The Oracle Grid Infrastructure software owner (typically, grid) must be a member of the OSDBA group. Membership in the OSDBA group enables access to the files managed by Oracle ASM. If you have a separate OSDBA group for Oracle ASM, then the Oracle Restart software owner must be a member of the OSDBA group for each database and the OSDBA group for Oracle ASM.
If grid user is not a member of dba os group, then DBCA will fails at end of database creation and DBCA will perform rollback of database creation (database will not be created).
The error below will be raised:
srvctl start database -d prdcdb PRCR-1079 : Failed to start resource ora.prdcdb.db ORA-01017: invalid username/password; logon denied CRS-5017: The resource action "ora.prdcdb.db start" encountered the following error: ORA-01017: invalid username/password; logon denied . For details refer to "(:CLSN00107:)" in "/u01/app/grid/diag/crs/db-oracle/crs/ trace/ohasd_oraagent_grid.trc".
To fix the issue you must add user “grid” to OSDBA group “dba” and relink RDBMS Binaries.
# id grid uid=205(grid) gid=202(oinstall) groups=208(asmdba),209(asmadmin),210(asmoper) # usermod -a -G dba grid (linux) # id grid uid=205(grid) gid=202(oinstall) groups=203(dba),208(asmdba),209(asmadmin), 210(asmoper) # su - oracle oracle@db-oracle:/home/oracle> export AIXTHREAD_SCOPE=S oracle@db-oracle:/home/oracle> export ORACLE_BASE=/u01/app/oracle oracle@db-oracle:/home/oracle> export ORACLE_HOME=$ORACLE_BASE/product/12.1.0/ dbhome_12102 oracle@db-oracle:/home/oracle> export PATH=$ORACLE_HOME/bin:$PATH oracle@db-oracle:/home/oracle> relink all writing relink log to: /u01/app/oracle/product/12.1.0/dbhome_12102/ install/relink.log
If there are no errors reported in $ORACLE_HOME/install/relink.log, then retry to create the database with dbca.
I recommend that DBA be aware of this feature, because this feature will really bring a HUGE difference in performance matter to our databases.
Note: This feature is available starting with Oracle Database 12c Release 1 (126.96.36.199).
Good to Know
- Is a Option of Oracle Enterprise Edition (188.8.131.52 and above). - Additional license required
- It is Not in Memory Database - it's an accelerator to our current database
- It is Not Column Store Database - it allows keeping some of our data in column store which is non-persistent
- It has nothing to do with Oracle Times-Ten or Oracle Coherence
- No additional hardware requirement, except additional OS RAM available
Price: Buy it
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