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TNS:could not resolve the connect identifier specified
Backtrace message unwound by exceptions
invalid identifier
PL/SQL compilation error
internal error
missing expression
table or view does not exist
end-of-file on communication channel
TNS:listener unknown in connect descriptor
insufficient privileges
PL/SQL: numeric or value error string
TNS:protocol adapter error
ORACLE not available
target host or object does not exist
invalid number
unable to allocate string bytes of shared memory
resource busy and acquire with NOWAIT specified
error occurred at recursive SQL level string
ORACLE initialization or shutdown in progress
archiver error. Connect internal only, until freed
snapshot too old
unable to extend temp segment by string in tablespace
Credential retrieval failed
missing or invalid option
invalid username/password; logon denied
unable to create INITIAL extent for segment
out of process memory when trying to allocate string bytes
shared memory realm does not exist
cannot insert NULL
TNS:unable to connect to destination
remote database not found ora-02019
exception encountered: core dump
inconsistent datatypes
no data found
TNS:operation timed out
PL/SQL: could not find program
existing state of packages has been discarded
maximum number of processes exceeded
error signaled in parallel query server
ORACLE instance terminated. Disconnection forced
TNS:packet writer failure
see ORA-12699
missing right parenthesis
name is already used by an existing object
cannot identify/lock data file
invalid file operation
quoted string not properly terminated

Restoring 64 bit database to 32 bit Server

Jared Still



  Source server:  64 bit RedHat ES 4
  Target server :  32 bit RedHat ES4

Oracle: - 64 bit on the 64 bit server - 32 bit on the 32 bit server.

What I am trying to do is restore an Oracle database from 64 bit server to a 32 bit server.

The assumption is that the source database is 64 bit, it has died, and took its storage with it. 

The database has been backed up with RMAN, there is no RMAN repository,
and autobackup of controlfiles is turned on.

The only server available to do a restore is a 32 bit RH server.

The database files for 32 bit and 64 bit Oracle are the same.
The PL/SQL must be recompiled, but that has nothing to do with restoring the database.

The control files are however, different - they must be recreated when
migrating from 32-bit -> 64 bit.
( see http://download-west.oracle.com/docs/cd/B19306_01/relnotes.102/b15666/toc.htm#CHDGAJDG)

This is making it somewhat difficult to restore the database.

The controlfile can easily be restored to the 64 bit server, but not the 32 bit server.
Following are the results of attempting to do so:

SQL> get restore_0905_ctlfile.sql
  1  -- This procedure will restore the control file as text
  2  declare
  3     devtype varchar2(256);
  4     done boolean;
  5  begin
  6     devtype := dbms_backup_restore.deviceallocate(type=>'sbt_tape');
  7     dbms_backup_restore.restoresetdatafile;
  8     dbms_backup_restore.restorespfileto('/u01/app/oracle/product/9.2.0/9ir2dev/dbs/spfilets01.ora');
  9     dbms_backup_restore.restorebackuppiece('c-2182868868-20060905-01', DONE=>done);
 10     dbms_backup_restore.devicedeallocate;
 11* end;
 12  /
-- This procedure will restore the control file as text
ERROR at line 1:
ORA-19624: operation failed, retry possible
ORA-19507: failed to retrieve sequential file,
handle="c-2182868868-20060905-01", parms=""
ORA-27029: skgfrtrv: sbtrestore returned error
ORA-19511: Error received from media manager layer, error text:
Backup file <c-2182868868-20060905-01> not found in NetBackup catalog
ORA-07202: sltln: invalid parameter to sltln.
ORA-06512: at "SYS.X$DBMS_BACKUP_RESTORE ", line 1371
ORA-06512: at line 9

The file does exist, as I restored it to a 64 bit server.

The problem is that the datafiles cannot be restored without the controlfile.
A new controlfile cannot be created without the datafiles.

An interesting catch-22, no?

At this point, I am ready to try building a database with the identical datafiles, and then attempt the restore over the new files.
( I know what the datafiles are due to job that runs periodically that backs up the controfile
  to trace - I restored the file manually from backups via NetBackup)

Any thoughts on another way to do this restore?


Jared Still
Certifiable Oracle DBA and Part Time Perl Evangelist