Duplicate database fail with RMAN-04014 ORA-01127: database name '/SIDDEVLOP' exceeds size limit of 8 characters

During cloning of Oracle DB using rman auxilary command got below error.

ERROR:
connected to auxiliary database (not started)
RMAN-00571: ===========================================================
RMAN-00569: =============== ERROR MESSAGE STACK FOLLOWS ===============
RMAN-00571: ===========================================================
RMAN-03002: failure of Duplicate Db command at 07/24/2015 01:43:21
RMAN-06403: could not obtain a fully authorized session
RMAN-04006: error from auxiliary database: ORA-01034: ORACLE not available
ORA-27101: shared memory realm does not exist
Linux-x86_64 Error: 2: No such file or directory
RMAN-03015: error occurred in stored script Memory Script
RMAN-04014: startup failed: ORA-01127: database name '/SIDDEVLOP' exceeds size limit of 8 characters
RMAN-04017: startup error description: ORA-32004: obsolete or deprecated parameter(s) specified for RDBMS instance

Solution:

Step1: Create text control file trace and edit as per requirement.

Step2: Edit init.ora with proper SID.

Step3: Startnomont,create controlfile and open database in resetlogs.

++ startup mount the db create text controlfile.

alter database backup controlfile to trace as '/tmp/controlSIDDEVLOP.txt';

edit initSIDDEVLOP.ora of db_name and db_unique_name

++Take out the block of 

 CREATE CONTROLFILE REUSE DATABASE "SIDDEVLOP" RESETLOGS NOARCHIVELOG

....

....

to 

CHARACTER SET WE8MSWIN1252

/

++ Edit the file as below.

 CREATE CONTROLFILE SET DATABASE "SIDDEVLOP" RESETLOGS NOARCHIVELOG

   MAXLOGFILES 192

     MAXLOGMEMBERS 3

     MAXDATAFILES 1024

     MAXINSTANCES 32

     MAXLOGHISTORY 5840

 LOGFILE

  GROUP 1 (

......

......

DATAFILE

  '+ASM_DATA01

....

....

CHARACTER SET WE8MSWIN1252

;

++ Now,Stop the DB and nomount the DB.

Then using above create controlfile command create the control file.

SQL>shut immediate

SQL> statup nomount

SQL> CREATE CONTROLFILE SET DATABASE "SIDDEVLOP" RESETLOGS NOARCHIVELOG

   MAXLOGFILES 192

     MAXLOGMEMBERS 3

     MAXDATAFILES 1024

     MAXINSTANCES 32

     MAXLOGHISTORY 5840

 LOGFILE

  GROUP 1 (

......

......

DATAFILE

  '+ASM_DATA01

....

....

CHARACTER SET WE8MSWIN1252

;

Control file created.

SQL>  alter database open resetlogs;

Database altered.

Ref: Manual Completion of a Failed RMAN Backup based Duplicate (Doc ID 360962.1)