Restore A Database Into A Server With Fewer Memory?
May 12, 2013
I'm running Oracle 11.2g enterprise and we have a database on a server. We want to take a backup from this database and restore it in another database with fewer memory. In restore procedure after edition of pfile I try to restore controlfiles with my edited pfile(initdb.ora), but i'm getting an error related to memory shortage. So i decreased the amount of *.memory_target(3.5G to 2.5G) and the restore procedure continued. At the end when i try to Open database(alter database open resetlogs) i got the following error and the database does not work normally.
RMAN> alter database open resetlogs
database opened
RMAN-06900: WARNING: unable to generate V$RMAN_STATUS or V$RMAN_OUTPUT row
RMAN-06901: WARNING: disabling update of the V$RMAN_STATUS and V$RMAN_OUTPUT row
s
ORACLE error from target database:
ORA-06553: Please-801: internal error [56319]
ORA-00604:error occurred at recursive sql level 1.
Can i know the internal process of initialization of DB into memory in timesten , when a new connection is establishing? Will timesten create tables and indexes in RAM when first connection is established if the RAM policy is default?
want to know the internal functional flow of timesten when any command is fired against it.
NAME TYPE VALUE ------------------------------------ ----------- ------------------------------ lock_sga boolean FALSE pre_page_sga boolean FALSE sga_max_size big integer 3G sga_target big integer 2G
from what I read I beleive this will initially grab 2GB of memory on startup and will grab up to to 3GB of memory total for the SGA. The "total" memory can be allocated to different peices of the SGA when needed but will never exceed 3GB. Is this correct or would these settings infringe on any available memory on a system that is already tight on memory?
Secondly, what happens if both these values are set to the same value?
The controlfiles were corrupted due to some issue. So, I had to restore the recent backed up control file and then restore the database.
The weird thing which I have noticed is that. I tried backing up Yesterday's Control file. So, I would say that the backup pieces it should pick should be from yesterday. however, the backup pieces are getting restored from last week's backup.
I create a test database which is duplicate of my production server and after every 15 or 20 days I need to synchronize test db with production db.So I clone it and it takes about a day.I have to remove all datafiles from test and move from production to there on test server and I applied restore and recover.So it is very time consuming process.
I want to know is there any process which makes my work less like I just need to apply all rest of the logs which are new after synchronize last time from production server that need restore and recover.
We have a database server running oracle 12G on linux which is the production then we have a DR using the same version of DB and linux, I want to restore from tape into the DR from the production backup. the UNIX admin has restored already from tape the rman backup, i would like to know what are the steps to restore the backup from tape, also the DR database server was created identical like production using the same spfile etc.
were do i copy restored file into on the DR server? also then in RMAN do i just start the DR database and run the command restore database? what else do i need?
I have taken cold back-up of a complete database using below rcv from a server.
RMAN> connect target / run{ set command id to 'bkp_EMCPROD_db'; allocate channel c1 type 'sbt_tape' parms="BLKSIZE=1048576, ENV=(TDPO_OPTFILE=/opt/tivoli/tsm/client/oracle/bin/tdpo.opt)"; backup current controlfile format 'ct_t%t_T%T_d%d_s%s.ctl'; backup database format 'db_t%t_T%T_d%d_s%s_p%p.db'; backup current controlfile format 'ct_t%t_T%T_d%d_s%s.ctl'; release channel c1; }
I need to restore this back-up on another server of the same Database Name. Below is the rcv which my sr. dba asked me to look into for the restore.
/* From the new server to restore the back-up */ RMAN> connect target "rman/xxxxx@emcprod" connect auxiliary / run { set until time "to_date('Nov 03 2011 19:00:00','Mon DD YYYY HH24:MI:SS')"; allocate auxiliary channel c1 type 'sbt_tape' parms="ENV=(TDPO_OPTFILE=/opt/tivoli/tsm/client/oracle/bin64/tdpo.sacsun8.opt)"; restore database; }
i am continuously inserting data to oracle database after some time like 2 hours oracle disconnects,it creates erros like
ERROR: ORA-01034: ORACLE not available ORA-27101: shared memory realm does not exist Process ID: 0 Session ID: 0 Serial number: 0
after restarting the database with shutdown immediate ans startup if i start inserting records it will show erros like
ORA-01653: unable to extend table SYSTEM.GLT_PROT_TRAFFIC_SUM_VOIP by 8192 in tablespace GLCOMM
but i have created the Tablespace with BigFile Auto Extend and max size unlimited, i am having 400GB disk space created Redo logs with 15gb,i have tried serveral times reinstalling the oracle but problem is not solved.
same problem is happenging with small datafiles also,
operating system: windows server 2008 R2 standard oracle server : 11g oracle client : 64 bit
I have a 11.2.0.3 database runing on AIX. The instance hangs and crashes due to memory usage issues. I checked the alert log of the database and this is what i see:
WARNING: Heavy swapping observed on system in last 5 mins.pct of memory swapped in [11.85%] pct of memory swapped out [3.45%]. make sure there is no memory pressure and the SGA and PGA are configured correctly. Look at DBRM trace file for more details.i also see the following in the alert.log:
Errors in file /opt/oracle/diag/rdbms/iut3px1/iut3px1/trace/iut3px1_cjq0_55312404.trc: ORA-00604: error occurred at recursive SQL level 2 ORA-04031: unable to allocate 3896 bytes of shared memory ("shared pool","select audit$,options from p...","sga heap(1,0)","kglsim object batch")
The file contents of iut3px1_cjq0_55312404.trc are:
==================== Process State Object ==================== ---------------------------------------- SO: 0x70000007b97de70, type: 2, owner: 0x0, flag: INIT/-/-/0x00 if: 0x3 c: 0x3 proc=0x70000007b97de70, name=process, file=ksu.h LINE:12616 ID:, pg=0
I have two Solaris 5.11 x86 64 bit servers. I need to be able to copy the backup files to a temp location on the 2nd server and restore that server so it is a test version of the first server. There is no RMAN catalog, I simply want to backup on A move to B restore from files copied to b.
On the first server installed Oracle Enterprise 11.2.0.3. sid = orcl. i created one schema with a new table space added a table and inserted 500,000 rows.
i set the db to archivelog=on, set configure controlfile autobackup on
i then did RMAN backup as backupset database spfile;
on the second server, i installed Oracle Enterprise 11.2.03, sid=orcl exactly like i did on the first server.i scp'd all of the files created by the backup to one location on the test server. i renamed spfileorcl.ora in dbs to somethinge else. startup nomount, exit and go to rman and run this:
DUPLICATE DATABASE TO 'orcl' SPFILE BACKUP LOCATION '/tmp/backups' NOFILENAMECHECK;
this runs for a while and looks like it works but eventually fails with :
RMAN-05541: no archived logs found in target database
subsequent attempts to 'startup' the database receive the error ORA-19838: Cannot use this control file to open database.
This is very frustrating. I have gone over all of the manuals, documentation and more but there is no 'step by step' process that i can find that is current with my version of Oracle that documents the steps necessary to simply backup a db, move it to a test server to a disk and then restore that test server as a copy of the first server.
1) While connecting to the database as sysdba (sqlplus "/as sysdba"), it takes about 12 to 15 seconds what things I need to check/change so that connection will be faster?
2) Also, I have read somewhere that changing the sga/memory parameters connecting to the database. is it true?
3) This is not concerned with above 2 questions. What should be the memory parameters size for a 8 gb database?
What I have is:
Total System Global Area 1068937216 bytes Fixed Size 2182592 bytes Variable Size 1027605056 bytes Database Buffers 33554432 bytes Redo Buffers 5595136 bytes
I am running 10g on Linux, and last week someone messed up a database and it needs to be restored to 27 December. I am not a DBA, out regular DBA is on vacation till mid January,
I know we have archivelog on (I can see .arc files for the database), and I also have a backup of the actual data files and control files from when the database was first created. So in other words, I have all archive files and the initial data files. What i do not know is how to set the restore till December 27.
I've got a database I need to restore from a cold backup, but I don't have a copy of the multiplexed members of the redo groups - each group has 2 members, and we've only got a backup of the first.
I know this won't stop the database from starting, and I can recreate them, but for ease can you copy and rename a redo log file from a multiplexed copy to correct location like you can with a control file?
We have Oracle 10.2.0.3 database installed on Itanium server.
1. One day we found some packages got invalid & not compiling at all with error – ORA-00600: internal error code, arguments: [4097], [], [], [], [], [], [], [].
2. Then we successfully restored the database from old RMAN backup of previous date that caused this error.
3. After 2 days again we found the same error in alert_prd log - ORA-00600: internal error code, arguments: [ORA-00600: internal error code, arguments: [4097], [], [], [], [], [], [], [] ORA-06512: at "SYS.DBMS_STATS", line 19089 ], [], [], [], [], [], [], []
4. Then for testing we exported database using exp command & found 3 tables are not exporting because of data block corruption issue.
5. Then we truncated the data from all 3 tables and then able to export successfully.
6. After all this we manually run SYS.DMS_STATS job but found same error logged in prd_alert log.
This looks like, still database block corruption issue is there & we are unable to cure it 100% This is a production system & in very critical state now.
We have 11gR2 2 node RAC on Linux. ASM and OMF is used for database. The database on it is backed up using RMAN. We want to test the RMAN backup by restoring it to a new database on same server.
i was worked on oracle 11g.1, oracle data miner 11.1.0.4, sql developer 3.
unfortunately, after finishing my tables and models ,the hard disk damaged and was replaced with other.the oracle setup was not on system partition,it was on D:/ and i had windows backup for C, D partition. i restored oracle partition D which contains old oracle files and i installed oracle again but on partition F.
I have a question regarding memory parameters in oracle database 9.2.0.8, especially sga_max_size and db_cache_size. Database server has 32G of ram. Oracle parameter on server shmmax is set to 16G. Is reasonable to set sga_max_size to the same value, and db_cache_size to 80% of that size?
We want to keep the Guaranteed restore point for week but unfortunately we don't have enough flash space in the server. Is it possible to backup the flashback log(restore point logs) through rman and send bkp file to tape? how to restore the database in new server until Guaranteed restore point.
I have 2 server install oracle : server 1 and server 2
server 1 run database DB01
i use rman backup DB01 ( this command : BACKUP FULL DATABASE PLUS ARCHIVELOG DELETE INPUT; ) and move ( The database backup pieces , Controlfile backup piece, The parameter file i.e init.ora file) to server 2 .
At server 2 :
After start database with init.ora file and restore controlfile error :
RMAN-03002: failure of restore command at 07/22/2011 02:56:04 RMAN-06172: no AUTOBACKUP found or specified handle is not a valid copy or piece
Can we restore a database if we have only the datafiles available? The database has been dropped but we have just the datafiles with NO system, sysaux,users and undo datafiles that were saved after taking the database offline and then dropping the database. I know this is strange but if possible, I want to see if we can retrieve some of the data from those datafiles to another database. BTW, There is no backup available for this database except the dbf files on OS.
I have a task which is to get an export of an account.Easy, you will say, use Data Pump but I have not the database only a complete RMAN backup of it (including control file and spfile). Easy once again, restore the database and export but I have not the space to restore the complete database.
all segments of the account are in a couple of tablespaces I know the name (and I know I have space enough to restore them).
Unfortunately, I don't know the other tablespace names (but of course SYSTEM and SYSAUX), in particular I don't know the name of the undo tablespace and, of course, I have no connection with the source database and no way to know these tablespace names.
So here's the question, how can I restore part of the database (SYSTEM, SYSAUX, undo tablespace and a couple of other ones) from a complete backup without knowing the name of the undo tablespace and of the tablespaces I don't need?
We have a 2 database identical ( Say DB1 & DB2). In that, one of the database(DB2) base got corrupted. We cant recover back the database due to hard disk problem. So we did a new installation of database and patched to current level.
Now I want make DB2 up and running. So I though of generating a script from DB1 and run it in DB2 to restore back.
