These steps are for recovery in which we will know about how to recover from a loss of a non-system tablespace on the same location while the database is closed. Normally our database is always in open mode. In some cases we can face error ORA-01157: cannot identify/lock data file %s – see DBWR trace file” […]
Monthly Archives: September 2017
Recover from a loss of a non-system tablespace on the same location while the database is open
We are going to have a look on the steps which are followed by DBA to recover a loss of a non-system tablespace on the same location while the database is open. When we lose a non-system tablespace you cannot access and query only objects that were created on their datafiles Meanwhile users can continue to […]
Recover from a loss of a temporary tablespace
This article is about a recovery of temporary tablespace. As we know that Temporary tablespaces are used to manage space for database sort operations and for storing global temporary tables. For example, if you join two large tables, and Oracle cannot do the sort in memory (see SORT_AREA_SIZE initialization parameter), space will be allocated in […]
Oracle Bare Metal Cloud Services
Oracle Corp. today announced the general availability of its new Bare Metal Cloud Services, which the company is billing as the next generation of its Infrastructure-as-a-Service (IaaS). The new IaaS product provides a “bare metal” cloud — servers with no Oracle software running on them — in a virtualized network environment that delivers high performance Database-as-a-Service […]
Recover from a loss of a read-only tablespace
Being an Oracle DBA we are aware that there are many types of backups are available for Oracle database maintenance in the same way we have multiple ways to restore our database. One question raises here that why do we need have a different kind of ways to backup and recovery in Oracle database? Answer of this question […]
MAX_STRING_SIZE Parameter In Oracle 12c
This parameter was introduced in Oracle 12c. MAX_STRING_SIZE controls the maximum size of string size in Oracle database. Either we can set it to STANDARD or.EXTENDED The default value is STANDARD MAX_STRING_SIZE = STANDARD means the maximum size of strings is 4000 bytes for VARCHAR2 and NVARCHAR2 MAX_STRING_SIZE = EXTENDED means maximum size can be upto 32767 byte . We can change the value of MAX_STRING_SIZE from STANDARD to EXTENDED. But not from EXTENDED to STANDARD. With MAX_STRING_SIZE set to STANDARD , […]
Restore lost non-system datafiles on a different location while the database is closed
With the help of this article today we are going to learn about those steps which are going to use during the restore lost non-system datafiles on different location the database is closed. In our previous post, we have discussed the restore lost non–system datafiles on a different location while the database while the database is open. We […]
Restore a lost non-system datafile on a different location while the database is open
We are going to have a look on those steps which are required to restore a lost nonsystem datafile on a different location during the Oracle a database is in open stage. We are going to lose datafiles of a non-system critical tablespace and restore them, while the database is open, to a location other […]
Oracle Cloud (DBaaS): Using dbaascli Utility for Switchover & Failover Operations on Oracle Data Guard
This article was written by Skant Gupta and Joel Perez in Oracle OTN. At the last part of this article we performed Switchover, Failover & Reinstate Operations on Oracle Data Guard using the DBCS Console. You can read it here: Oracle Cloud (DBaaS): Switchover, Failover & Reinstate Operations on Oracle Data Guard using DBCS Console […]
Switchback to the original location of the previously corrupted/damaged datafile
In this article, we are going to have look on How to switch back to the original location of the previously corrupted/damaged/lost/canceled datafile. RMAN> report schema; using target database control file instead of recovery catalog Report of database schema for database with db_unique_name ORCL List of Permanent Datafiles =========================== File Size(MB) Tablespace RB segs Datafile Name […]