ASM Filter driver (ASMFD) is the replacement for ASMLIB but since there are not many good guides out there on how to use, a common approach is installing an old version of the kernel and keep using ASMLIB…. this is not great as introduces bugs/problems having and old version. The goal of this page is... » read more
A couple of days ago we had this issue where all the DB instances on one server of a RAC were failing with this error: Checking alert log it was like if a rogue process was still using memory segments: But nothing was in use: After a failed attempt with an Oracle SR, we noticed... » read more
We had this error after a what it seems a successfull rman active duplication to another server. DB mounts ok, but when we try to open, alert log gets flooded with these errors (and db is not usable). After scratching my head thinking there was some issue with the disks, (as fdisk -l was listing... » read more
This is an easy one: I have been requested to show how Application could make use of Oracle Wallets instead of hard copying user password on the code, so here is it: 1:- Create a user on target DB: 2:- Create WALLET on App server, this case we will use directory /u01/admin/orcl/wallet: 3:- Update tnsnames.ora... » read more
You have a standby DB out of sync and all logs on primary are gone. At this stage you have 2 options: 1:- rebuild standby 2:- Rollforward standby What about a “one line” command that does automatically all the steps you usually do on a rollforward? Here is the magic: After this, you just need... » read more
While recreating an standby DB from an active primary RAC DB, rman might fail with these errors: This is not an actual issue on the standby side, but instead a RMAN config on primary. Since primary is a RAC DB, snapshot control file needs to be located on a shared location, so lets change to:... » read more
We are trying to create a DB on a new RAC enviroment in silent mode like: But DBCA was failing with: In this case, we have a separate role for GRID (as oragrid user) and RDBMS (as oracle user), so we checked: 1:- ASM disks are under the right group name (asmadmin this case): 2:-... » read more
This is an easy one. This is the error/warning you might while connecting to RMAN: The way to fix it is running this: And error gone! Post Views: 872
We are going to install Windows 2012R2 Standard Edition in VirtualBox as part of creating a Oracle Windows Cluster. We want to have 3 server: 1 Controller + 2 Database servers: Server Name Public IP: Private IP: win-rac1 192.168.56.151 192.168.10.151 win-rac2 192.168.56.152 192.168.10.152 win-rac-control 192.168.56.153 192.168.10.153 Here the steps to create WIN-RAC-CONTROL (the controller) on... » read more
On this post we are going to upgrade Oracle 12c to 19c on an ACTIVE/PASSIVE setup on Windows Failover Cluster Manager: Server Name DBNAME 12c Oracle Home 19c Oracle Home win-rac1 DBPROD C:\oracle\app\product\12.1.0\dbhome_1 C:\oracle\app\product\19c\dbhome_1 win-rac2 DBPROD C:\oracle\app\product\12.1.0\dbhome_1 C:\oracle\app\product\19c\dbhome_1 This is the current patch level of both 12c and 19c homes (on both nodes!): Its worth... » read more