Tag: srvctl

Database, Migration | Upgrades | Patching

OPatch Auto Failing to Apply Datapatch for a Removed Database

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Hi all,

So, just a few days ago, during a client support, crossed the following case.

A few database creations initially failed with DBCA due to other issues, but it seems the DBCA didn’t cleread all creation steps after the failure and theoretical rollback.

As a consequence, whenever running DBCA with GUI client was seeing an old database. When trying to remove it with DBCA, the removal fail as the database can’t be brought up (creation has failed, remember?). Ok, we can leave with it, right?

Yes until we reached the point where Opatchauto failed with the following:

Verifying SQL patch applicability on home /u01/app/oracle/product/19c/db

"/bin/sh -c 'cd /u01/app/oracle/product/19c/db; ORACLE_HOME=/u01/app/oracle/product/19c/db ORACLE_SID=DB1 /u01/app/oracle/product/19c/db/OPatch/datapatch -prereq -verbose'" command failed with errors. Please refer to logs for more details. SQL changes, if any, can be analyzed by manually retrying the same command.

The reason? See the complete log about the failing step:

Executing command as oracle: 
 /bin/sh -c 'cd /u01/app/oracle/product/19c/db;ORACLE_HOME=/u01/app/oracle/product/19c/db ORACLE_SID=DB1 /u01/app/oracle/product/19c/db/OPatch/datapatch -verbose'
2020-09-02 16:26:56,362 INFO  [438] com.oracle.glcm.patch.auto.db.product.executor.PatchingStepExecutor - COMMAND Looks like this: /bin/sh -c 'cd /u01/app/oracle/product/19c/db;ORACLE_HOME=/u01/app/oracle/product/19c/db ORACLE_SID=DB1 /u01/app/oracle/product/19c/db/OPatch/datapatch -verbose'
2020-09-02 16:26:57,662 INFO  [438] com.oracle.glcm.patch.auto.db.product.executor.GISystemCall - Is retry required=false
2020-09-02 16:26:57,662 INFO  [438] com.oracle.glcm.patch.auto.db.product.executor.PatchingStepExecutor - status: 1
2020-09-02 16:26:57,662 INFO  [438] com.oracle.glcm.patch.auto.db.product.executor.PatchingStepExecutor - 
COMMAND EXECUTION FAILURE :
SQL Patching tool version 19.8.0.0.0 Production on Wed Sep  2 16:26:57 2020
Copyright (c) 2012, 2020, Oracle.  All rights reserved.

Log file for this invocation: /u01/app/oracle/base/cfgtoollogs/sqlpatch/sqlpatch_25218_2020_09_02_16_26_57/sqlpatch_invocation.log

Connecting to database...
Error: prereq checks failed!
Database connect failed with: ORA-01034: ORACLE not available
ORA-27101: shared memory realm does not exist
Linux-x86_64 Error: 2: No such file or directory
Additional information: 4376
Additional information: 1275019259 (DBD ERROR: OCISessionBegin)

Please refer to MOS Note 1609718.1 and/or the invocation log
/u01/app/oracle/base/cfgtoollogs/sqlpatch/sqlpatch_25218_2020_09_02_16_26_57/sqlpatch_invocation.log
for information on how to resolve the above errors.

SQL Patching tool complete on Wed Sep  2 16:26:57 2020

Clearly, the database is still in place.
As per MOS (ORA-01078 Can Not Delete Database From Dbca on Linux (Doc ID 1559634.1)) -> See the /etc/oratab!

Thing is, the doesn’t have the DB1 line. Also, all related files, logs directory structure, passwd, init, etc… all wiped out. What else?

Here is goes what seems Oracle forgot to tell:

[oracle@PRODB01 dbca]$ srvctl status database -d DB1
Database is not running.
[oracle@DMSDB1PA dbca]$ srvctl config database -d DB1
Database unique name: DB1
Database name: DB1
Oracle home: /u01/app/oracle/product/19c/db
Oracle user: oracle
Spfile: 
Password file: 
Domain: 
Start options: open
Stop options: immediate
Database role: PRIMARY
Management policy: AUTOMATIC
Disk Groups: DATA
Services: 
OSDBA group: oinstall
OSOPER group: 
Database instance: DB1
Ohhh, that took me a while to realize, this was a Standalone server. Once understood, the fix is straight forward:
[oracle@PRODB01 dbca]$ srvctl remove database -d DB1
Remove the database dms? (y/[n]) y
[oracle@PRODB01 dbca]$

I hope this can buy you some minutes of MOS, in case you are googling it first.
Or save you in case you gave up MOS already.

Cheers!

Database

Quick guide about SRVCTL

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Hi everyone!

Often we caught ourselves trying to remember some simple commands to achieve what we need. And SRVCTL and its variations may be one of them 🙂

Sometimes we need to create a specific service_name to connect to an existing database, and we can, for example, have an application that use a SPECIFIC NODE, so we can configure the service name to use it that way. And we find ourselves looking for the right syntax for that. Ok, we are going to give you guys some basic examples that may be helpful

In order to check ALL the available services already created via SRVCTL we should use:

srvctl status service -d

it should retrieve an output like that:

dbsrv {/home/oracle}: srvctl status service -d dbgrepora

Service grepora-app1 is running on instance(s) dbgrepora1

Please bear in mind that the does not necessarily match the instance name, so to make sure about the database name, run:

srvctl config database

Example:

dbsrv {/home/oracle}: srvctl config database

dbgrepora

If you have more than one database on that server, it will be returned too.

Ok, now let’s try to create a new service name for your database. In the node that you want to create the service_name, please run the following.

srvctl add service -d  -s

where follow the rule already described above, and you can create as you wish.

Ok GREPORA, but what if i want to create a service_name to multiple instances ? You got it!

The syntax follows the same idea, but we should include different parameter in there, which is:

-r

Example:

srvctl add service -d dbgrepora -s service_dbg -r dbgrepora1,dbgrepora2

Creating the service_dbg service, and checking the status, you’ll have an output like:

dbsrv {/home/oracle}: srvctl status service -d dbgrepora -s service_dbg

Service service_dbg is running on instance(s) dbgrepora1,dbgrepora2

To stop and remove a created service just use:

srvctl stop service -d  -s 
srvctl remove service -d  -s

 

Hope it comes to help!

Best Regards,

Rafael.

ASM, Database

How to Prevent Automatic Database Startup

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This is a quick post! 😀
– About Oracle Restart
– Reference to SRVCTL

Ok!
In a nutshell, my notes:

To register the database, if not already registered:
> srvctl add database -d $DBNAME -o $ORACLE_HOME -p $ORACLE_HOME/dbs/spfile.ora -y manual

Once the database is registered, change the management policy for the database to manual:
> srvctl modify database -d $DBNAME -y manual

Matheus.

Database, Enterprise Manager, Errors and Bugs

Service Detected on OEM but not in SRVCTL or SERVICE_NAMES Parameter?

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Okey, it happens.
To me, after a database moving from a cluster to another. The service was registered by SRVCTL in the old cluster but is not needed. So, was not registered in the new cluster.
But OEM insists to list, for example, the “service3” as offline. The problem is that you can not remove it by SRVCTL, because you had not registered, right? See the example below:

Listing services:
srvdatabase1:/home/oracle>srvctl status service -d systemdb
Service service1_systemdb is running on nodes: srvdatabase1
Service service2 is running on nodes: srvdatabase1
Service service2_systemdb is running on nodes: srvdatabase1

In the service_name parameter:
srvdatabase1:/home/oracle>sqlplus / as sysdba
SQL*Plus: Release 11.2.0.3.0 Production on Mon Jun 8 15:21:00 2015
Copyright (c) 1982, 2009, Oracle.  All rights reserved.
Connected to:
Oracle Database 11g Enterprise Edition Release 11.2.0.3.0 - 64bit Production
With the Partitioning, Real Application Clusters, Automatic Storage Management, OLAP,
Data Mining and Real Application Testing options
SQL> show parameters service;
NAME                                 TYPE
------------------------------------ --------------------------------
VALUE
------------------------------
service_names                        string
service2,test,systemdb

And the offline alarm goes to “service3“?
The easiest fix:

SQL> exec dbms_service.DELETE_SERVICE('service3');
PL/SQL procedure successfully completed.

Matheus.