diff --git a/cache/cache_profiles.go b/cache/cache_profiles.go
index 2d09aa4..e227779 100644
--- a/cache/cache_profiles.go
+++ b/cache/cache_profiles.go
@@ -40,7 +40,9 @@ func (c *Cache) deleteProfile(data map[string]string) {
     _, ok1 := c.Profiles[data["profile_name"]]
     if !ok1 {
         fmt.Println("Profile deleted")
+        Database.Unlock()
         Database.Db.MustExec(Database.Db.Rebind("DELETE FROM urt_profiles WHERE name=?"), data["profile_name"])
+        Database.Lock()
     } else {
         fmt.Println("Something goes wrong! Profile is still here!")
     }
@@ -75,6 +77,7 @@ func (c *Cache) FlushProfiles(data map[string]string) {
         }
     }
 
+    Database.Unlock()
     tx := Database.Db.MustBegin()
     fmt.Println("Adding new profiles...")
     for _, profile := range new_profiles {
@@ -85,6 +88,7 @@ func (c *Cache) FlushProfiles(data map[string]string) {
         tx.NamedExec("UPDATE urt_profiles SET name=:name, version=:version, binary=:binary, second_x_session=:second_x_session, additional_parameters=:additional_parameters WHERE name=:name", &profile)
     }
     tx.Commit()
+    Database.Lock()
     fmt.Println("Done")
 }
 
diff --git a/cache/cache_servers.go b/cache/cache_servers.go
index 1c022a7..954bbb8 100644
--- a/cache/cache_servers.go
+++ b/cache/cache_servers.go
@@ -85,6 +85,7 @@ func (c *Cache) FlushServers(data map[string]string) {
         }
     }
 
+    Database.Unlock()
     tx := Database.Db.MustBegin()
     fmt.Println("Adding new servers...")
     if len(new_servers) > 0 {
@@ -101,6 +102,7 @@ func (c *Cache) FlushServers(data map[string]string) {
     }
 
     tx.Commit()
+    Database.Lock()
     fmt.Println("Done")
 }
 
diff --git a/database/database_object.go b/database/database_object.go
index bb9e0a3..466064d 100644
--- a/database/database_object.go
+++ b/database/database_object.go
@@ -14,6 +14,7 @@ import (
     //"database/sql"
     "fmt"
     "path"
+    "runtime"
     "strconv"
 
     // local
@@ -48,10 +49,12 @@ func (d *Database) Close() {
     tx.Commit()
 
     d.Db.Close()
+    runtime.UnlockOSThread()
 }
 
 func (d *Database) Initialize(cfg *configuration.Config) {
     fmt.Println("Initializing database...")
+    runtime.LockOSThread()
 
     // Connect to database.
     db_path := path.Join(cfg.TEMP["DATA"], "database.sqlite3")
@@ -72,6 +75,10 @@ func (d *Database) Initialize(cfg *configuration.Config) {
     }
 }
 
+func (d *Database) Lock() {
+    runtime.LockOSThread()
+}
+
 func (d *Database) Migrate() {
     // Getting current database version.
     dbver := 0
@@ -87,3 +94,7 @@ func (d *Database) Migrate() {
 
     migrate_full(d, dbver)
 }
+
+func (d *Database) Unlock() {
+    runtime.UnlockOSThread()
+}
diff --git a/urtrator.go b/urtrator.go
index 0b0fd13..b0f1d36 100644
--- a/urtrator.go
+++ b/urtrator.go
@@ -25,7 +25,6 @@ func main() {
 
     numCPUs := runtime.NumCPU()
     runtime.GOMAXPROCS(numCPUs)
-    runtime.LockOSThread()
 
     ctx := context.New()
     ctx.Initialize()