ORA-12537 / ORA-12547 or TNS-12518 if Listener (including SCAN Listener) and Database are Owned by Different OS User
(Doc ID 1069517.1)
Last updated on DECEMBER 25, 2024
Applies to:
Gen 1 Exadata Cloud at Customer (Oracle Exadata Database Cloud Machine) - Version N/A and laterOracle Cloud Infrastructure - Database Service - Version N/A and later
Oracle Database Exadata Express Cloud Service - Version N/A and later
Oracle Database Backup Service - Version N/A and later
Oracle Database Cloud Exadata Service - Version N/A and later
Information in this document applies to any platform.
Symptoms
In environment where listener home (including SCAN listener which resides in GRID Infrastructure/ASM home) and database home are owned by different OS user, ORA-12537 could happen when connecting through listener, when creating database through DBCA, or when installing database software and creating a database in runInstaller. Job Role Separation is a typical example as SCAN and local grid home listener is owned differently than database.
- Error detail
12537, 00000, "TNS:connection closed"
// *Cause: "End of file" condition has been reached; partner has disconnected.
// *Action: None needed; this is an information message.
Before the error is reported, connection could hang for a while, and a core file may also be generated.
- Screen output:
SQL> conn system/xxx@<HOSTNAME>
ERROR:
ORA-12537: TNS:connection closed
OR
PRCR-1079 : Failed to start resource ora.<DB_NAME>.db
CRS-5011: Check of resource <DB_NAME> failed: details at ..
CRS-2674: Start of ora.<DB_NAME>.db on <HOSTNAME> failed
ORA-12546: TNS:permission denied
- listener_scann.log or listener.log
TNS-12518: TNS:listener could not hand off client connection
TNS-12546: TNS:permission denied
TNS-12560: TNS:protocol adapter error
TNS-00516: Permission denied
Linux Error: 13: Permission denied
OR
TNS-12518: TNS:listener could not hand off client connection
TNS-12547: TNS:lost contact
TNS-12560: TNS:protocol adapter error
TNS-00517: Lost contact
Linux Error: 32: Broken pipe
- runInstaller error if installing
INFO: Starting Output Reader Threads for process <GI_HOME>/bin/kfod
INFO: Parsing KFOD-00300: OCI error [-1] [OCI error] [ORA-12547: TNS:lost contact
INFO: Parsing ] [12547]
INFO: Parsing
INFO: The process <GI_HOME>/bin/kfod exited with code 1
..
SEVERE: [FATAL] [INS-30502] No ASM disk group found.
CAUSE: There were no disk groups managed by the ASM instance +ASM1.
Cause
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In this Document
| Symptoms |
| Cause |
| Solution |
| References |