error 14 (SQLITE_CANTOPEN) when open database after do several "SELECT" command

[asbs-eng]

i use esp32 (arduino) after several select command (read_data())

int read_data() {
sqlite3 *db1;
int rc = sqlite3_open("/sd/test.db", &db1);

if (rc) {
Serial.print("Can't open database (");
Serial.print(String(rc));
Serial.print(") : ");
Serial.println(sqlite3_errmsg(db1));
}
else {
sqlite3_stmt *stmt;
String sql = "SELECT * FROM tbl_data WHERE tgl>'2024-07-31 08:08:21' AND counter>450 ORDER BY tgl DESC , counter DESC;";

int rcrc = sqlite3_prepare_v2(db1,sql.c_str(),-1,&stmt,NULL); 
if (rcrc != SQLITE_OK) {
  Serial.println("Error Fetch Data");
}

const char * dt_id;
const char * dt_tgl;
int    dt_cnt;

if (sqlite3_step(stmt) != SQLITE_ROW) {      
  sqlite3_close(db1);   
  sqlite3_finalize(stmt);      
  
} else {

  while (sqlite3_step(stmt) == SQLITE_ROW) {    
    dt_id   = (const char *) sqlite3_column_text(stmt,0);
    dt_tgl  = (const char *) sqlite3_column_text(stmt,1);
    dt_cnt  = sqlite3_column_int(stmt,2);
    Serial.print(dt_id);
    Serial.print("  ");
    Serial.print(dt_tgl);
    Serial.print("  ");
    Serial.print(dt_cnt);
    Serial.println("  ");
  }
  sqlite3_close(db1);   
  sqlite3_finalize(stmt);
}

}
return rc;
}

i have error 14 (SQLITE_CANTOPEN) unable to open database file
int rc = sqlite3_open("/sd/test.db", &db1);
where i get rc = 14

[siara-cc]

@asbs-eng

1. I think sqlite3_close() should be executed after sqlite3_finalize()
2. Why open the database everytime for running SQL? It can be kept open while executing prepared statements on it?

[asbs-eng]

yes you right i add sqlite3_reset() before sqlite3_finalize() and now it run perfectly , i think it because memory issue so after do select statement i clear memory.
i open database everytime for running SQL because there are more than 1 database each for different user and the code above is just a concise example for the entire program.
In this way, I think the problem has been resolved, thank you