Dbca database error: ORA-19504 ORA-12547 ORA-15001 ORA-15055, dbcaora-19504

Dbca database error: ORA-19504 ORA-12547 ORA-15001 ORA-15055, dbcaora-19504

[Problem]

This error was found on Baidu, and the content of the entire TM was actually depressing. Later, I opened Google,

Error time: When [asm, 1] ASM installation + oracle Installation and installation are used for the second time, an error is reported,In step 11of11 of dbca database creation, click finish and an error will be reported after installation to around 11%.

The error message is as follows:

ORA-19504: failed to create file "+ DG" ORA-15001: diskgroup "+ DG" does not exist or is not mountedORA-15055: unable to connect to ASM instanceORA-12547: TNS: lost contact


[Solution] at this time, the asm instance is started and the disk group is mounted. Modify the following permissions:
[Grid @ asmnode bin] $ cd $ GRID_HOME/bin
[Grid @ asmnode bin] $ chmod 6751 oracle


[Oracle @ asmnode bin] $ cd $ ORACLE_HOME/bin
[Oracle @ asmnode bin] $ chmod 6751 oracle


Ls-l oracle
-Rwsr-s -- x 1 grid oinstall 152400480 Nov 24 oracle


After modification, reinstall and pass.