystem. The remedy involves mounting the /proc filesystem to restore functionality, resolving the connection issues seen with the Oracle DBMS under specified configurations. This ensures continuity in DBMS operations and system administration by re-enabling crucial database access commands.
Key words :
lost contactns secondary err code, lost contactnt secondary err code, 12560nt main err code, 32nt os err code, 0sql net tracing shows, lost contacta truss shows, terms ora-12547 tns-12547 sqlplus 10, 2 oracle aix tru64 reason, create subject process, /proc file system
Related Notes :
| 505630 | Composite SAP Note ORA-12547 |