Ora-01115, Ora-01110, Ora-15081 ORA-15186(alert.log) Error After Connecting To Database with non-oracle Unix User

If you are getting error Ora-01115, Ora-01110, Ora-15081 after you connected to a database with non-oracle user as below.

rep@mydb2:/home/rep/>sqlplus rep_odi/***

SQL*Plus: Release 11.2.0.2.0 Production on Mon Nov 21 17:01:10 2011

Copyright (c) 1982, 2010, Oracle. All rights reserved.

Connected to:
 Oracle Database 11g Enterprise Edition Release 11.2.0.2.0 - 64bit Production
 With the Partitioning, Real Application Clusters, Automatic Storage Management, OLAP,
 Data Mining and Real Application Testing options

SQL> select * from dba_indexes;
 select * from dba_indexes
 *
 ERROR at line 1:
 ORA-01115: IO error reading block from file (block # )
 ORA-01110: data file 1: '+DATA/mydb/datafile/system.272.743775337'
 ORA-15081: failed to submit an I/O operation to a disk

Further if you are seeing below lines in alert.log of database:

Mon Nov 21 17:23:23 2011
 Errors in file /u01/app/oracle/diag/rdbms/mydb/MYDB2/trace/MYDB2_ora_13518.trc:
 ORA-15186: ASMLIB error function = [asm_init], error = [18446744073709551611], mesg = [Driver not installed]
 ERROR: error ORA-15186 caught in ASM I/O path

The real cause is you are connecting with OS user which does not belong to OS dba, oper, asmadmin … etc group.

In order to succesfully do the operation, you must change the ownership of the OS user you are using or conenct to database over tns name, like below:

rep@mydb2:/home/rep/>sqlplus rep_odi/***@REP

SQL*Plus: Release 11.2.0.2.0 Production on Mon Nov 21 17:01:10 2011

Copyright (c) 1982, 2010, Oracle. All rights reserved.

Connected to:
 Oracle Database 11g Enterprise Edition Release 11.2.0.2.0 - 64bit Production
 With the Partitioning, Real Application Clusters, Automatic Storage Management, OLAP,
 Data Mining and Real Application Testing options

SQL> select * from dba_indexes;

SQL>…

Thanks to brilliant guy Hakan Dömbekçi for routing me to MOS Note.

Ora-01115, Ora-01110, Ora-15081 When Connecting DB with non-dba Group Users [ID 1372571.1]

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