We have x6-2 Exadata machine. When trying to create a single-instance database on one of the database nodes on Exadata system by using DBCA it throws :

ORA-02249 – missing or invalid value for MAXLOGMEMBERS.

For testing, I can create  RAC database without any issue.
My steps are:

1) Start DBCA
2) Select Create Single Instance DB
3) Select OLTP database, 2×2
4) Provide the required values to create the database
5) database creation fails with ORA-02249 – missing or invalid value for MAXLOGMEMBERS.

After made search at metalink, I found this is bug 10403920 .

You need to use the Custom database or General Purpose choose instead. After choose Custum database, DBCA has been ended without any issue.

Reference:
DBCA Errors with ORA-02249 When Creating Single-instance Database On Exadata (Doc ID 1456161.1)

 

 

 

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