Sunday, March 14, 2021

The database is down. Please specify the host credentials to access database restart and diagnostics tools

The database is down. Please specify the host credentials to access database restart and diagnostics tools.

Enterprise manager shows that database is down but in real it is not.

[oracle@grhldb01 trace]$ sqldba


SQL*Plus: Release 11.2.0.3.0 Production on Fri Sep 13 10:38:01 2013


Copyright (c) 1982, 2011, Oracle.  All rights reserved.


Connected to:

Oracle Database 11g Enterprise Edition Release 11.2.0.3.0 - 64bit Production

With the Partitioning, Automatic Storage Management, OLAP, Data Mining

and Real Application Testing options


SQL> select name,open_mode from v$database;


NAME    OPEN_MODE

------------

TCHDB   READ WRITE

check the listener status.


[oracle@grhldb01 ~]$ lsnrctl status


LSNRCTL for Linux: Version 11.2.0.3.0 - Production on 26-AUG-2014 13:16:23


Copyright (c) 1991, 2011, Oracle.  All rights reserved.


Connecting to (ADDRESS=(PROTOCOL=tcp)(HOST=)(PORT=1521))

STATUS of the LISTENER

------------------------

Alias                     LISTENER

Version                   TNSLSNR for Linux: Version 11.2.0.3.0 - Production

Start Date                13-MAR-2014 12:53:12

Uptime                    165 days 23 hr. 23 min. 10 sec

Trace Level               off

Security                  ON: Local OS Authentication

SNMP                      ON

Listener Parameter File   /orabin/grid11gR2/grid/network/admin/listener.ora

Listener Log File         /orabin/grid11gR2/base/diag/tnslsnr/grhldb01/listener/alert/log.xml

Listening Endpoints Summary...

  (DESCRIPTION=(ADDRESS=(PROTOCOL=ipc)(KEY=LISTENER)))

  (DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=127.0.0.1)(PORT=1521)))

  (DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=10.128.0.42)(PORT=1521)))

Services Summary...

Service "+ASM" has 1 instance(s).

  Instance "+ASM1", status READY, has 1 handler(s) for this service...

Service "TCHDB" has 2 instance(s).

  Instance "TCHDB1", status READY, has 2 handler(s) for this service...

  Instance "TCHDB2", status READY, has 1 handler(s) for this service...

Service "TCHDB1_RAC" has 1 instance(s).

  Instance "TCHDB2", status READY, has 1 handler(s) for this service...

Service "TCHDB2_RAC" has 1 instance(s).

  Instance "TCHDB2", status READY, has 1 handler(s) for this service...

Service "TCHDBXDB" has 2 instance(s).

  Instance "TCHDB1", status READY, has 1 handler(s) for this service...

  Instance "TCHDB2", status READY, has 1 handler(s) for this service...

Service "TCH_ESP_ORANGE_02_RAC" has 2 instance(s).

  Instance "TCHDB1", status READY, has 2 handler(s) for this service...

  Instance "TCHDB2", status READY, has 1 handler(s) for this service...

Service "TCH_GBR_VODA_02_RAC" has 1 instance(s).

  Instance "TCHDB2", status READY, has 1 handler(s) for this service...

Service "TCH_GBR_VODA_RAC" has 1 instance(s).

  Instance "TCHDB2", status READY, has 1 handler(s) for this service...

The command completed successfully


it’s runing.


Solution:

select username, account_status from dba_users order by 2;

shows that

DBSNMP EXPIRED

SYSMAN EXPIRED

SYSTEM EXPIRED.


if they are locked then simple unlock with commands:

alter user DBSNMP account unlock;

alter user SYSTEM account unlock;

alter user SYSMAN account unlock;

it’s all, now enjoy with enterprise manager


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