ORA-12638: Credential retrieval failed
Posted on April 28th, 2010 in Ora Error ORA-12638: Credential retrieval failed
Today while I am going to startup my database , I found the following error
SQL> startup
ORA-12638: Credential retrieval failed
I have edited the sqlnet.ora file and modified the same as follows
Before – SQLNET.AUTHENTICATION_SERVICES= (NTS)
After – SQLNET.AUTHENTICATION_SERVICES= (NONE)
After modification , I perform the following operation to bring the database open
SQL> shutdown immediate;
ORA-01507: database not mounted
ORACLE instance shut down.
SQL> startup
ORACLE instance started.
Total System Global Area 612368384 bytes
Fixed Size 1250452 bytes
Variable Size 192940908 bytes
Database Buffers 415236096 bytes
Redo Buffers 2940928 bytes
Database mounted.
Database opened.
SQL>
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